JP7403396B2 - combine - Google Patents

Description

The present invention relates to a combine harvester.

The combine includes a reaping section that cuts the base of the planted grain culm and reaps the planted grain culm, and a reaping pretreatment section that has a supply conveyance device that transports the reaped grain culm cut by the reaping section rearward. There is also a threshing device that has a threshing feed chain to which the harvested grain culm is supplied by a supply conveyance device, and is equipped with a threshing device that threshes the harvested grain culm.
This type of combine harvester is shown in Patent Document 1, for example. The combine shown in Patent Document 1 is equipped with a reaping device that reaps the planted grain culms at the base of the plant, and a reaping pre-processing section that includes a feeding device that transports the harvested grain culms from the reaping device in a rearward direction. A threshing device is provided having a threshing feed chain to which the harvested grain culm is fed.
In this type of combine harvester, the supply conveyance device includes a stump clamping and conveying section that pinches and conveys the stump side part of the reaped grain culm by an endless rotary stump head conveyor and a stump conveyance guide rod, and There are some types that are equipped with a tip locking and conveying part that locks and conveys the side part of the tip by an endless rotating tip conveying body and a tip conveying guide rod.

Japanese Patent Application Publication No. 2010-263852

For example, when the supply and conveyance device is clogged with grain stems, the connection of the stump conveyance guide rod and the ear tip conveyance guide rod to the support section is released, and the stump conveyance guide rod and the ear tip conveyance guide rod are removed from the supply conveyance device to clear the blockage. Once the clog has been cleared and the blockage can be cleared, the stock base conveyance guide rod and the ear tip conveyance guide rod are attached back to the supply conveyance device, but conventionally, the stock base conveyance guide rod and the ear tip conveyance guide rod are connected to the support section using a plurality of screws. It is time-consuming to attach the stock transfer guide rod and the ear tip transfer guide rod to the supply conveyance device, as it is necessary to put back the connecting bolts and prepare tools. There is a demand for a combine harvester that can quickly attach the tip conveyance guide rod to the supply conveyance device.

The present invention provides a combine harvester that allows the stock head conveyance guide rod and the ear tip conveyance guide rod to be quickly attached back to the supply conveyance device.

The combine according to the invention comprises:
a reaping section that cuts the base of the planted grain culm and reaps the planted grain culm; a reaping pretreatment section that has a supply conveyance device that transports the reaped grain culm cut by the reaping section rearward; and the supplying section. A threshing device has a threshing feed chain to which the harvested grain culm is supplied by a conveyance device, and performs a threshing process on the harvested grain culm. A stock head clamping conveyance unit that pinches and conveys the stock by a moving stock base conveyor and a stock head conveyance guide rod, and an ear tip section that locks and conveys the ear side part of the harvested grain culm by an endless rotating ear tip conveyor and a ear tip conveyance guide rod. A stop conveyance section is provided, and the stock conveyance guide rod is provided with a first connection section that removably connects the stock conveyance guide rod to the support frame, and the first connection section is connected to the support frame. a first positioning mechanism for positioning the stock base conveyance guide rod with respect to the endless rotating stock base conveyor body; A first locking mechanism is provided for fixing the tip, and the tip conveying guide rod is provided with a second connecting portion that removably connects the tip conveying guide rod to the support frame, and the second connecting portion is provided with a first locking mechanism for fixing the tip. , a second positioning mechanism for positioning the ear tip conveying guide rod with respect to the endless rotating ear tip conveying body; and a second locking mechanism for fixing the ear tip conveying guide rod to the support frame; The conveyance guide rod is supported by the support frame, and the second connecting portion provided on the tip conveying guide rod is connected to the first connecting portion provided on the stock base conveying guide rod. The tip conveyance guide rod is supported by the support frame by being supported by the stock base conveyance guide rod.

