JP7317766B2 - combine - Google Patents

Description

The present invention relates to a combine.

The combine has a reaping section that cuts the base of the planted grain culm and reaps the planted grain culm, and a pre-harvesting processing section that has a feeding and conveying device that conveys the reaping grain culm that has been reaped by the reaping section to the rear. and a threshing device that has a threshing feed chain to which harvested grain culms are supplied by a feeding and conveying device and performs threshing processing of the harvested grain culms.
As this type of combine, there is, for example, one disclosed in Patent Document 1. The combine disclosed in Patent Document 1 is provided with a harvesting device that harvests planted grain culms at the base of the plant, and a pre-harvesting processing unit that has a feeding device that conveys the harvested grain culms from the harvesting device backward. A threshing apparatus is provided having a threshing feed chain to which culms are fed.
In this type of combine, the feeding and conveying device includes a stock nipping and conveying section for pinching and conveying the side portion of the culm base of the harvested grain culm between the endless rotating culm conveyance body and the culm base conveying guide rod, and the feeding and conveying device. There is one provided with a tip locking and conveying portion that locks and conveys the tip side portion by the endless tip conveying body and the tip conveying guide rod.

JP 2010-263852 A

For example, when the culms are clogged in the feeding and conveying device, the stock base conveying guide rod and the tip conveying guide rod are disconnected from the support portion and removed from the feeding and conveying device to remove the clogging. Although it is solved, conventionally, it is necessary to release the connection by a plurality of connecting bolts that connect the stock base conveying guide rod and the tip conveying guide rod to the support part, and it is necessary to prepare a tool. It takes time and effort to take out the stem base transport guide rod and the tip transport guide rod from the supply transport device, such as the need to remove the stem transport guide rod and the tip transport guide rod separately from the support part. In addition, it takes time and effort to attach the stem base transport guide rod and the tip transport guide rod to the supply transport device, so a combine harvester that can quickly attach and detach the stem transport guide rod and the tip transport guide rod to the feed transport device is requested. It is

The present invention provides a combine harvester in which a stock base conveying guide rod and a tip conveying guide rod can be easily and quickly attached to and detached from a supply conveying device.

The combine according to the invention is
A pre-harvesting processing unit having a harvesting unit for cutting planted grain culms and harvesting planted grain culms; a threshing device that has a threshing feed chain to which harvested grain culms are supplied by a conveying device and performs threshing processing of the harvested grain culms, and the feeding and conveying device endlessly rotates the base side portion of the harvested grain culms. A stem nipping and conveying part for nipping and conveying by a moving stem pedestal conveying body and a stem pedestal conveying guide rod; A stop conveying portion and a support frame for supporting the stem conveying guide rod and the tip conveying guide rod are provided, and the support frame is divided into a base end side frame portion and a free end side frame portion. a connecting mechanism for detachably connecting the free end frame portion to the base end frame portion ; The coupling mechanism includes a lock mechanism for fixing the free end frame portion to the base end frame portion, and the lock mechanism includes a receiving portion provided on the base end frame portion, A contact portion provided on a side frame portion, and a manual operating tool capable of changing a swing posture between an operating state in which the contact portion is pressed against the receiving portion and a release state in which the pressure contact is released. , the manual operation tool is supported by the contact portion .

According to this configuration, the free-end frame can be separated from the proximal-side frame simply by releasing the connection mechanism that connects the free-end-side frame to the proximal-side frame. When the frame portion is separated from the base end side frame portion, the stock base conveying guide rod and the tip conveying guide rod are attached to the free end side frame portion at once, and are separated from the base end side frame portion and separated from the feeding and conveying device. The stock base conveying guide rod and the tip conveying guide rod can be easily and quickly removed from the feeding and conveying device. It is also easy and quick to attach the stock base conveying guide rod and the tip conveying guide rod to the feeding and conveying device.
Another combine according to the invention comprises:
A pre-harvesting processing unit having a harvesting unit for cutting planted grain culms and harvesting planted grain culms; a threshing device that has a threshing feed chain to which harvested grain culms are supplied by a conveying device and performs threshing processing of the harvested grain culms, and the feeding and conveying device endlessly rotates the base side portion of the harvested grain culms. A stem nipping and conveying part for nipping and conveying by a moving stem pedestal conveying body and a stem pedestal conveying guide rod; A stop conveying portion and a support frame for supporting the stem conveying guide rod and the tip conveying guide rod are provided, and the support frame is divided into a base end side frame portion and a free end side frame portion. a connecting mechanism for detachably connecting the free end frame portion to the base end frame portion; The feeding and conveying device is provided with a relay conveying portion that is supported by the free end side frame portion and conveys the harvested grain culms from the harvesting portion toward the stock base clamping conveying portion and the tip locking conveying portion, a power transmission device that is installed inside the support frame and transmits power to the relay conveying unit, the power transmission device including a first split transmission shaft positioned on the upper side in the transmission direction inside the support frame; a rotary transmission shaft divided into the first divided transmission shaft and a second divided transmission shaft located on the same axis as the first divided transmission shaft in a transmission direction, and the first division A joint member capable of changing the state between a connection state in which the transmission shaft and the second split transmission shaft are connected and a released state in which the connection between the first split transmission shaft and the second split transmission shaft is released is provided. When the free end side frame portion is separated from the base end side frame portion, the state of the joint member is changed to the released state, and the second split transmission shaft is separated from the first split transmission shaft. is configured to
According to this configuration, the support frame can be utilized for the transmission case that accommodates the power transmission device. In the connection structure in which the first split transmission shaft and the second split transmission shaft are connected by a joint member, it is not necessary to fill lubricating oil, and the free end side frame portion can be separated from the base end side frame portion. Since the lubricating oil does not leak out, it is possible to use the support frame as a transmission case and to simplify the structure for separating the free end side frame portion.
Another combine according to the invention comprises:
A pre-harvesting processing unit having a harvesting unit for cutting planted grain culms and harvesting planted grain culms; a threshing device that has a threshing feed chain to which harvested grain culms are supplied by a conveying device and performs threshing processing of the harvested grain culms, and the feeding and conveying device endlessly rotates the base side portion of the harvested grain culms. A stem nipping and conveying part for nipping and conveying by a moving stem pedestal conveying body and a stem pedestal conveying guide rod; A stop conveying portion and a support frame for supporting the stem conveying guide rod and the tip conveying guide rod are provided, and the support frame is divided into a base end side frame portion and a free end side frame portion. a connecting mechanism for detachably connecting the free end frame portion to the base end frame portion; The feeding and conveying device is provided with a relay conveying portion that is supported by the free end side frame portion and conveys the harvested grain culms from the harvesting portion toward the stock base clamping conveying portion and the tip locking conveying portion, A power transmission device is provided inside the support frame and transmits power to the relay conveying unit. A two-rotation transmission shaft is provided, and when the free end frame portion is separated from the base end frame portion, the first rotation transmission shaft and the second rotation transmission shaft form a bevel gear on the first rotation transmission shaft side. and the bevel gear on the side of the second rotation transmission shaft .
According to this configuration, the support frame can be utilized for the transmission case that accommodates the power transmission device. Since the bevel gear mechanism is used as the joint means for separating the first rotary transmission shaft and the second rotary transmission shaft, the structure for separating the free end frame portion can be simplified.

