JPH08205665A - Culm-transferring apparatus to thresher - Google Patents

Abstract

PURPOSE: To provide a culm-transferring apparatus enabling the smooth swing of culm-pressing levers from a manual state to an ordinary state and capable of smoothly supplying culms into a feeding chain. CONSTITUTION: Holding rails 11 for holding culms between rails are provided above a feeding chain 9 attached on a thresher 4. Culm-pressing levers 18, which are supported in a freely vertically swingable manner against the feeding chain 9, swing between a manual operational position in which the culm-pressing levers 18 take an uprising posture against the feeding chain 9 and an ordinary operational position in which the front ends of the culm-pressing levers 18 are fallen. While the both positions are being changed over, a terminal end of a culm-pressing lever 18 is made to contact a guiding lever 14 which is provided at the frontal end of the holding rails 11 to guide culms below the holding rails 11 at the manual operational position and made to come close to the holding rails 11. Further, the culm-pressing levers 18 are composed of a main lever 26 and a subsidiary lever 27 provided above the holding rails 11 at the ear tip-side of culms in such a manner as to hold the holding rails 11 between the levers 26 and 27 from right and left sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a grain culm conveying device for a threshing device equipped in a combine.

[0002]

2. Description of the Related Art Conventionally, a grain culm conveying device for conveying a harvested grain culm to a threshing device such as a combine harvester is installed above the front end of the feed chain as shown in JP-B-56-30182 or JP-B-60-40114. , A hand operation position for raising the grain stalk presser rod with respect to the feed chain,
It is known that the feed chain is provided so as to be switchable to a normal working position in which the front end is laid down.

[0003]

However, when the grain stalk presser rod is swung to the manual operation position, the guide portion formed by the grain stalk presser rod and the flap is discontinuous, and There is a problem that it is difficult to carry out the manual operation due to obstacles such as the tip of the slide rail in front of the eyes. In addition, the structure is complicated, such as the need for a return member, and there was no guide for the tip side of the harvested culm that was inherited by the feed chain, so the tip side of the culm stood up and the side surface inside the cutting rail. There was also a problem that the tips were caught.

[0004]

A grain culm conveying device for a threshing device according to the present invention for solving the above problems is a threshing device 4.
A feed chain 9 attached to the feed chain 9, a picking rail 11 provided above the feed chain 9 for holding a grain culm together with the feed chain 9, and a front end portion of the picking rail 11 can swing up and down with respect to the feed chain 11. And a grain stalk presser rod 18 supported by the
In the device for switching between a manual work position in which the feed chain 9 is erected and a normal work position in which the front end of the feed chain 9 is laid down, the slide rail 1 is provided.
1 In the state where the cutting rods 11 at the front end are provided with the guide rods 14 for guiding the grain culms at the upper part of the front end below the slide rails 11, and the grain holding rods 18 are erected in the handling positions. , The end of the grain stalk presser rod 18 is arranged to be close to the guide rod 14 side, and the grain stalk presser rod 1
8 and the guide rod 14 and the slide rail 11 are the feed chains 9
The first feature is that the mechanism is such that a continuous guide portion is formed.

Further, a feed chain 9 attached to the threshing device 4, and a slide rail 11 provided above the feed chain 9 for holding a grain culm together with the feed chain 9.
A grain stalk presser bar 18 supported at the front end of the sling rail 11 so as to be vertically swingable with respect to the feed chain 9, and a handle for raising the grain stalk presser bar 18 to the feed chain 9 In the device for switching between the working position and the normal working position in which the front end is laid down with respect to the feed chain 9, the sliding rail 11 has a front end and the sliding rail 11 in the handing work position has a grain culm at the upper end of the sliding rail 11. A guide rod 14 for guiding downward is provided, and the grain stick holding rod 18 and the guide rod 14 are formed so that the end portion of the grain stick holding rod 18 is slidably brought into contact with the side surface of the guide rod 14 when the working position is switched. This is the second feature.