According to this configuration, the stock base transport guide rod can be fixed to the support frame by the first locking mechanism while the stock base transport guide rod is aligned with the endless rotating stock base transport body by the first positioning mechanism. Since the ear tip conveyance guide rod can be fixed to the support frame by the second locking mechanism while the position of the ear tip conveyance guide rod with respect to the rotary ear tip conveyor is aligned by the second positioning mechanism, the stock head conveyance guide rod can be endlessly rotated. After the stock head conveyance guide rod is aligned with the stock head conveyor, attach it back to the supply conveyance device, and when the ear tip conveyance guide rod is aligned with the endless rotating ear tip conveyor, supply the ear tip conveyor guide rod. To attach it back to the conveying device, there is no need to take special effort to align the stock head conveyance guide rod with the endless rotating stock source conveyor, and the ear tip conveyance guide rod can be attached to the endless rotary ear tip conveyor. It can be operated easily and quickly without any special effort for positioning.

According to this configuration, when the stock head conveyance guide rod is separated from the support frame, the ear tip conveyance guide rod is separated from the support frame together with the stock head conveyance guide rod, so that the stock head conveyance guide rod and the ear tip conveyance guide rod are supplied at once. It can be taken out from the transport device.

In the present invention,
The first positioning mechanism positions the stock transport guide rod in two of the three dimensional directions, and the first locking mechanism positions the stock transport guide rod in the remaining one of the three dimensional directions. The source conveyance guide rod is fixed, the second positioning mechanism positions the tip conveyance guide rod in two of the three-dimensional directions, and the second locking mechanism positions the tip conveyance guide rod in two of the three-dimensional directions. It is preferable to fix the tip conveying guide rod in the remaining one-dimensional direction.

According to this configuration, by fixing the stock base conveyance guide rod by the first locking mechanism, the stock base conveyance guide rod can be positioned in the remaining one dimension among the three dimensional directions, so that the stock base conveyance guide rod can be positioned in the remaining one dimension among the three dimensional directions. Compared to having a positioning mechanism perform the positioning of the conveyance guide rod, the first positioning mechanism can have a simple structure that only performs positioning in two-dimensional directions. By fixing the ear tip conveyance guide rod by the second locking mechanism, the position of the ear tip conveyance guide rod can be performed in the remaining one-dimensional direction of the three-dimensional directions. The structure of the second positioning mechanism can be reduced to a simple structure that only performs positioning in two-dimensional directions.

In the present invention, it is preferable that the first positioning mechanism and the second positioning mechanism include a pin hole and a positioning pin that is inserted into the pin hole.

According to this configuration, the first positioning mechanism and the second positioning mechanism can be brought into operation by a simple operation of simply inserting the positioning pin into the pin hole.

In the present invention,
Preferably, at least one of the first locking mechanism and the second locking mechanism includes a fastener that can be tightened manually.

According to this configuration, at least one of the first locking mechanism and the second locking mechanism can be brought into operation by manual operation without preparing a tool.

In the present invention,
At least one of the first locking mechanism and the second locking mechanism has a receiving part, a headed pin extending from the receiving part, and a pin hole part larger than the head of the headed pin, and the an abutting portion that makes surface contact with the receiving portion when the headed pin is passed through the pin hole; and a contact portion that makes contact with the head of the headed pin and the A wedge member that is fitted into the gap between the contact portion and the contact portion is preferably provided, and the wedge member is preferably provided so that it can be positioned in a state in which it is fitted into the gap and in a state in which it is removed from the gap. It is.

According to this configuration, at least one of the first locking mechanism and the second locking mechanism can be brought into operation by simply inserting the wedge member into the gap between the head of the headed pin and the abutment part. Can be done.

In the present invention,
Preferably, the headed pin extends from the receiving portion toward the outer side of the fuselage, and the abutting portion is configured to abut the receiving portion from the outer side of the fuselage.

According to this configuration, it is easy to engage and disengage the headed pin from the pin hole and to change the posture of the wedge member from the lateral outside of the body, making it easy to operate the locking mechanism.

It is a left side view showing the whole combine. It is a top view which shows a reaping part and a supply conveyance device. It is a top view which shows the support structure of a stock head conveyance guide rod and an ear tip conveyance guide rod. It is a front view which shows the support structure of a stock head conveyance guide rod and a tip conveyance guide rod. It is a top view which shows a 1st support part. It is a bottom view showing a 1st positioning mechanism, a 1st locking mechanism, a 2nd positioning mechanism, and a 2nd locking mechanism.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment which is an example of this invention is described based on drawing.
In the following explanation, regarding the traveling body of the combine harvester, the direction of arrow F shown in FIG. The direction of the page is "bottom of the aircraft," the direction of the front side of the paper is "left of the aircraft," and the direction of the back of the paper is "right of the aircraft."

