JP2022101210A - combine - Google Patents

Abstract

To quickly remove a plant foot transport guide rod and a plant tip transport guide rod, in a combine having a plant foot grip transport part for transporting a plant foot side part of a mowing grain culm, and a plant tip lock transport part for locking and transporting a plant tip side part of the mowing grain culm.SOLUTION: A support frame 21 for supporting a plant foot transport guide rod 18 and a plant tip transport guide rod 20 is divided into a base-end side frame part 21A and a free-end side frame part 21B for supporting the plant foot transport guide rod 18 and the plant tip transport guide rod 20. A fixing part 43 for fixing a lower end part 26 to an upper end part 27 by pressing an abutment part 42 arranged at the upper end part 26 to a receiving part 41 arranged at the lower end part 27 in a direction along an approximation/approach separation direction A of the plant foot transport guide rod 18 with respect to an endless turning plant foot transport body 17 is arranged at a connection mechanism 40 for detachably connecting the upper end part 26 of the free-end side frame part 21B to the lower end part 27 of the base-end side frame part 21A.SELECTED DRAWING: Figure 4

Description

The present invention relates to a combine.

The combine includes a cutting unit that cuts the root of the planted culm and cuts the planted culm, and a pre-cutting processing unit that has a supply and transport device that transports the cut culm cut by the cutting unit to the rear. There is a threshing device having a threshing feed chain to which a threshing culm is supplied by a supply and transport device, and a threshing device for performing a threshing process of the threshing culm.
Examples of this type of combine are those shown in Patent Document 1. The combine shown in Patent Document 1 is provided with a cutting device for cutting the planted grain culm on the stock origin side and a pre-cutting processing unit having a supply device for transporting the harvested grain culm from the cutting device backward. A threshing device with a threshing feed chain to which the harvested culm is supplied is provided.
In this type of combine, the supply and transport device is equipped with a stock-holding and transporting unit that sandwiches and transports the stock-root side portion of the harvested grain culm by an endless rotating stock-source transporter and a stock-source transport guide rod, and a harvested grain culm. Some are provided with a tip locking transport portion for locking and transporting the tip side portion by an endless rotating tip transport body and a tip transport guide rod.

Japanese Unexamined Patent Publication No. 2010-263852

Conventionally, when the cut grain culm is clogged in the supply transport device, the stock root transport guide culm and the tip transport guide culm are removed from the supply transport device so that the clogged cut grain culm can be easily removed. It takes time to remove the stock root transport guide rod and the tip transport guide rod, such as the need to disconnect the connection with multiple connecting bolts that connect the tip transport guide rod to the support part, and the clogging of the cut grain culm is eliminated. It takes more time to do the work.

INDUSTRIAL APPLICABILITY According to the present invention, the stock root transport guide rod and the tip transport guide rod can be quickly removed from the supply transport device, and the harvested grain culm can be smoothly transported even if the grain culm holding reaction force applied to the stock root transport guide culm is strong. Provide the combine to be done.

The combine according to the present invention
A cutting section that cuts the root of the planted grain stalk and cuts the planted grain stalk, and a pre-cutting processing section having a supply transport device that transports the cut grain stalk cut by the cutting section to the rear, and the supply. It has a grain removal feed chain to which the harvested grain stalk is supplied by a transport device, and is provided with a grain removal device for performing a grain removal process of the harvested grain stalk. The stock root holding and transporting unit that is sandwiched and transported by the stock root transporting body and the stock root transport guide rod, and the tip clerk that locks and transports the tip side portion of the harvested grain stalk by the endless rotating tip transport body and the tip transport guide rod. A stop transport portion, a support frame for supporting the stock transfer guide rod and the tip transport guide rod are provided, and the support frame is divided into a base end side frame portion and a free end side frame portion. The stock origin transport guide rod and the tip transport guide rod are supported by the free end side frame portion, and the upper end portion of the free end side frame portion can be attached to and detached from the lower end portion of the base end side frame portion. A connecting mechanism for connecting is provided, and the connecting mechanism is provided with a receiving portion provided at the lower end portion and the stock provided at the upper end portion with respect to the receiving portion and the endless rotating stock source carrier. Proximity between a contacting portion that can be closely separated in a direction along the proximity separation direction of the original transport guide rod and the stock origin transport guide rod with respect to the endless rotating stock origin transport body with the contact portion close to the receiving portion. A fixing portion for fixing the upper end portion to the lower end portion by pressing the upper end portion in a direction along the separation direction is provided.