In the present invention,
The coupling mechanism includes a positioning mechanism for positioning the free-end frame portion with respect to the proximal-side frame portion, and a lock mechanism for fixing the free-end-side frame portion to the proximal-side frame portion. It is preferable to have

According to this configuration, the free end frame portion can be fixed to the proximal frame portion by the locking mechanism in a state where the free end frame portion is positioned with respect to the proximal frame portion by the positioning mechanism. The stem base transport guide rod and the tip transport guide rod are attached to the supply transport device in a state in which the positioning of the rod with respect to the endless rotating stem base transport body and the positioning of the tip transport guide rod with the endless tip transport body are performed by the positioning mechanism. Since it can be returned, no special effort is required for alignment.

In the present invention,
It is preferable that the positioning mechanism includes a positioning pin and a pin hole into which the positioning pin is engaged and disengaged.

According to this configuration, the positioning mechanism can be activated by a simple operation of engaging the positioning pin with the pin hole.

In the present invention,
The lock mechanism has a receiving portion, a headed pin extending from the receiving portion, and a pin hole larger than the head of the headed pin, and the headed pin is passed through the pin hole. and a contact portion that faces the receiving portion in a state in which the contact portion is in contact with the receiving portion. A wedge member is provided, and the wedge member is preferably provided so as to be capable of switching between a state of being inserted into the gap and a state of being removed from the gap.

According to this configuration, by simply fitting the wedge member into the gap between the head portion of the headed pin and the abutment portion, the abutment portion is brought into contact with the receiving portion by the wedge member, and the free end side frame portion is the base. Since it can be firmly fixed to the end-side frame portion, the stock base conveying guide rod and the tip conveying guide rod can be easily attached back to the supply conveying device in a state of being firmly supported by the support frame.

In the present invention,
It is preferable that the headed pin extends laterally outward from the receiving portion, and the abutting portion is configured to abut against the receiving portion from the laterally outward side of the fuselage.

According to this configuration, the operation of engaging and disengaging the headed pin with respect to the pin hole and the operation of switching the attitude of the wedge member can be easily performed from the lateral outside of the machine body, so that the lock mechanism can be easily operated.

In the present invention,
The lock mechanism is preferably a snap lock.

According to this configuration, the snap lock can be manually operated to fix the free-end frame portion to the base-end frame portion or release the fixation, so there is no need to prepare a special tool.

In the present invention,
The lock mechanism is preferably a bolt with a knob.

According to this configuration, the bolt with knob can be manually operated to fix the free end side frame portion to the base end side frame portion or to release the fixation, so there is no need to prepare a special tool.

In the present invention,
Preferably, the support frame has a vertical frame portion extending in the vertical direction of the machine body, and the support frame is divided into the proximal side frame portion and the free end side frame portion at the vertical frame portion. be.

According to this configuration, since the free end frame portion is separated downward from the base end frame portion, the weight of the free end frame portion is added to the operating force for separating the free end frame portion from the base end frame portion. available and easy to separate the free end frame portion from the proximal end frame portion.

In the present invention,
The support frame includes a lateral frame portion extending in the lateral width direction of the fuselage and a vertical frame portion extending downward from an end portion of the lateral frame portion. and the free end side frame portion.

According to this configuration, it is easy to configure the free-end frame portion to be temporarily supported by the proximal-side frame portion. The coupling mechanism can be operated with a light operating force, and the free end side frame portion can be easily attached to and detached from the base end side frame portion.

It is a left view which shows the whole combine. FIG. 4 is a plan view showing a reaping unit and a supply/conveyor; It is a rear view which shows the support structure of a stem base conveyance guide rod and a tip conveyance guide rod. It is a left view which shows a connection mechanism and a lock mechanism. FIG. 4 is a cross-sectional view showing a connecting mechanism and a locking mechanism; FIG. 4 is a left side view showing the connecting mechanism and the locking mechanism in a state where the free end frame is separated from the base end frame. FIG. 11 is a plan view showing a pre-harvest processor comprising another embodiment; Fig. 10 is a rear view showing a support structure for a stem transportation guide rod and a tip transportation guide rod of a pre-reaping processing unit provided with another embodiment; Fig. 10 is a plan view showing a support structure for a stem base conveying guide rod and a tip conveying guide rod of a pre-reaping processing unit provided with another embodiment; It is a rear view showing a connecting mechanism and a positioning mechanism. It is a sectional view showing a power transmission device provided with another embodiment.

An embodiment, which is an example of the present invention, will be described below with reference to the drawings.
In the following description, regarding the running machine body of the combine, the direction of arrow F shown in FIG. , the direction toward the front side of the page is defined as "left side of the machine", and the direction toward the back side of the page is defined as "right side of the machine".