[Whole combine harvester]
A combine harvester includes a traveling body having a body frame 1 configured by connecting a plurality of steel materials such as square pipe materials, and a pair of left and right crawler type traveling devices 2 provided at the lower part of the body frame 1. A driver section 4 having a driver seat 3 is provided on one lateral side of the front portion of the traveling aircraft. A pre-harvesting processing section 5 is provided on the front side of the traveling machine on the side opposite to the driving section side, which harvests the planted grain culms of rice or wheat and transports the harvested grain culms to the rear. The reaping pre-processing section 5 is provided so as to be operable to move up and down between a lowered working state and a raised non-working state. A threshing device 6 is provided at the rear of the traveling machine. The threshing device 6 has a threshing feed chain 7 to which the reaped grain culm is supplied by the reaping pre-processing section 5, and the stock side of the reaped grain culm is held and conveyed by the threshing feed chain 7, and the ear end side of the reaped grain culm is conveyed by the threshing feed chain 7. The grain is inserted into a handling chamber (not shown), and the tip side is threshed by a rotating handling drum (not shown), and a sorting process is performed to separate the grain obtained by the threshing process from dust such as cut straw. . A grain tank 8 for collecting and storing grains obtained by the threshing device 6 is provided on the side opposite to the threshing device side at the rear of the traveling machine. A grain discharge device 9 for discharging grains from the grain tank 8 is connected to the rear of the grain tank 8 .

[Configuration of pre-reaping processing section]
As shown in FIG. 1, the reaping preprocessing section 5 includes a reaping section 5A provided at the front of the reaping preprocessing section 5, and a supply conveyance device 5B provided at the rear of the reaping preprocessing section 5. We are prepared.

As shown in FIGS. 1 and 2, the reaping section 5A is provided with three lifting paths 10 for introducing the planted grain culms of three planting rows separately by the machine running, and is provided in each pulling path 10, and is provided in each pulling path 10. A hoisting device 11 for hoisting the planted grain culms introduced in 10, and a clipper-shaped reaping device 12 installed behind the hoisting device 11 for cutting the stock base of three rows of planted grain culms. We are prepared. An endless rotary scraping body 13 is provided behind each pulling device 11 to scrape and supply the side of the plant base of the planted grain culm to be pulled up to the reaping device 12.

As shown in FIGS. 1 and 2, the supply conveyance device 5B is rotatably provided above the reaping device 12 in correspondence with the terminal end of each endless rotary raking body 13, and is located on the stock base side of the harvested grain culm. A rotary wheel 15 that scrapes the grain to the rear of the reaping device 12, and a left relay conveyor that conveys one row of harvested grain culm from the leftmost rotary wheel 15 of the three rotary wheels 15 to the confluence point 14. 23, the harvested grain culm from the rightmost rotating wheel 15 of the three rotating wheels 15, and the harvested grain culm from the center rotating wheel 15 of the three rotating wheels 15 to the confluence point 14. and a merging conveyance section 16 that conveys three rows of reaped grain culms conveyed to the merging point 14 rearward and supplies them to the starting end of the threshing feed chain 7.