Further, the grain rod pressing rod 18 is composed of a main rod 26 and an auxiliary rod 27 which are formed so as to sandwich the picking rail 11 from the left and right in a normal working position, and an auxiliary rod 27.
The third feature is that the is located above the grain culm tip side of the main rod 26.

[0007]

[Function] The grain squeeze bar 18 is raised in the hand position,
By bringing the end of the grain rod holding rod 18 close to the guide rod 14,
The grain rod retainer rod 18 is connected to the guide rod 14 that is smoothly connected to the slide rail 11, and the grain rod presser rod 18, the guide rod 14, and the slide rod 11 are continuously raised with respect to the feed chain 9. And the feed chain 9 forms a grain culm receiving path with a narrow frontage.

When the grain stalk presser bar 18 is swung from the manual handling position to the normal work position, the end of the grain stalk presser bar 18 operates while slidingly contacting the side surface of the guide rod 14, so that the grain stalk presser is pressed. The sliding rail 11 in which the rod 18 is inside the guide rod 14.
Grain-holding rod 18 at the normal working position without getting inside
Is located below the guide rod 14.

Further, since the grain rod pressing rod 18 sandwiches the slide rail 11 between the main rod 26 and the auxiliary rod 27 and the auxiliary rod 27 is located above the grain rod tip side of the main rod 26, the feed chain. The harvested grain culm that has been inherited by 9 is held by the feed chain 9 and the main rod 26 on the plant base side, and is conveyed to the threshing device 4 with the auxiliary rod 27 positioned above the tip side.

[0010]

FIG. 1 shows a combine to which the present invention is applied.
A pretreatment device 3 is provided in front of the body 2 supported by the traveling device 1.
However, a threshing device 4 is provided further behind. The pretreatment device 3 is composed of a raising device 6, a grain cutting device 7, a cutting grain conveying device 8 and the like.
The structure is such that the grain culm is caused by, the grain culm thus caused is cut by the grain culm cutting device 7, and the cut grain culm is conveyed backward by the cut grain culm conveying device 8. Then, the cut culm transported to the rear is taken over by the feed chain 9 attached to the threshing device 4, and is sent to the threshing device 4 to be threshed. The present invention relates to a portion where the feed chain 9 is inherited from the cutting culm transporting device 8.

The structure around the portion that is the front end of the feed chain 9 from the harvested grain culm conveying device 8 will be described in detail below with reference to FIGS. A sliding rail 11 is elastically urged by a spring 12 to a feed chain 9 formed of a chain with protrusions, and the threshing device 4 is provided in a state in which the feed chain 9 and the sliding rail 11 hold the harvested culm as a stock. The tip of the cut culm is supplied to the inside to perform the threshing process. The feed chain 9 is tilted to a slightly lower front than the grain culm holding action position B formed by the front end portion 11a of the picking rail 11 and the feed chain 9, and is inclined to the front lowering state, and the harvested grain culm transport device 8 is provided. A grain culm receiving feed chain portion 9a is formed so as to overlap with the rear end portion in a plan view.

The front end portion 11a of the flap rail 11 has a ship bottom-like shape in a side view, and is vertically swingable about a fulcrum shaft 10. A guide rod 14 having a substantially U shape in a side view is fixed diagonally upward so as to be continuous with the front end 11a at the front left side of the front end 11a. Further, a pressing guide 15 protruding leftward is fixed below the guide rod 14. On the other hand, a supporting member 16 is fixed to the front end portion of a rail base 11b supporting the slinging rail 11, and a grain stem pressing rod 18 is supported on the front end of the supporting member 16 as described later. The presser bar case 19 swings up and down with the rear upper end as a fulcrum to support the fulcrum shaft 1
It is pivotally supported via 7. The support member 16 also includes a spring mounting portion 16a below the fulcrum shaft 17.