[Overall of a combine harvester]
A combine harvester has a body frame 1 formed by connecting a plurality of steel materials such as square pipes, and a traveling body having a pair of left and right crawler type traveling devices 2 provided at the bottom of the body frame 1 . A driving section 4 having a driver's seat 3 is provided on one lateral side of the front part of the traveling machine body. A pre-harvesting processing unit 5 for reaping planted grain culms of rice or wheat and conveying the harvested grain culms rearward is provided on the lateral side portion opposite to the driving unit side in the front part of the traveling machine body. The pre-reaping processing unit 5 is provided so as to be able to be moved up and down in a lowered working state and a raised non-working state. A threshing device 6 is provided at the rear part of the traveling body. The threshing device 6 has a threshing feed chain 7 to which the harvested grain culm is supplied by the pre-harvesting processing unit 5, and the side portion of the stock base of the harvested grain culm is pinched and conveyed by the threshing feed chain 7, and the tip side of the harvested grain culm is conveyed. A threshing process is performed by a threshing drum (not shown) that is inserted into a threshing chamber (not shown) and rotates on the tip side, and a sorting process is performed to sort out the grains obtained by the threshing process and dust such as cut straws. . A grain tank 8 for collecting and storing grains obtained by the threshing device 6 is provided on a lateral side portion of the rear portion of the traveling machine body opposite to the threshing device side. A grain discharging device 9 for discharging grains from the grain tank 8 is connected to the rear portion of the grain tank 8 .

[Configuration of reaping pretreatment unit]
As shown in FIG. 1, the pre-reaping processing unit 5 includes a reaping unit 5A provided at the front of the pre-reaping processing unit 5, and a feeding and conveying device 5B provided at the rear of the pre-reaping processing unit 5. I have.

As shown in FIGS. 1 and 2, the reaping part 5A has two lifting paths 10 for introducing the planted grain culms of two planting lines separately by running the machine body, and each lifting path 10 is provided with a lifting path. A lifting device 11 for lifting the planted grain culm introduced in 10, and a hair clipper-shaped reaping device 12 provided behind the lifting device 11 for cutting the base of two rows of the planted grain culm. I have it. At the rear of each raising device 11, an endless rotary raking body 13 is provided for raking and supplying the side portion of the root of the planted culm to be raised to the reaping device 12. As shown in FIG.

As shown in FIG. 2, the feeding and conveying device 5B is rotatably provided above the reaping device 12 so as to correspond to the end portion of each endless rotary raking member 13, and is arranged to move the side portion of the base of the harvested grain culm. A rotary wheel 15 raking into a merging point 14 at the rear of the reaper 12, and a merging that conveys two grain harvested culms raked into the merging point 14 rearward and supplies them to the starting end of the threshing feed chain 7. A transport unit 16 is provided.

As shown in FIG. 2 , the merging/conveying section 16 rearwardly moves the base side portion of the reaping grain culms that have been raked into the confluence point 14 by means of an endless rotating stock base conveying body 17 and a base conveying guide rod 18 . A stock pinching and conveying part 16A that pinches and conveys and supplies it to the starting end of the threshing feed chain 7, and an endless tip conveying body 19 and a tip conveying guide rod that transfer the tip side part of the reaping grain culm that has been rake into the confluence point 14. 20 and a tip locking conveying portion 16B that locks and conveys toward the threshing feed chain 7. When the stock holding and conveying unit 16A feeds the side portion of the base of the harvested grain culm to the threshing feed chain 7, the tip locking and conveying portion 16B keeps the tip side portion of the harvested grain culm inside the body of the threshing feed chain 7. The reaping grain culms supplied to the threshing feed chain 7 are pulled in and the posture is changed to a laterally falling posture. In this embodiment, the endless rotary stock base carrier 17 is composed of an endless rotary chain having links with projections. The endless tip conveying body 19 is composed of an endless rotating chain having locking arms.

[Structure of stem base conveying guide rod and tip conveying guide rod]
As shown in FIG. 2, the supply and transport device 5B is provided with a support frame 21 that supports the stem transport guide rod 18 and the tip transport guide rod 20 . The support frame 21 extends laterally outside the transport path 16R (see FIG. 3) from the preprocessing section frame 22 (see FIG. 1) through above the transport path 16R (see FIG. 3) in the merging transport section 16. As shown in FIG. The extension end side portion of the support frame 21 is a free end side portion to which the member supporting the support frame 21 is not connected.
In this embodiment, the support frame 21 is made of a circular pipe material, but a square pipe material, an angle member, or the like can also be used.

As shown in FIGS. 3, 4 and 6, the support frame 21 is divided into a proximal frame portion 21A and a free end frame portion 21B. The free end side frame portion 21B is configured to be detachably connected to the base end side frame portion 21A by a connecting mechanism 23 . The stock base conveying guide rod 18 and the tip conveying guide rod 20 are supported by the free end frame portion 21B. When removing the clogging of harvested grain culms in the merging transport section 16 (supply transport device 5B), when the coupling mechanism 23 is operated to the release side to separate the free end side frame section 21B from the base end side frame section 21A, The stock base conveying guide rod 18 and the tip conveying guide rod 20 are separated from the base end frame portion 21A together with the free end side frame portion 21B at once, and the stock base conveying guide rod 18 and the tip conveying guide rod 20 are separated at once to the joining conveying portion. 16 (supply conveying device 5B).

The support of the stock base conveying guide rod 18 and the tip conveying guide rod 20 to the free end side frame portion 21B is performed based on the support structure shown in FIG.

As shown in FIGS. 2 and 3, a first support portion 24 that supports the tip conveying guide rod 20 and a second support portion 25 that supports the stock base conveying guide rod 18 are provided below the free end frame portion 21B. is provided. The second support portion 25 is provided at a position lower than the first support portion 24 .
The tip conveying guide rod 20 is provided with a tip rod connecting portion 20a extending from an intermediate portion in the front-rear direction of the tip conveying guide rod 20 to the side opposite to the endless tip conveying body side, and the tip rod connecting portion 20a is the first support. It is connected to the section 24 . The connection between the tip rod connection portion 20a and the first support portion 24 is performed by a connection bolt. The stock base conveying guide rod 18 is provided with a stock base connecting portion 18a extending upward from an intermediate portion in the front-rear direction of the stock base conveying guide rod 18 to the side opposite to the endless rotating stock base conveying body side and upward. The upper portion of the base connecting portion 18 a is connected to the second support portion 25 . The connection between the stock lever connection portion 18a and the second support portion 25 is performed by welding.