As shown in FIG. 2, the merging conveyance unit 16 holds the side part of the stalk of the harvested grain culm transported to the merging point 14 rearward between the endless rotary stalk conveyor 17 and the stalk conveying guide rod 18. The stock clamping conveyance section 16A transports and supplies the grain to the starting end of the threshing feed chain 7, and the side part of the ear tip of the harvested grain culm conveyed to the confluence point 1419 is conveyed by the endless rotary ear tip conveyor 19 and the ear tip conveyance guide rod 20. It includes an ear locking and conveying section 16B that locks and conveys the grain toward the threshing feed chain 7. The ear-end locking conveyor section 16B moves the ear-end side portion of the harvested grain culm to the inner side of the machine body than the threshing feed chain 7 when the stock head clamping conveyor section 16A supplies the side portion of the crop head of the harvested grain culm to the threshing feed chain 7. The posture of the harvested grain culm to be pulled and fed to the threshing feed chain 7 is changed to a sideways posture. In this embodiment, the endless rotating ear tip conveying body 19 of the merging conveyance section 16 and the endless rotating ear tip conveying body configuring the ear tip locking conveyance section of the right relay conveying section 24 are the same endless rotating ear tip conveying body. made up of the body. The endless rotary ear tip conveyor 19 of the merging conveyor section 16 and the endless rotary ear tip conveyor of the right relay conveyor section 24 may be configured as separate endless rotary ear tip conveyors. In this embodiment, the endless rotating stock source conveyor 17 is constituted by an endless rotating chain having links with protrusions. The endless rotating tip carrier 19 is constituted by an endless rotating chain having locking arms extending from links.

[Configuration of stock base conveyance guide rod and ear tip conveyance guide rod]
As shown in FIGS. 1 and 2, the supply conveyance device 5B is equipped with a support frame 21 that supports the stock conveyance guide rod 18 and the ear conveyance guide rod 20. The support frame 21 extends from the pre-processing section frame 22 (see FIG. 1), passes above the transport path 16R (see FIG. 4) in the combined transport section 16 in the width direction of the machine body, and extends toward the lateral outside of the transport path 16R. ing. The support frame 21 is constituted by a circular tube member.

As shown in FIGS. 3 and 4, the stock head conveyance guide rod 18 and the ear tip conveyance guide rod 20 are detachably supported by a support frame 21. When resolving grain culm clogging in the merging conveyance section 16, by separating the stock head conveyance guide rod 18 and the ear tip conveyance guide rod 20 from the support frame 21, the stock head conveyance guide rod 18 and the ear tip conveyance guide rod 20 can be combined conveyed. It can be taken out from the section 16 (supply conveyance device 5B). By connecting the stock head conveyance guide rod 18 and the ear tip conveyance guide rod 20 to the support frame 21, the stock head conveyance guide rod 18 and the ear tip conveyance guide rod 20 can be returned to the merging conveyance section 16 (supply conveyance device 5B).

Specifically, as shown in FIGS. 3 and 5, the extending end portion of the support frame 21 is provided with a first support portion 25 that supports the stock conveyance guide rod 18. As shown in FIG. 5, the first support section 25 includes a base section 26 connected to the support frame 21, and an extension section 27 extending rearward from the base section 26. The base portion 26 is bolted to the support frame 21. The base portion 26 and the extension portion 27 are connected by welding.

As shown in FIGS. 3 and 4, the stock head conveyance guide rod 18 is provided with a first connecting portion 28 that allows the stock head conveyance guide rod 18 to be supported by the support frame 21. As shown in FIGS. The first connecting portion 28 is connected to an intermediate portion of the stock conveyance guide rod 18 in the front-rear direction (longitudinal direction) via a connecting member 29 . As shown in FIG. 4, the first connecting portion 28 includes a horizontal plate portion 28a and a vertical plate portion 28b extending downward from an end of the horizontal plate portion 28a. The horizontal plate part 28a of the first connecting part 28 is placed on the mounting surface 27a provided on the extension part 27, and the vertical plate part 28b of the first connecting part 28 is the vertical side part provided on the extension part 27. 27b, the first connecting portion 28 engages with the first supporting portion 25. Specifically, the first connecting portion 28 engages with the extension portion 27 .

As shown in FIGS. 3 and 4, the first connecting portion 28 includes a first positioning mechanism 40 for positioning the stock base conveyance guide rod 18 with respect to the endless rotating stock base conveyor 17, and a stock base conveyance with respect to the support frame 21. A first locking mechanism 50 for fixing the guide rod 18 is provided.

As shown in FIGS. 3 and 4, when the first connecting portion 28 is engaged with the first supporting portion 25 and the first locking mechanism 50 is activated, the stock conveyance guide rod 18 is moved to the first locking mechanism. 50 is fixed to the support frame 21. When the stock head conveyance guide rod 18 is fixed to the support frame 21, the position of the stock head conveyance guide rod 18 with respect to the endless rotating stock head conveyor 17 is performed by the first positioning mechanism 40, and the stock head conveyance guide rod 18 is , the stock head conveyance guide rod 18 is installed in the merging conveyance section 16 (supply conveyance device 5B) in a state in which positioning with respect to the endless rotating stock base conveyor body 17 is performed.