The structure of the pressing rod case 19 will be described. The holding rod case 19 is provided with two support shafts 21a and 21b vertically slidable in the front and rear at predetermined intervals, and the front support shaft 21a is urged in the X direction by a spring 22. As shown in FIG. 2, when the holding rod case 19 is in a position substantially parallel to the slide rail 11, the springs 21a and 21b are substantially perpendicular to the slide rail 11. On the other hand, a handle 23 projects from a left side surface diagonally below and in front of the fulcrum shaft 17 of the presser bar case 19, and the right end of the handle 23 is at the right end of the presser bar case 19.
The spring attachment portion 24 is integrally fixed to the handle 23 while protruding to the right side of the. The spring mounting portion 24 is connected to the spring mounting portion 16a via a spring 25. The above handle 2
The structure 3 has a simple structure in which the spring mounting portion 24 and the handle 23, which require strength, are shared.

Further, the fulcrum shaft 1 on the left side surface of the pressing rod case 19
An engaging pin 20 is also provided at a front position and a lower position from 7, and the engaging pin 20 is located inside the guide rod 14. Here, the positional relationship between the engagement pin 20 and the guide rod 14 will be described in detail. In the state of FIG. 2, the engagement pin 20 and the guide rod 14
The lower surface of the upper end portion of the guide rod 14 is separated from the lower surface of the upper end portion of the guide rod 14 in the middle of the movement locus of the engaging pin 20 when the pressing rod case 19 swings upward about the fulcrum shaft 17. The positional relationship is such that they abut.

Next, the structure of the grain stick holding rod 18 will be described. The grain rod pressing rod 18 has a main rod 26 having a shape that follows the front shape of the feed chain 9 and its front end is curved upward, and the front end is fixed in the middle of the main rod 26. It is composed of an auxiliary rod 27 having a rear portion that is substantially parallel to the main rod 26 at a distance wider than the width of the flap rail 11 in a plan view above the culm tip side. The main rod 26
The end portion of is curved outward as described later.

From the main rod 26, mounting portions 26a, 26
In the state of FIG. 2, the mounting portion 26a is attached to the support shaft 21a, and the mounting portion 26b is attached to the support shaft so that the main rod 26 extends along the grain culm receiving feed chain portion 9a. 21b are respectively pivotally supported. Therefore, at the above position (the position shown in FIG. 2), the main rod 26 is urged by the spring 22 to the grain culm receiving feed chain portion 9a. Further, in this position, the main rod 26 and the auxiliary rod 27 sandwich the front end portion 11a of the slider rail 11 described above and are located below the holding guide 15 below the guide rod 14.
The end portion of the main rod 26 is curved so that the inner side surface of the end portion is located on the extension line of the left side surface of the guide rod 14 described above.

The pressing rod case 19 having the above-mentioned structure
By vertically swinging about the fulcrum shaft 17, the front end of the grain stick holding rod 18 is fed to the feed chain so that the grain stick holding rod 18 shown in FIG. 2 is urged by the grain stem receiving feed chain portion 9a. It is possible to switch between the normal work position in which the grain 9 is pushed down to 9 and the hand operation position in which the grain stem holding rod 18 shown in FIG. The operation when switching the work position will be described below.

First, the state in the normal working position will be described. As described above, since the main rod 26 of the grain stalk presser rod 18 is elastically biased to the grain stalk receiving feed chain portion 9a of the feed chain 9, the grain stalks transported by the harvested grain stalk transport device 8 are The grain culm receiving feed chain portion 9a
And the main rod 26 are held in between. Then, the inherited grain culm is the grain culm receiving feed chain part 9a on the stock side.
While being held by the main rod 26 and the main rod 26, the auxiliary rod 27 is conveyed to the grain-culling holding position B while being held above the tip end side. For this reason, the tip side of the cutting grain culm inherited by the function of the auxiliary rod 27 does not stand up above the auxiliary rod 27, and when the grain culm is carried to the grain holding position B, the cutting grain culm is caught on the inner surface of the cutting rail 11. Things will disappear.