As shown in FIG. 3, the support frame 21 is provided with a vertical frame portion 21C extending in the vertical direction of the machine body. 21B. When separating the free end side frame portion 21B from the base end side frame portion 21A, the weight of the free end side frame portion 21B can be used for separation.

[Coupling mechanism]
A connection mechanism 23 for detachably connecting the free-end frame portion 21B to the proximal-side frame portion 21A is, as shown in FIGS. A connecting member 26, a free end side connecting member 27 connected to the upper portion of the free end side frame portion 21B, and a locking mechanism 30 having two connecting pins 31 are provided.

In the connecting mechanism 23, as shown in FIGS. 3, 4 and 5, when the free end side connecting member 27 is opposed to the base end side connecting member 26 and the lock mechanism 30 is operated to the active state, the free end side is closed. The connecting member 27 is tightened and connected to the proximal side connecting member 26 by the locking mechanism 30, and the free end side frame portion 21B is fixed to the proximal side frame portion 21A by the locking mechanism 30. As shown in FIG. As a result, the connecting mechanism 23 is brought into an operational state so as to connect the free end frame portion 21B to the base end frame portion 21A.

In the connecting mechanism 23, when the locking mechanism 30 is operated to the unlocked state, the tightening connection of the free end side connecting member 27 to the base end side connecting member 26 by the locking mechanism 30 is released, and the free end side frame by the locking mechanism 30 is released. The fixation of the portion 21B to the proximal side frame portion 21A is released. As a result, the coupling mechanism 23 is brought into a released state so as to allow the free end side coupling member 27 to be separated from the base end side coupling member 26 and the free end side frame portion 21B to be separated from the base end side frame portion 21A. Become.

The coupling mechanism 23 is provided with a locking mechanism 30 and a positioning mechanism 40 for positioning the free end frame portion 21B with respect to the base end frame portion 21A. By operating the positioning mechanism 40 and the locking mechanism 30, the free-end frame portion 21B is moved to the proximal-side frame portion in a state where the free-end frame portion 21B is positioned with respect to the proximal-side frame portion 21A by the positioning mechanism 40. 21A by a lock mechanism 30. As shown in FIG. Positioning of the stock base conveying guide rod 18 with respect to the endless rotating stock base conveying body 17 and the tip conveying guide can be achieved without special effort for aligning the free end side frame portion 21B with the base end side frame portion 21A. The stem base transport guide rod 18 and the tip transport guide rod 20 are installed in the merging transport section 16 (supply transport device 5B) in a state where the positioning of the rod 20 with respect to the endless tip transport body 19 is performed by the positioning mechanism 40 .

[Positioning mechanism]
As shown in FIGS. 4, 5 and 6, the positioning mechanism 40 includes two positioning pins 31 forming two connecting pins 31 and two pin holes provided in the free end side connecting member 27. a portion 32; As shown in FIGS. 5 and 6, the two positioning pins 31 extend from portions of the proximal side connecting member 26 that are separated on both lateral sides of the axial center X of the proximal side frame portion 21A to free ends. It protrudes toward the side connecting member 27 . As shown in FIGS. 4 and 5, the two pin holes 32 engage the two positioning pins 31 separately when the free end side connecting member 27 is engaged with the base end side connecting member 26. It is provided on the free end side connecting member 27 in an arranged state.

In the positioning mechanism 40, as shown in FIGS. 4 and 5, the two positioning pins 31 are inserted through the pin holes 32, so that the base end frame portion 21A is positioned along the axis X direction. The positional deviation of the free end side connecting member 27 with respect to the base end side connecting member 26 is suppressed by the two positioning pins 31, and the free end side connection in the direction along the direction Y (see FIG. 5) perpendicular to the axis X is achieved. Positional deviation of the member 27 with respect to the base end side connecting member 26 is suppressed by the two positioning pins 31 . As a result, the positioning mechanism 40 is activated, and positions the free-end frame portion 21B with respect to the base-end frame portion 21A in the direction along the direction of the axis X, Positioning of the free end side frame portion 21B with respect to the base end side frame portion 21A in the direction along the .

[Lock mechanism]
As shown in FIGS. 4, 5 and 6, the locking mechanism 30 is provided on a receiving portion 33 provided on the base end side connecting member 26 and on the free end side connecting member 27 in a state of face contact with the receiving portion 33. two headed pins 31 constituting the two connecting pins 31; two pin holes 32 provided in the contact portion 34; and a wedge member 35 (manual operation tool) located on the side opposite to the receiving portion side. The two headed pins 31 extend from the receiving portion 33 toward the contact portion 34 . The size of the two pin holes 32 is made larger than the head 31 a of the headed pin 31 so that the head 31 a can be inserted into the pin hole 32 . As shown in FIG. 3, the headed pin 31 extends laterally outward from the receiving portion 33, and the abutting portion 34 abuts against the receiving portion 33 from the laterally outward side of the fuselage. It is configured. The operation of bringing the contact portion 34 into contact with the receiving portion 33 and the operation of changing the attitude of the wedge member 35 can be easily performed from the lateral outside of the fuselage.

As shown in FIGS. 4, 5 and 6, the wedge member 35 is provided between the contact portion 34 contacting the receiving portion 33 and the head portion 31a of the headed pin 31 inserted through the pin hole portion 32. The posture can be changed between a state of being inserted into the gap (operating state) and a state of being removed from the gap between the contact portion 34 and the head portion 31a (action released). As shown in FIGS. 4 and 6, one end of the wedge member 35 is supported by the contact portion 34 via a support pin 36 . The wedge member 35 is supported so as to change its posture between an action state and an action release state by being pivoted about the support pin 36 as a pivot point.