As shown in FIGS. 3 and 4, a second connecting portion 30 for supporting the ear tip conveying guide rod 20 on the support frame 21 is provided at the intermediate portion of the ear tip conveying guide rod 20 in the front-rear direction (longitudinal direction). . The second connecting portion 30 is configured to be supported by the first connecting portion 28 while being placed on top of the first connecting portion 28 . The ear tip conveyance guide rod 20 is supported by the support frame 21 by being supported by the stock head conveyance guide rod 18 via the first connecting portion 28 . The second connecting portion 30 includes a second positioning mechanism 60 that positions the tip conveying guide rod 20 with respect to the endless rotating tip conveying body 19, and a second locking mechanism 70 that fixes the tip conveying guide rod 20 with respect to the support frame 21. It is equipped.

When the second connecting portion 30 is placed on the first connecting portion 28, the second locking mechanism 70 is activated, and the second positioning mechanism 60 is activated, the endless rotary ear tip carrier 19 is The ear tip conveying guide rod 20 is fixed to the support frame 21 in a state where the positioning of the ear tip conveying guide rod 20 is performed by the second positioning mechanism 60. 19 is installed in the merging conveyance section 16 (supply conveyance device 5B).

[First positioning mechanism]
As shown in FIG. 6, the first positioning mechanism 40 includes two positioning pins 41 provided on the first support portion 25 and two pin holes 42 provided on the first connecting portion 28. ing.

In the following description, as shown in FIGS. 3 and 4, the direction along the placement surface 27a of the first support part 25 and the axial direction of the positioning pin 41 is the first direction [X], and the two positioning pins are The direction in which the pins 41 are lined up is a second direction [Y], and the direction perpendicular to the mounting surface 27a of the first support portion 25 is a third direction [Z].

In the first positioning mechanism 40, when the first connecting part 28 is engaged with the first supporting part 25, the two positioning pins 41 and the first connecting part 28 are engaged and enter the operating state. The positioning pin 41 suppresses the displacement of the first connecting portion 28 with respect to the first supporting portion 25 in the two directions [Y], and the position of the first connecting portion 28 with respect to the first supporting portion 25 in the third direction [Z]. Misalignment is suppressed by the positioning pin 41. The first positioning mechanism 40 positions the stock head transport guide rod 18 with respect to the endless rotating stock base transport body 17 in two-dimensional directions [Y, Z] of the three-dimensional directions [X, Y, Z].

[First locking mechanism]
As shown in FIG. 6, the first locking mechanism 50 includes a receiving portion 51 formed by the vertical side portion 27b of the extension portion 27 of the first support portion 25, and a vertical plate portion 28b of the first connecting portion 28. a contact portion 52 that makes surface contact with the receiving portion 51; two headed pins 41 constituting the two positioning pins 41; and two pin holes 42 provided in the contact portion 52. , and a wedge member 53 provided on the side opposite to the receiving portion side with respect to the contact portion 52.

The two headed pins 41 extend from the receiving portion 51 toward the abutting portion 52 . The size of the two pin holes 42 is larger than the head 41a of the headed pin 41, so that the head 41a can be inserted into the pin hole 42.

As shown in FIGS. 4 and 6, the wedge member 53 is inserted into the gap between the abutting portion 52 abutting the receiving portion 51 and the head 41a of the headed pin 41 inserted into the pin hole 42. The posture can be changed between a fitted state (operating state) and a state removed from the gap between the contact portion 52 and the head 41A (operating release). As shown in FIG. 6, one end portion of the wedge member 53 is supported by the contact portion 52 via a support pin 54. The wedge member 53 is swung around the support pin 54 as a fulcrum, thereby changing its posture between an activated state and a released state.