According to this configuration
The free end side frame portion can be removed from the base end side frame portion by releasing the connecting mechanism, and if the free end side frame portion is removed, both the stock origin transport guide rod and the tip transport guide rod are free ends. Since it is attached to the side frame part and detached from the base end side frame part, it is possible to quickly remove the stock origin transport guide rod and the tip transport guide rod from the supply transport device simply by removing the free end side frame portion from the base end side frame portion. can.

The contact part is applied to the receiving part by the grain culm holding reaction force applied to the stock transfer guide rod, and the free end side frame part is supported by the base end side frame part against the grain culm holding reaction force. Since the abutting portion is pressed against the receiving portion in the direction along the proximity and separation direction of the stock culm transport guide rod with respect to the endless rotating stock culm transport body, the free end side frame portion is based on the culm holding reaction force. The stock culm transport guide rod and the tip transport guide rod are firmly supported by the end side frame portion and firmly supported against the grain culm holding reaction force applied to the stock culm transport guide rod, and the stock culm pinching is hung on the stock culm transport guide rod. Even if the reaction force is strong, the cutting grain culm is accurately pinched by the stock root transport guide culm, and the cutting grain culm is accurately transported by the tip side transport guide culm, and the harvested grain culm is smoothly transported. Ru.

In the present invention
The receiving portion is a receiving surface in a direction orthogonal to the proximity separation direction, the contact portion is a contact surface in a direction orthogonal to the proximity separation direction, and the free end side frame portion has a contact surface. A vertical rod extending downward from the upper end portion and in a direction orthogonal to the proximity separation direction, and along the proximity separation direction from the lower portion of the vertically facing portion toward the endless rotating stock carrier. It is preferable that a support rod having a lateral rod portion extending in a direction is provided, and the stock transfer guide rod is supported at an end portion of the lateral rod portion opposite to the vertical rod portion.

According to this configuration, the pressing of the abutting portion against the receiving portion is performed by the receiving surface and the abutting surface in the direction orthogonal to the proximity separation direction of the stock origin transport guide rod against the endless rotating stock origin transport body. The end side frame part is more firmly supported by the base end side frame part against the grain holding reaction force. Further, since the stock origin transport guide rod is supported by the free end side frame portion via the support rod having the vertically oriented rod portion and the sideways oriented rod portion, the stock origin transport guide rod is endlessly rotated by the grain holding reaction force. Even if it shifts with respect to the original transport body, it does not easily shift in a direction different from the proximity and separation direction of the stock source transport guide rod with respect to the endless rotation stock origin transport body, and the grain holding reaction force applied to the stock origin transport guide rod is Even if it is strong, the cut grain stalk is smoothly sandwiched and transported by the endless rotating stock carrier and the stock transport guide rod.

In the present invention
In addition to the fixing portion, it is preferable that a locking portion for locking the upper end portion to the lower end portion is provided.

According to this configuration, the support of the free end side frame part by the base end side frame part against the pinching reaction force applied to the stock transfer guide culm is supported by the fixed part and the locking part different from the fixed part. Since it is carried out by support, even if the holding reaction force applied to the stock root transport guide rod is strong, the stock root transport guide rod and the tip transport guide rod are firmly supported and the harvested grain culm is smoothly transported.

In the present invention
It is preferable that the locking portion is provided at a position different from that of the fixing portion in the direction along the proximity separation direction.

According to this configuration, the support of the free end side frame part by the base end side frame part against the pinching reaction force applied to the stock transfer guide rod is supported by the fixed part and the locking part different from the fixed part. Not only the support is performed, but also the support by the fixed portion and the support by the locking portion are performed at different positions in the proximity separation direction of the stock source transport guide rod with respect to the endless rotation stock source transport body, so that the stock source transfer guide is performed. Even if the pinching reaction force applied to the rod is strong, the free end side frame portion is more firmly supported by the base end side frame portion, and the harvested grain stalk is smoothly conveyed.