In the lock mechanism 30, as shown in FIGS. 3, 4 and 5, when the free end side connecting member 27 is brought into contact with the base end side connecting member 26, the contact portion 34 is brought into contact with the receiving portion 33, Further, the headed pin 31 is inserted through the pin hole 32 and the head 31a of the headed pin 31 protrudes from the contact portion 34 to the side opposite to the receiving portion side. Next, as shown in FIGS. 4 and 5, the wedge member 35 is pivoted around the support pin 36 to change its posture from the action release state to the action state. Then, the wedge member 35 is fitted into the gap between the contact portion 34 and the head portion 31a of the headed pin 31, and the wedge member 35 presses the contact portion 34 with the head portion 31a as a reaction point. The contact portion 34 is pressed against the receiving portion 33 , and the free end side connecting member 27 is pressed against the base end side connecting member 26 . As a result, the lock mechanism 30 is put into an active state and fixes the free end frame portion 21B to the base end frame portion 21A. As shown in FIGS. 4 and 5, a detachable retaining pin 37 is attached to the wedge member 35 and the free end side connecting member 27 in the active state, whereby the wedge member 35 is retained in the active state by the retaining pin 37. held in position.

In the lock mechanism 30, when the wedge member 35 is operated to change its posture to the released state, the wedge member 35 is removed from the gap between the contact portion 34 and the head portion 31a, and the contact portion 34 is pressed against the receiving portion 33. As a result, the free end side connecting member 27 is released from the base end side connecting member 26 and the headed pin 31 can be removed from the pin hole portion 32 . As a result, the lock mechanism 30 is in the released state, releasing the free end frame portion 21B from the base end frame portion 21A and separating the free end frame portion 21B from the base end frame portion 21A. enable

When the locking mechanism 30 is activated and the free end side connecting member 27 is fixed to the base end side connecting member 26, the free end side connecting member 27 constituting the positioning mechanism 40 is thus connected to the two positioning pins. 31, and the positioning pin 31 is in a state of firm positioning action.
The locking mechanism 30 fixes the free end frame portion 21B to the base end frame portion 21A, and at the same time, the positioning mechanism 40 positions the free end frame portion 21B to the base end frame portion 21A.

[Another embodiment 1]
FIG. 7 is a plan view showing a pre-reaping processor 5 provided with another embodiment.
As shown in FIG. 7, the reaping part 5A in the pre-reaping treatment part 5 provided with another embodiment has three lifting paths 10 for respectively introducing planted grain culms of three planting rows by traveling of the machine body, and a pulling device 11 provided on each pulling path 10 . Behind the raising device 11, a clipper-shaped reaper (not shown) is provided for cutting the roots of three planted grain stalks that are being raised and processed. At the rear of each raising device 11, an endless rotary raking body 13 is provided for raking and supplying the root side portion of the planted grain culm to be raised to the reaping device.

As shown in FIG. 7, the feeding and conveying device 5B in the pre-harvesting processing unit 5 having another embodiment is rotatably provided corresponding to the terminal end of each endless rotary rake body 13, and the harvested grain culms A rotating wheel 15 that rakes the side of the base of the plant to the rear of the reaper, and one row of harvested grain culm from the leftmost rotating wheel 15 of the three rotating wheels 15 is conveyed to the merging point 14. The left intermediate conveying unit 41 merges harvested grain culms from the rightmost rotating wheel 15 of the three rotating wheels 15 and harvested grain culms from the central rotating wheel 15 of the three rotating wheels 15 . The right relay conveying part 41 that conveys to the point 14, and the merging conveying part 16 that conveys the three harvested grain culms conveyed to the merging point 14 backward and supplies them to the starting end of the threshing feed chain 7. I have.

The merging transport section 16 has the same configuration as the merging transport section 16 shown in FIG. As shown in FIG. 7 , the merging/conveying section 16 nips and conveys the side portion of the harvested grain culms transported to the merging point 14 rearward and feeds them to the starting end portion of the threshing feed chain 7 . 16A, and a tip locking/conveying part 16B that locks and conveys the tip side portion of the harvested grain culms conveyed to the merging point 14 toward the threshing feed chain 7 . In the present embodiment, the endless tip conveying body 19 in the tip locking conveying portion 16B of the merging conveying portion 16 and the endless tip conveying body constituting the tip locking conveying portion in the right relay conveying portion 42 are It is composed of the same endless tip conveying body. The endless tip conveying body 19 of the merging conveying section 16 and the endless tip conveying body of the right intermediary conveying section 42 may be constituted by separate endless tip conveying bodies.

[Structure of stem base conveying guide rod and tip conveying guide rod]
As shown in FIG. 7, the feed and transport device 5B supports a stem transport guide rod 18 provided in the stem clamping transport section 16A and a tip transport guide rod 20 equipped in the tip locking transport section 16B. A support frame 21 is provided for The support frame 21 extends laterally outside the transport path 16R (see FIG. 8) from the preprocessing section frame 22 (see FIG. 1) through above the transport path 16R (see FIG. 8) in the merging transport section 16. As shown in FIG. The extension end side portion of the support frame 21 is a free end side portion to which the member supporting the support frame 21 is not connected. The support frame 21 is composed of a circular tubular member.

As shown in FIG. 8, the support frame 21 is divided into a base end frame portion 21A and a free end frame portion 21B. The free end frame portion 21B is configured to be detachably connected to the base end frame portion 21A by a connecting mechanism 55. As shown in FIG. The stock base conveying guide rod 18 and the tip conveying guide rod 20 are supported by the free end frame portion 21B. It separates from the part 21A and is taken out from the merging transport part 16 .

The support of the stock base conveying guide rod 18 and the tip conveying guide rod 20 to the free end side frame portion 21B is performed based on the support structure shown in FIGS.
As shown in FIGS. 8 and 9, the stock base conveying guide rod 18 is provided with a stock base conveying guide rod 18 having a stock base connecting portion 18a that extends upward from the intermediate portion of the stock base conveying guide rod 18 in the front-rear direction. The upper portion of the stock lever connection portion 18a is connected by a connection bolt to a first support portion 50a positioned at the rear lower portion of the support portion 50 provided at the lower portion of the free end side frame portion 21B. The tip conveying guide rod 20 has a first tip rod connecting portion 20b formed at the front end portion of the tip conveying guide rod 20, and the tip conveying guide rod 20 is opposite to the endless tip conveying body side from the intermediate portion in the front-rear direction. A second tip rod connecting portion 20c extending to the side is provided. The first tip rod connection portion 20b is connected to the second support portion 50b positioned at the front portion of the support portion 50 by a connection bolt. The second rod connecting portion 20c is connected to the third supporting portion 50c located in the intermediate portion of the supporting portion 50 in the front-rear direction by a connecting bolt.