As shown in FIGS. 2 and 3, the headed pin 41 extends from the receiving portion 51 toward the lateral outside of the fuselage, and the contact portion 52 is configured to abut against the receiving portion 51 from the lateral outside of the fuselage. It is composed of The operation of engaging and disengaging the headed pin 41 from the pin hole 42 and the operation of changing the attitude of the wedge member 53 can be easily performed from the lateral outside of the fuselage.

As shown in FIGS. 4 and 6, when the wedge member 53 is brought into action, the wedge member 53 fits into the gap between the contact portion 52 and the head 41a and makes contact with the head 41a as a reaction force point. By pressing the portion 52, the abutting portion 52 is pressed against the receiving portion 51, and the first connecting portion 28 is pressed against the first supporting portion 25. As a result, the first locking mechanism 50 becomes activated and fixes the stock conveyance guide rod 18 to the support frame 21 in the first direction [X]. As shown in FIG. 6, by attaching a removable holding pin 55 to the wedge member 53 in the operating state and the first connecting portion 28, the wedge member 53 is held in the operating state by the holding pin 55. be done. The first locking mechanism 50 locks the stock in the remaining one-dimensional direction [X] among the three-dimensional directions [X, Y, Z], excluding the two-dimensional direction [Y, Z] of positioning performed by the first positioning mechanism 40. The original conveyance guide rod 18 is fixed to the support frame 21.

As the first locking mechanism 50 becomes activated and the abutting part 52 is fixed to the receiving part 51, the first connecting part 28 tightly engages with the two positioning pins 41, and the first positioning mechanism 40 Become active. At the same time as the first locking mechanism 50 fixes the stock head conveyance guide rod 18 to the support frame 21, the first positioning mechanism 40 positions the stock head conveyance guide rod 18 relative to the endlessly rotating stock head conveyor body 17.

When the attitude of the wedge member 53 is changed to the released state, the pressure contact of the abutment portion 52 against the receiving portion 51 by the wedge member 53 is released. As a result, the first locking mechanism 50 enters the released state, releases the fixation of the stock base conveyance guide rod 18 to the support frame 21, and allows the headed pin 41 to come out from the pin hole 42.

When the first locking mechanism 50 is released and the first connecting part 28 is separated from the first support part 25, the stock head conveyance guide rod 18 is separated from the support frame 21, and the stock head conveyance guide rod 18 is moved to the merging conveyance part. 16 (supply conveyance device 5B).

When the first locking mechanism 50 is activated, the first positioning mechanism 40 positions the stock base transport guide rod 18 relative to the endless rotating stock base transport body 17 in the two-dimensional direction [Y, Z]. The stock base transport guide rod 18 is fixed to the support frame 21 in the one-dimensional direction [X] by the first locking mechanism 50, and the stock base transport guide rod 18 is fixed to the support frame 21 in the one-dimensional direction [X, Y, Z], and the stock base transport guide rod 18 is fixed to the endless rotating stock base transport body 17 in the three-dimensional direction [X, Y, Z]. The stock source conveyance guide rod 18 can be installed in the merging conveyance section 16 (supply conveyance device 5B) in a state where the source conveyance guide rod 18 is positioned.

[Second positioning mechanism]
As shown in FIGS. 3 and 4, the second positioning mechanism 60 includes a first positioning pin 61, a second positioning pin 62, a first pin hole 63, and a second pin hole 64. ,have.

The first pin hole portion 63 is provided across the second connecting portion 30 and the first connecting portion 28 . As shown in FIG. 3, the second pin hole portion 64 is provided in the tip conveyance guide rod 20 at a location away from the first pin hole portion 63 in the front-rear direction. In this embodiment, the second pin hole 64 is spaced forward from the first pin hole 63. The first positioning pin 61 is configured to detachably engage the first pin hole 63. The second positioning pin 62 is provided upright on a second support portion 65 provided in the support frame 21 and is configured to removably engage in the second pin hole portion 64 . The second support section 65 is configured by a transport case included in the left relay transport section 23 supported by the support frame 21 .

In the second positioning mechanism 60, the first positioning pin 61 and the second positioning pin 62 suppress the misalignment of the ear tip conveying guide rod 20 with respect to the endless rotary ear tip conveying body 19 in the first direction [X]. The first positioning pin 61 and the second positioning pin 62 suppress the misalignment of the ear tip conveying guide rod 20 with respect to the endless rotating ear tip conveying body 19 in the two directions [Y].