In the present invention
It is preferable that the locking portion and the fixing portion face each other in the direction along the proximity separation direction.

According to this configuration
The free end side frame part is supported by the base end side frame part against the pinching reaction force applied to the stock transfer guide culm by the fixed part and the support by the locking part different from the fixed part. Not only that, the support by the fixed portion and the support by the locking portion are performed at different positions in the direction along the proximity separation direction of the stock origin transport guide culm with respect to the endless rotating stock origin transport body. Even if the pinching reaction force applied is strong, the free end side frame portion is more firmly supported by the base end side frame portion, and the cut grain culm is smoothly conveyed.

In the present invention
It is preferable that the locking portion includes a pin hole and a pin that can be engaged with and detached from the pin hole, and the pin is provided in a state of extending in a direction along the proximity separation direction.

According to this configuration, even if an operating force is generated in a direction in which the frame portion on the free end side is to be moved in a direction different from the proximity and separation direction of the stock origin transport guide culm, the locking portion is freed against this operating force. Since the end side frame part is firmly supported, the structure of the locking part is as simple as having a pin hole and a pin, and the stock root side transport guide culm and the tip side transport guide culm are accurate for the cut grain culm. The harvested culm is smoothly transported.

In the present invention
The distance from the stock transfer guide rod to the fixed portion and the distance from the stock transport guide rod to the locking portion are substantially the same in the direction along the axis of the stock transfer guide rod. Is suitable.

According to this configuration, the support of the free end side frame part by the base end side frame part against the pinching reaction force applied to the stock origin transport guide culm is supported by the fixed part and the locking part different from the fixed part. Not only is it performed by the support, but the support reaction force applied to the fixed part and the support reaction force applied to the locking part are almost the same, so the strength provided for the fixed part and the strength provided for the locking part are too much. While making no difference, the stock root transport guide rod can be supported more firmly against the pinching reaction force so that the harvested grain culm can be smoothly transported.

In the present invention
It is preferable that the free end side frame portion is provided with a handle capable of supporting the free end side frame portion.

According to this configuration, the free end side frame portion can be attached to and detached from the proximal end side frame portion while easily supporting the free end side frame portion by holding the handle, so that the free end side frame portion can be attached to the proximal end side frame portion. It is easy to attach / detach, and it is easy to attach / detach the stock root transport guide rod and the tip transport guide rod.

In the present invention
It is preferable that the handle extends from the upper end portion in a direction along the extending direction of the stock transfer guide rod.

According to this configuration, although the free end side frame portion is supported by holding the handle, the free end side frame portion can be supported in a well-balanced manner so that the stock transfer guide rod does not easily swing up and down. It is easier to attach / detach the stock root transport guide rod and the tip transport guide rod.

In the present invention
The harvesting portion is provided with a raising device for raising and processing the planted grain culm in a backward tilting posture, and the connecting mechanism is located behind the raising device and is fixed to the fixing portion. An operating lever that switches the unit between the working state and the released state is provided in a state in which it can rotate around the axis in the left-right direction, and the operating lever is swung downward to switch the fixed portion to the released state. It is preferable that it is configured as such.

According to this configuration, since it is easy to operate the operation lever from the lateral side of the machine, it is easier to lower the operation lever than to raise it, so the connecting mechanism can be switched between the working state and the disengaging state from the lateral side of the machine. easy. In addition, the dust that has been rolled up in front of the cutting portion can be prevented from being caught by the connecting mechanism by the raising device.

In the present invention
It is preferable that a first holder for holding the position of the operating lever with the fixed portion switched to the released state is provided.

According to this configuration, when the fixed portion is switched to the released state, the stock root transport guide rod and the tip transport guide rod can be taken out while the operating lever is not swayed by the first holder, so that the stock root transport guide rod can be taken out. And it is easy to take out the tip transport guide lever.

In the present invention
It is preferable that a second holder for holding the position of the operating lever whose fixed portion is switched to the operating state is provided.