The support portion 50 of the free end frame portion 21B includes a plate member 51 connected to the lower portion of the free end frame portion 21B and a left relay transfer portion 41 supported by the lower portion of the free end frame portion 21b. and the case 41a. The plate member 51 forms a first support portion 50a and a third support portion 50c. A second support portion 50b is formed by the transport case 41a,

[Coupling mechanism]
As shown in FIG. 8, the support frame 21 includes a horizontal frame portion 21D extending in the horizontal width direction of the machine body above the transport path 16R of the merging transport portion 16, and a vertical frame portion extending downward from the end of the horizontal frame portion 21D. 21C and. The support frame 21 is divided into a proximal frame portion 21A and a free end frame portion 21B at a horizontal frame portion 21D.

As shown in FIGS. 8 and 10, the connecting mechanism 55 for detachably connecting the free-end frame portion 21B to the base-end frame portion 21A is provided at the upper end of the free-end frame portion 21B. 56, and a lock mechanism 60 provided over the free end frame portion 21B and the proximal end frame portion 21A. As shown in FIG. 8, the connecting body portion 56 is configured to be externally fittable on the end portion 57 of the proximal side frame portion 21A.

In the connecting mechanism 55, as shown in FIG. 8, when the connecting body portion 56 is fitted onto the end portion 57 of the proximal side frame portion 21A and the lock mechanism 60 is operated to the active state, the connecting body portion 56 is closed. is tightened and connected to the base end frame portion 21A by the lock mechanism 60, and the free end frame portion 21B is fixed to the base end frame portion 21A by the lock mechanism 60. As shown in FIG. As a result, the connecting mechanism 55 is brought into an operational state so as to connect the free end frame portion 21B to the base end frame portion 21A.

When connecting the free-end frame portion 21B to the proximal-side frame portion 21A, the free-end frame portion 21B is connected to the proximal-side frame portion 21A by fitting the connector portion 56 onto the end portion 57 of the proximal-side frame portion 21A. The operation force for supporting the free end side frame portion 21B so that the portion 21A is temporarily fixed and supported so that the lock mechanism 60 can be operated to the operating state can be lightened.

In the connecting mechanism 55, when the locking mechanism 60 is operated to the released state, the tightening connection of the connecting body portion 56 to the proximal side frame portion 21A by the locking mechanism 60 is released, and the free end side frame portion 21B by the locking mechanism 60 is released. is released from the base end side frame portion 21A. As a result, the coupling mechanism 55 is released so as to allow the free end frame portion 21B to be separated from the base end frame portion 21A.

In this embodiment, the lock mechanism 60 is configured by a snap lock provided over the free end frame portion 21B and the proximal end frame portion 21A. Instead of this, the lock mechanism 60 is configured by a bolt with a knob mounted across the free-end frame portion 21B and the proximal-side frame portion 21A to tighten and connect the free-end-side frame portion 21B and the proximal-side frame portion 21A. may

[Positioning mechanism]
The connecting mechanism 55 is provided with a locking mechanism 60 and a positioning mechanism 61 for positioning the free end frame portion 21B with respect to the base end frame portion 21A. The positioning mechanism 61, as shown in FIG. 10, includes a positioning pin 62 and a pin hole 63 into which the positioning pin 62 is engaged and disengaged.

More specifically, as shown in FIG. 10, the free end frame portion 21B and the base end frame portion 21A are each provided with a pin locking portion 64 having a pin hole portion 63. As shown in FIG. One positioning pin 62 of the two positioning pins 62 connected by the connecting member 65 is engaged with the pin hole portion 63 of the free end side frame portion 21B, and the other of the two positioning pins 62 is positioned. When the pin 62 is engaged with the pin hole portion 63 of the base end frame portion 21A, the free end frame portion 21B and the base end frame portion 21A rotate about the axis Z of the base end frame portion 21A. are restrained by the two positioning pins 62 and the connecting member 65 . In addition, the two positioning pins 62 and the connecting member 65 restrain relative movement between the free-end frame portion 21B and the base-end frame portion 21A in the direction along the axis Z. As shown in FIG. As a result, the positioning mechanism 61 is put into an active state, and positions the free end side frame portion 21B with respect to the base end side frame portion 21A in the rotational direction about the axis Z, and in the direction along the axis Z The free end frame portion 21B is positioned with respect to the base end frame portion 21A.

As shown in FIGS. 7 and 8, the left relay conveying portion 41 is supported under the free end frame portion 21B. A power transmission device 70 for transmitting power from the engine to the relay transport section 41 is installed inside the support frame 21 . The power transmission device 70 includes a rotary transmission shaft 71 extending between the inside of the base end frame portion 21A and the inside of the free end frame portion 21B. The rotation transmission shaft 71 includes a first split transmission shaft body 71a and a second split transmission shaft body located on the same axis as the first split transmission shaft body 71a and on the lower side in the transmission direction than the first split transmission shaft body 71a. 71b. The first split transmission shaft 71 a and the second split transmission shaft 71 b are connected by a joint member 72 .

When the free end side frame portion 21B is separated from the base end side frame portion 21A, the second split transmission shaft 71b moves along with the free end side frame portion 21b, and the joint member 72 moves along with the first split transmission shaft 71a. and the second split transmission shaft 71b to release the coupling between the first split transmission shaft 71a and the second split transmission shaft 71b. The split transmission shaft 71b is separated. When the free end frame portion 21B is connected to the base end frame portion 21A, the second split transmission shaft 71b is moved toward the first split transmission shaft 71A by the free end frame portion 21B, and the joint member 72 is fitted over the first split transmission shaft 71a and the second split transmission shaft 71b to change the state to a connected state in which the first split transmission shaft 71a and the second split transmission shaft 71b are interlocked, and the first split A joint member 72 connects the transmission shaft 71a and the second divided transmission shaft 71b.