The second positioning mechanism 60 is brought into operation when the first positioning pin 61 is engaged in the first pin hole 63 and the second positioning pin 62 is engaged in the second pin hole 64. Positioning of the tip conveying guide rod 20 with respect to the endless rotating ear tip conveying body 19 in the first direction [X], and positioning of the tip conveying guide rod 20 with respect to the endless rotating ear tip conveying body 19 in the second direction [Y]. and do it. The second positioning mechanism 60 positions the ear tip conveyance guide rod 20 with respect to the endless rotating ear tip conveyor 19 in a two-dimensional direction [X, Y] of the three-dimensional directions [X, Y, Z].

As shown in FIGS. 3 and 4, the second locking mechanism 70 includes a fastener 71 that can be tightened manually. As shown in FIGS. 3 and 4, the fastener 71 is inserted into the second connecting part 30 and the first connecting part 28 from above, and is engaged with the locking part 72 provided on the back side of the first connecting part 28. The second connecting portion 30 is configured to be tightened and connected to the first connecting portion 28 by fitting the second connecting portion 30 together. In this embodiment, the fastener 71 is constituted by a bolt with a knob.

The second locking mechanism 70 comes into operation when the second connecting part 30 is tightened and fixed to the first connecting part 28 by the fastener 71, and the ear tip conveying guide rod 20 is fixed to the stock head conveying guide rod 18. , the tip conveyance guide rod 20 is fixed to the support frame 21 in the third direction [Z]. The second locking mechanism 70 locks the ear tip in the remaining one-dimensional direction [Z] among the three-dimensional directions [X, Y, Z], excluding the two-dimensional direction [X, Y] of positioning performed by the second positioning mechanism 60. The conveyance guide rod 20 is fixed to the support frame 21.

Either the second locking mechanism 70 is released and the second connecting part 30 is separated from the first connecting part 28, or the second locking mechanism 70 is left in operation and the first locking mechanism 50 is released. The stock conveyance guide rod 18 is separated from the support frame 21. Then, the ear tip conveyance guide rod 20 is separated from the support frame 21, and the ear tip conveyance guide rod 20 can be taken out from the merging conveyance section 16 (supply conveyance device 5B).

When the second positioning mechanism 60 is activated and the second locking mechanism 70 is activated, the positioning of the ear tip conveying guide rod 20 with respect to the endless rotating ear tip conveying body 19 in the two-dimensional direction [X, Y] is performed by the second positioning mechanism. 60, and the second locking mechanism 70 fixes the tip conveying guide rod 20 to the support frame 21 in the remaining one-dimensional direction [Z] of the three-dimensional direction [X, Y, Z]. The ear tip conveyance guide rod 20 can be installed in the merging conveyance section 16 (supply conveyance device 5B) in a state where the ear tip conveyance guide rod 20 is positioned with respect to the endless rotating ear tip conveyor 19 in [X, Y, Z].

[Another embodiment]
(1) In the embodiment described above, an example was shown in which the tip conveyance guide rod 20 is supported by the support frame 21 via the stock conveyance guide rod 18, but the present invention is not limited to this. The tip conveyance guide rod 20 is supported on the support frame 21 and the stock head conveyance guide rod 18 is supported on the ear tip conveyance guide rod 20 to be supported on the support frame 21, or the ear tip conveyance guide rod 20 and the stock head conveyance guide. The rods 18 may be supported separately on the support frame 21.

(2) In the embodiment described above, an example was shown in which the first locking mechanism 50 was equipped with the wedge member 53 and the second locking mechanism 70 was equipped with the fastener 71, but the present invention is not limited to this. For example, the first locking mechanism 50 is equipped with a fastener and the second locking mechanism 70 is equipped with a wedge member, or both the first locking mechanism 50 and the second locking mechanism 70 are equipped with a wedge member. Alternatively, both the first locking mechanism 50 and the second locking mechanism 70 may be provided with fasteners. Further, the first locking mechanism 50 and the second locking mechanism 70 may include various fixing means other than the wedge member and the fastener, such as a snap lock or a cam body.