Next, in order to move the grain stalk presser bar 18 from the normal work position to the manual handling work position, the presser bar case 19 is rotated.
The operation when swinging upward around 7 will be described. The presser bar case 19 is swung upward by holding the handle 23. At this time, the holding rod case 19 swings independently until the engagement pin 20 contacts the guide rod 14, and after the engagement pin 20 contacts the guide rod 14, the engagement pin 20 moves the guide rod 14 upward. To move. At this time, the guide rod 14 is the slide rail 1
Since it is fixed to the front end portion 11a of No. 1, the sliding rail 1
The front end portion 11a of No. 1 swings upward. That is, the engagement pin 2
After 0 comes into contact with the guide rod 14, the pressing rod case 19, the guide rod 14 and the front end portion 11a are integrally rotated to be upward with respect to the feed chain 9. At this time, the front part of the grain-culling holding position B is opened by an amount corresponding to the front end 11a swinging around the fulcrum shaft 10.

The pressing rod case 19 is swung to a position where the upper surface of the pressing rod case 19 or the support shaft 21a protruding from the upper surface comes into contact with the front surface of the threshing device 3. Further, at this position, the spring 25 exceeds the fulcrum shaft 17. As described above, the holding rod case 19 is elastically fixed by the spring 25 at the above position. Alternatively, the spring 12 and the spring 2 urging the front end 11a of the slide rail 11
The presser bar case 19 may be fixed at a position where 5 is balanced.

Further, since the grain stick holding rod 18 is supported by the holding rod case 19 as described above, when the holding rod case 19 swings upward as described above, the support shaft 21a causes the holding rod case to move. From the 19 in the X direction, the grain rod holding rod 18
The support shaft 21b retracts in the Y direction via the (main rod 26). Therefore, the front end of the grain stick holding rod 18 is separated from the holding rod case 19, and the end portion is inclined from the holding rod case 19 toward the holding rod case 19 and is separated from the grain stick receiving feed chain portion 9a. Then, until the end face of the attachment portion 26b of the grain stick holding rod 18 comes into contact with the lower surface of the holding rod case 19, the grain stick holding rod 1
8 is inclined, and when the presser bar case is in the upright state as described above, the terminal end of the maximum slanted grain presser bar 18 is close to the guide rod 14, and the grain stick presser rod 18, the guide rod 14, The sliding rail 11 forms a continuous guide portion, and together with the grain culm receiving feed chain portion 9a, a narrow grain culm receiving path having a wide front opening in a side view is configured. Therefore, there is no obstacle in front of the operator who performs the manual handling work, and the smooth guide portion allows the grain culms to be smoothly inserted into the grain culm receiving path.

Next, the operation of swinging the holding rod case 19 downward from the manual work position and returning it to the normal work position will be described. When the pressing rod case 19 is swung downward by the handle 23, the grain rod pressing rod 18 is swung downward, and the guide rod 14 moves toward the engaging pin 20 until the guide rod 14 is separated from the engaging pin 20. According to the movement, the front end of the sliding rail 1
Swing 1a downward. When the guide rod 14 is separated from the engaging pin 20, the holding rod case 19 is independently swung downward, and the slider rail front end 11a is returned to the normal working position by the spring 12.

At this time, the grain rod pressing rod 18 swings downward with the downward swing of the pressing rod case 19, but the main rod 26
Since the end portion of the guide rod 14 and the guide rod 14 are in the above-described positional relationship, the inner surface of the end portion of the main rod 26 is in sliding contact with the outer surface of the guide rod 14. For this reason, the grain rod pressing rod 18 swings through the outside of the guide rod 14 so that it does not enter the sling rail 11. In other words, grain culling rod 1
8 is guided by the guide rod 14 and moves below the presser guide 15 to return to the normal working position.