Although the support frame 21 is utilized in the transmission case that houses the power transmission device 70, there is no special effort required to switch the first split transmission shaft 71a and the second split transmission shaft 71b between the connected state and the separated state. The free end frame portion 21B can be separated from and connected to the base end frame portion 21A. In addition, the base end frame portion 21A is not filled with lubricating oil, and the free end frame portion 21B is separated from the base end frame portion 21A without leakage of the lubricating oil from the base end frame portion 21A. be able to.

[Another embodiment 2]
FIG. 11 is a cross-sectional view showing a power transmission device 70 provided with another embodiment. As shown in FIG. 11, a power transmission device 70 comprising another embodiment comprises a first rotary transmission shaft 74 and a second rotary transmission shaft 75 interlocked by a bevel gear mechanism 73 housed in a support frame 21. ing. The bevel gear mechanism 73 includes a first bevel gear 73a provided at the end of the first rotation transmission shaft 74, and a second bevel gear 73b provided at the end of the second rotation transmission shaft 75 in a state of meshing with the first bevel gear 73a. , is equipped with In this embodiment, the bevel gear mechanism 73 is housed in the corner where the horizontal frame portion 21D and the vertical frame portion 21C of the support frame 21 are connected, but this is not restrictive. For example, it may be housed in the horizontal frame portion 21D or the vertical frame portion 21C.

When the free-end frame portion 21B is separated from the proximal-side frame portion 21A, the second bevel gear 73b moves along with the free-end frame portion 21B and separates from the first bevel gear 73a, thereby connecting the first rotary transmission shaft 74 and the second bevel gear 73b. The second rotary transmission shaft 75 is separated between the first rotary transmission shaft side bevel gear (first bevel gear 73a) and the second rotary transmission shaft side bevel gear (second bevel gear 73b). When the free-end frame portion 21B is connected to the proximal-side frame portion 21A, the bevel gear (second bevel gear 73b) on the second rotation transmission shaft side moves along with the free-end frame portion 21B to move the first rotation transmission shaft. side bevel gear (first bevel gear 73a), and the first rotary transmission shaft 74 and the second rotary transmission shaft 75 mesh with the bevel gear (first bevel gear 73a) on the first rotary transmission shaft side and the bevel gear on the second rotary transmission shaft side. (second bevel gear 7b).

[Another embodiment 3]
In the above-described embodiment, the wedge member 35 adopts a configuration supported by the contact portion 34, but is not limited to this. For example, it may adopt a configuration in which it is supported by the receiving portion 33 . Further, a wedge member that changes the posture between the active state and the active state by attaching and detaching may be employed.

[Another embodiment 4]
In the embodiment described above, an example in which the positioning mechanisms 40 and 61 are provided has been shown, but the positioning mechanisms 40 and 61 may not be provided.

[Another embodiment 5]
In the above-described embodiments, the supporting frame is divided in the vertically oriented frame portion, and the wedge-type locking mechanism provided with the wedge member is adopted. Although an example employing a tightening-type locking mechanism has been shown, the present invention is not limited to this. A wedge-type locking mechanism may be employed in the support frame divided at the horizontal frame portion, and a tightening-type locking mechanism may be adopted in the support frame divided at the vertical frame portion.
Further, in the above-described embodiments, in the hollow support frame that does not incorporate the power transmission device, the support frame is divided at the vertical frame portion and a wedge-type locking mechanism is employed. In the die support frame, an example has been shown in which the support frame is divided at the horizontal frame portion and a tightening-type locking mechanism is employed, but the present invention is not limited to this. For example, in the hollow support frame, the support frame is divided at the horizontal frame part and a wedge-type locking mechanism is adopted; Any combination of a support frame, a split position, a wedge-type locking mechanism, and a tightening-type locking mechanism, such as a locking mechanism, may be used.

INDUSTRIAL APPLICABILITY The present invention can be applied to a combine having a number of cutting rows other than two or three.

5 Harvesting pretreatment unit 5A Reaping unit 5B Feeding and conveying device 6 Threshing device 7 Threshing feed chain 16A Stump base pinching and conveying unit 16B Spearhead pinching and conveying unit 17 Endless rotating spearhead conveying body 18 Stump base conveying guide rod 19 Endless spearhead conveying Body 20 Tip Conveyance Guide Rod 21 Support Frame 21A Base End Frame 21B Free End Frame 21C Vertical Frame 21D Horizontal Frame 23 Connection Mechanism 30 Lock Mechanism 31 Connection Pin, Positioning Pin, Headed Pin 31a Head 32 Pin hole portion 33 Receiving portion 34 Contact portion 35 Wedge member (manual operation tool)
40 Positioning Mechanism 41 Relay Conveyor 55 Connecting Mechanism 60 Locking Mechanism 61 Positioning Mechanism 62 Positioning Pin 63 Pin Hole 70 Power Transmission Device 71 Rotational Transmission Shaft 71a First Split Transmission Shaft 71b Second Split Transmission Shaft 72 Joint Member 73 Bevel Mechanism 73a bevel gear (first bevel gear)
73b bevel gear (second bevel gear)
74 first rotary transmission shaft 75 second rotary transmission shaft