The present invention can be applied to a combine harvester having a number of reaping rows other than two or three rows.

5 Pre-reaping processing section 5A Reaping section 5B Supply conveyance device 6 Threshing device 7 Threshing feed chain 16A Stock head clamping conveyance section 16B Ear tip locking conveyance section 17 Endless rotary stock source conveyor 18 Stock head conveyance guide rod 19 Endless rotating ear tip Conveyor 20 Tip conveyance guide rod 21 Support frame 28 First connecting part 30 Second connecting part 40 First positioning mechanism 41 Positioning pin, headed pin 41a Head 42 Pin hole 50 First locking mechanism 51 Receiving part 52 Contact Part 53 Wedge member 60 Second positioning mechanism 61 Positioning pin (first positioning pin)
62 Positioning pin (second positioning pin)
63 Pin hole (first pin hole)
64 Pin hole (second pin hole)
70 Second lock mechanism 71 Fastener

Claims (6)

a reaping section that cuts the base of the planted grain culm to reap the planted grain culm; and a reaping pretreatment section that includes a supply and conveyance device that transports the reaped grain culm cut by the reaping section rearward;
A threshing device that has a threshing feed chain to which the harvested grain culm is supplied by the supply conveyance device, and performs a threshing process on the harvested grain culm,
The supplying and conveying device includes a stock clamping and conveying unit that pinches and transports the stock end side of the harvested grain culm between an endlessly rotating stock base conveyor and a stock transport guide rod, and an endless rotating stock end side portion of the harvested grain culm. A tip locking and conveying section is provided, which is locked and conveyed by a moving tip conveying body and a tip conveying guide rod,
The stock transport guide rod is provided with a first connecting portion that removably connects the stock transport guide rod to a support frame,
The first connecting portion is removable from the support frame,
The first connecting portion includes a first positioning mechanism that positions the stock base conveyance guide rod with respect to the endless rotating stock base conveyor body, and a first lock mechanism that fixes the stock base conveyance guide rod with respect to the support frame. and,
The ear tip conveyance guide rod is provided with a second connecting portion that removably connects the ear tip conveyance guide rod to the support frame,
The second connecting portion includes a second positioning mechanism for positioning the ear tip conveying guide rod with respect to the endless rotating ear tip conveying body, and a second locking mechanism for fixing the ear tip conveying guide rod to the support frame. provided,
The stock conveyance guide rod is supported by the support frame,
The second connecting portion provided on the ear tip conveying guide rod is connected to the first connecting portion provided on the stock head conveying guide rod, so that the ear tip conveying guide rod is connected to the stock head conveying guide rod. A combine harvester supported by the support frame by being supported by the combine harvester. The first positioning mechanism positions the stock conveyance guide rod in a two-dimensional direction among three-dimensional directions,
The first locking mechanism fixes the stock conveyance guide rod in the remaining one-dimensional direction of the three-dimensional directions,
The second positioning mechanism positions the tip conveying guide rod in a two-dimensional direction among three-dimensional directions,
The combine harvester according to claim 1, wherein the second locking mechanism fixes the tip conveying guide rod in the remaining one-dimensional direction among the three-dimensional directions. The combine harvester according to claim 1 or 2, wherein the first positioning mechanism and the second positioning mechanism have a pin hole and a positioning pin that is inserted into the pin hole. The combine harvester according to any one of claims 1 to 3, wherein at least one of the first locking mechanism and the second locking mechanism includes a fastener that can be tightened manually. At least one of the first locking mechanism and the second locking mechanism has a receiving part, a headed pin extending from the receiving part, and a pin hole part larger than the head of the headed pin, and the an abutting portion that makes surface contact with the receiving portion when the headed pin is passed through the pin hole; and a contact portion that makes contact with the head of the headed pin and the a wedge member fitted into the gap between the contact portion and the contact portion;
The combine harvester according to any one of claims 1 to 4, wherein the wedge member is configured so that it can be put into a state where it fits into the gap and a state where it is removed from the gap. The headed pin extends laterally outward from the receiving portion,
The combine harvester according to claim 5, wherein the abutting portion is configured to abut the receiving portion from the lateral outside of the machine body.

Images