According to this configuration, when the fixed portion is switched to the working state, the operating lever can be prevented from moving by the second holder, so that the harvesting work can be performed while firmly holding the fixed portion in the working state.

It is a left side view showing the whole combine. It is a top view which shows the pre-cutting processing part. It is a top view which shows the support structure of the stock origin transport guide rod, the tip transport guide rod, and the middle transport guide. It is a front view which shows the support structure, and the connection mechanism of the stock origin transport guide rod and the tip transport guide rod. It is a left side view which shows the fixed part. It is sectional drawing which shows the locking part and the fixing part. It is a top view which shows the stock origin transport guide rod, the tip transport guide rod, and the middle transport guide in a state where the free end side frame portion is removed from the base end side frame portion. It is a left side view which shows the connection mechanism.

Hereinafter, embodiments that are an example of the present invention will be described with reference to the drawings.
In the following description, regarding the traveling aircraft of the combine, the direction of the arrow F shown in FIG. 1 is "front of the aircraft", the direction of the arrow B is "rear of the aircraft", the direction of the arrow U is "upward of the aircraft", and the arrow D. The direction of is "downward of the aircraft", the direction of the front side of the paper is "left side of the aircraft", and the direction of the back side of the paper is "right side of the aircraft".

[Whole combine]
As shown in FIG. 1, the combine has a machine frame 1 formed 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 in the lower part of the machine frame 1. Equipped with an aircraft. A driving unit 4 having a driver's seat 3 is provided on one side of the front portion of the traveling machine. A pre-cutting processing unit 5 for cutting rice and wheat planted culms and transporting the harvested culms to the rear is provided on the lateral side of the front portion of the traveling machine, which is opposite to the driving unit side. The pre-cutting processing unit 5 is provided so as to be able to move up and down in the lowering work state and the ascending 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 cut grain culm is supplied by the pre-cutting processing unit 5, and the threshing feed chain 7 sandwiches and conveys the stock root side portion of the cut grain culm to the rear of the cut grain culm. The tip side is inserted into a handling chamber (not shown), threshing is performed by a rotating culm (not shown), and the grains obtained by the threshing process and dust such as cut straw are sorted. Perform the sorting process. A grain tank 8 is provided at the rear of the traveling machine in a side-by-side manner with the threshing device 6. The grain tank 8 collects and stores the grains obtained by the threshing device 6. A grain discharging device 9 for discharging grains from the grain tank 8 is connected to the rear portion of the grain tank 8.

[Structure of pre-cutting processing unit]
As shown in FIGS. 1 and 2, the pre-cutting processing unit 5 is provided in the front portion of the pre-cutting processing unit 5, and has the cutting unit 5A for cutting the planted culm and the rear portion of the cutting unit 5A facing backward. It is provided with a supply transport device 5B for transporting the cut grain culms that have been stretched and cut by the cutting unit 5A to the rear.

As shown in FIGS. 1 and 2, the cutting section 5A is provided in three raising paths 10 for introducing the planted culms of the three planting lines separately by traveling the machine, and each raising path 10 is provided with the raising path. A raising device 11 for raising the planted culm introduced in No. 10 and a clipper-shaped cutting device 12 provided behind the raising device 11 for cutting the stock of three rows of planted culm. I have. As shown in FIG. 7, each raising device 11 is provided in a backward tilted posture. Behind each raising device 11, an endless rotary scraping body 13 is provided that scrapes and supplies the stock root side portion of the planted grain culm to be raised and processed to the cutting device 12.

As shown in FIG. 2, the supply / transport device 5B is rotatably provided above the cutting device 12 so as to correspond to the end portion of each endless rotating scraping body 13, and the stock root side portion of the cutting grain culm is provided. The rotary wheel 15 that scrapes to the rear side of the cutting device 12 and the cut grain culm from the leftmost rotary wheel 15 of the three rotary wheel 15s are endlessly rotated and conveyed to the merging point 14. At the confluence 14, the left transfer device 15a, the cut grain culm from the right end and the center rotary ring body 15 of the three rotary wheel bodies 15, and the cut grain culm from the left end rotary wheel body 15 are conveyed by the left end transfer device 15a. It is provided with a merging transport section 16 for merging and transporting the merged three cut grain culms to the rear and supplying them to the starting end of the grain removal feed chain 7.