Claims (11)

a pre-harvesting processing unit having a harvesting unit that cuts the base of planted grain culms and harvests the planted grain culms, and a feeding and transporting device that transports the harvested grain culms harvested by the harvesting unit backward;
a threshing device having a threshing feed chain to which harvested grain culms are supplied by the feeding and conveying device and performing threshing processing of harvested grain culms;
The feeding and conveying device includes a stem clamping and conveying section for clamping and transporting the stem side portion of the harvested grain culm between the endless rotating stem stem transportation body and the stem root transportation guide rod, and an endless rotation for the tip side portion of the harvested grain culm. A tip locking and conveying part that is locked and conveyed by a moving tip conveying body and a tip conveying guide rod, and a support frame that supports the stem base conveying guide rod and the tip conveying guide rod are provided,
The support frame is divided into a base end frame portion and a free end frame portion,
a connecting mechanism for detachably connecting the free end frame portion to the base end frame portion;
The stock base conveying guide rod and the tip conveying guide rod are supported by the free end frame portion ,
The coupling mechanism is provided with a lock mechanism for fixing the free end frame portion to the base end frame portion,
The lock mechanism includes a receiving portion provided on the base end side frame portion, a contact portion provided on the free end side frame portion, an operating state in which the contact portion is pressed against the receiving portion, and the pressure contact. and a manual operating tool capable of changing the swinging posture in a released state for releasing the
The combine harvester in which the manual operation tool is supported by the contact portion . a pre-harvesting processing unit having a harvesting unit that cuts the base of planted grain culms and harvests the planted grain culms, and a feeding and transporting device that transports the harvested grain culms harvested by the harvesting unit backward;
a threshing device having a threshing feed chain to which harvested grain culms are supplied by the feeding and conveying device and performing threshing processing of harvested grain culms;
The feeding and conveying device includes a stem clamping and conveying section for clamping and transporting the stem side portion of the harvested grain culm between the endless rotating stem stem transportation body and the stem root transportation guide rod, and an endless rotation for the tip side portion of the harvested grain culm. A tip locking and conveying part that is locked and conveyed by a moving tip conveying body and a tip conveying guide rod, and a support frame that supports the stem base conveying guide rod and the tip conveying guide rod are provided,
The support frame is divided into a base end frame portion and a free end frame portion,
a connecting mechanism for detachably connecting the free end frame portion to the base end frame portion;
The stock base conveying guide rod and the tip conveying guide rod are supported by the free end frame portion,
The feeding and conveying device is provided with a relay conveying portion that is supported by the free end side frame portion and conveys the harvested grain culms from the harvesting portion toward the stock base clamping conveying portion and the tip locking conveying portion,
A power transmission device is provided inside the support frame and transmits power to the relay conveying unit,
The power transmission device includes a first split transmission shaft located on the upper side in the transmission direction inside the support frame, and a transmission further than the first split transmission shaft on the same axis as the first split transmission shaft. A rotational transmission shaft divided into a second divided transmission shaft located on the downstream side of the direction, a connection state in which the first divided transmission shaft and the second divided transmission shaft are connected, and the first divided transmission a joint member capable of changing its state to a released state for releasing the connection between the shaft and the second split transmission shaft;
When the free end side frame portion is separated from the base end side frame portion, the state of the joint member is changed to the released state so that the second split transmission shaft is separated from the first split transmission shaft. A combine that is configured for a pre-harvesting processing unit having a harvesting unit that cuts the base of planted grain culms and harvests the planted grain culms, and a feeding and transporting device that transports the harvested grain culms harvested by the harvesting unit backward;
a threshing device having a threshing feed chain to which harvested grain culms are supplied by the feeding and conveying device and performing threshing processing of harvested grain culms;
The feeding and conveying device includes a stem clamping and conveying section for clamping and transporting the stem side portion of the harvested grain culm between the endless rotating stem stem transportation body and the stem root transportation guide rod, and an endless rotation for the tip side portion of the harvested grain culm. A tip locking and conveying part that is locked and conveyed by a moving tip conveying body and a tip conveying guide rod, and a support frame that supports the stem base conveying guide rod and the tip conveying guide rod are provided,
The support frame is divided into a base end frame portion and a free end frame portion,
a connecting mechanism for detachably connecting the free end frame portion to the base end frame portion;
The stock base conveying guide rod and the tip conveying guide rod are supported by the free end frame portion,
The feeding and conveying device is provided with a relay conveying portion that is supported by the free end side frame portion and conveys the harvested grain culms from the harvesting portion toward the stock base clamping conveying portion and the tip locking conveying portion,
A power transmission device is provided inside the support frame and transmits power to the relay conveying unit,
The power transmission device includes a first rotary transmission shaft and a second rotary transmission shaft interlocked by a bevel gear mechanism accommodated in the support frame,
When the free end side frame portion is separated from the base end side frame portion, the first rotary transmission shaft and the second rotary transmission shaft are separated from each other by a bevel gear on the first rotary transmission shaft side and a bevel gear on the second rotary transmission shaft side. A combine that is configured to be separated between the bevel gears of The coupling mechanism includes a positioning mechanism for positioning the free-end frame portion with respect to the proximal-side frame portion, and a lock mechanism for fixing the free-end-side frame portion to the proximal-side frame portion. 4. The combine according to claim 2 or 3 . 5. The combine according to claim 4 , wherein the positioning mechanism comprises a positioning pin and a pin hole into which the positioning pin is engaged and disengaged. The lock mechanism has a receiving portion, a headed pin extending from the receiving portion, and a pin hole larger than the head of the headed pin, and the headed pin is passed through the pin hole. and a contact portion that faces the receiving portion in a state in which the contact portion is in contact with the receiving portion. and a wedge member,
6. The combine according to claim 4 or 5, wherein the wedge member is provided so as to be capable of switching between a state of being inserted into the gap and a state of being removed from the gap. The headed pin extends laterally outward from the receiving portion,
The combine according to claim 6 , wherein the contact portion is configured to contact the receiving portion from the lateral outer side of the machine body. The combine according to claim 4 or 5 , wherein said lock mechanism is a snap lock. The combine according to claim 4 or 5 , wherein said lock mechanism is a bolt with a knob. The support frame includes a vertically oriented frame portion extending in the vertical direction of the fuselage,
The combine according to any one of claims 1 to 9 , wherein the support frame is divided into the base end frame portion and the free end frame portion at the longitudinal frame portion. The support frame includes a horizontal frame portion extending in the width direction of the aircraft body, and a vertical frame portion extending downward from an end portion of the horizontal frame portion,
The combine according to any one of claims 1 to 9 , wherein the support frame is divided into the proximal side frame portion and the free end side frame portion at the lateral frame portion.

Images