[0024]

According to the present invention configured as described above, by bringing the end of the grain culling rod closer to the guide rod when the grain culling rod is raised in the handing work position, Since the grain stalk presser rod, the guide rod, and the front end of the sling rail form a guide part that continuously stands up with respect to the feed chain, the grain stalk receiving path with a wide and narrow frontage is formed together with the feed chain. Has an effect that it can be smoothly inserted into the grain culm receiving path, and that there are no obstacles in front of the operator's eyes, and that hand-handling work can be performed easily.

Further, since the grain stalk presser rod returns to the normal working position from the hand-operated position along the guide rod, a returning member is not required, the structure can be simplified, and the rear end of the grain stalk presser rod is guided. Since it swings while making sliding contact with the side surface of the rod, it is possible to eliminate the inconvenience that the grain rod pressing rod gets into the slide rail.

Further, since the grain stalk presser rod is constructed so as to sandwich the sliding rail between the main rod and the auxiliary rod, the harvested grain stalks inherited by the feed chain are smoothly conveyed without being caught on the inner surface of the sliding rod. In addition, since the auxiliary rod is installed above the grain culm tip side of the main rod, it is possible to prevent the tip side of the harvested grain culm inherited by the feed chain from rising, and the grain culm to the handling cylinder in the threshing device. Also has the effect of improving the supply attitude.

[Brief description of drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is an enlarged side view of a main part of a front end portion of a feed chain in a normal working state.

FIG. 3 is a view on arrow A direction.

FIG. 4 is an enlarged side view of a main portion of a front end portion of a feed chain in a manual handling state.

[Explanation of symbols]

 4 Threshing device 9 Feed chain 11 Clamping rail 14 Guide rod 18 Grain-clamping rod 26 Main rod 27 Auxiliary rod

Claims (3)

[Claims] 1. A feed chain (9) attached to a threshing device (4), and a slide rail (11) provided above the feed chain (9) for holding a grain culm together with the feed chain (9), A grain stick holding rod (18) supported at the front end of the sling rail (11) so as to be vertically swingable with respect to the feed chain (11), and the grain stem holding rod (18) is provided with a feed chain (11). 9) In a device for switching between a manual working position for standing upright with respect to the feed chain (9) and a normal working position for tilting the front end relative to the feed chain (9), in the manual working position at the front end of the slide rail (11). In the state where the guide rod (14) for guiding the grain culm above the front end of the sling rail (11) to the lower side of the sling rail (11) is provided, and the grain rod pressing rod (18) is erected in the handing work position, Grain squeeze bar (18 ) Is arranged to be close to the guide rod (14) side, and the grain stem holding rod (18), the guide rod (14), and the flap rail (11) are continuous with the feed chain (9). A grain culm conveying device to a threshing device having a mechanism for forming a guide portion. 2. A feed chain (9) attached to a threshing device (4), and a slide rail (11) provided above the feed chain (9) for holding a grain culm together with the feed chain (9). A grain stick holding rod (18) supported at the front end portion of the sling rail (11) so as to be vertically swingable with respect to the feed chain (9), and the grain stick holding rod (1)
In a device for switching 8) between a manual work position where the feed chain (9) stands up and a normal work position where the front end is laid down with respect to the feed chain (9),
At the front end of the slide rail (11), the grain culm above the front end of the slide rail (11) in the handing work position is inserted into the slide rail (1
1) A guide rod (14) for guiding downward is provided, and the grain stick holding rod (18) is slidably brought into contact with the side surface of the guide rod (14) when the work position switching swings. 1
8) A grain culm transporting device to a threshing device having a guide rod (14). 3. A grain rod presser rod (18) is composed of a main rod (26) and an auxiliary rod (27) formed so as to sandwich the flap rail (11) from the left and right in the normal working position, and the auxiliary rod (27) is also assisted. The grain culm conveying device for the threshing device according to claim 1 or 2, wherein the rod (27) is located above the grain culm tip side of the main rod (26).