As shown in FIG. 2, the merging transport unit 16 sandwiches and transports the stock root side portion of the harvested grain culm rearward by the endless rotating stock root transport body 17 and the stock root transport guide rod 18, and the threshing feed chain 7 The tip clerk that locks and conveys the stock root holding and transporting section 16A to be supplied to the starting end portion, and the tip side portion of the harvested grain culm toward the threshing feed chain 7 by the endless rotating tip carrier 19 and the tip transport guide rod 20. It is provided with a stop transport unit 16B. In the tip locking transport section 16B, when the stock root holding transport section 16A supplies the stock root side portion of the harvested culm to the threshing feed chain 7, the tip side portion of the harvested culm is inside the threshing feed chain 7. Pull and change the posture of the harvested culm supplied to the threshing feed chain 7 to the sideways posture. The endless rotary stock carrier 17 transports the stock root side portion of the harvested grain from the right end and the central rotary wheel body 15 of the three rotary wheel bodies 15 to the confluence point 14. It is provided with a body 17a and a stock source carrier 17b on the terminal side for transporting the stock root side portion of the harvested grain stalk transported to the confluence portion 14 toward the grain removal feed chain 7. The endless rotating stock carrier 17 is composed of an endless rotating chain having a link 17c with protrusions (see FIG. 3). The endless rotating tip carrier 19 is composed of an endless rotating chain having a locking arm 19a (see FIG. 3).

As shown in FIGS. It is provided with a terminal guide rod portion 18b that opposes the portion of the transport terminal side of 17. As shown in FIGS. 3 and 7, the start end side guide rod portion 18a and the end side guide rod portion 18b are a connecting portion 18x provided at the rear end portion of the start end side guide rod portion 18a and a terminal side guide rod portion. The connecting portion 18y provided at the front end portion of the 18b is separably connected by connecting with a connecting bolt.

As shown in FIGS. 1 and 8, the drive mechanism (not shown) of the merging transport unit 16 is covered from above above the tip locking transport unit 16B, and the tip locking transport unit of the cut grain culm is covered. A transport cover 22 is provided that receives and supports a portion on the tip side of the portion where the 16B is locked. As shown in FIGS. A tip side guide culm 23 for transport guidance is provided. Between the stock root pinching transport unit 16A and the tip locking transport unit 16B, between the portion of the cut grain culm that is sandwiched by the stock root pinching transport unit 16A and the portion where the tip locking transport unit 16B is locked. A middle transport guide rod 24 is provided to support the culm portion to be located from the lateral side of the machine body and to meet the transport proposal. As shown in FIGS. 7 and 8, the middle transport guide rod 24 is composed of two strip members 24a.

[Structure of stock origin transport guide rod and tip transport guide rod]
As shown in FIGS. 1 and 2, the stock source transport guide rod 18, the tip transport guide rod 20, and the middle transport guide rod 24 are supported by a support frame 21 provided in the supply transport device 5B. The support frame 21 is extended from the pretreatment section frame 25 (see FIG. 1), passes from the lateral inner side of the machine body to the upper side of the merging transfer section 16 and toward the lateral outer side of the machine body than the merging transfer section 16. Is extending. In the present embodiment, the support frame 21 is made of a circular pipe material, but a square pipe material, an angle member, or the like can be adopted.

As shown in FIGS. It is divided into a free end side frame portion 21B that supports the above. The division of the support frame 21 is performed at a portion of the support frame 21 located on the lateral side of the machine body with respect to the merging and transporting portion 16. A connecting mechanism 40 is provided for detachably connecting the upper end portion 26 of the free end side frame portion 21B to the lower end portion 27 of the base end side frame portion 21A. For example, when removing the cut grain culm clogged in the merging transport unit 16, the free end side frame portion 21B is removed from the base end side frame portion 21A by operating the connecting mechanism 40 in the released state. Then, the stock source transport guide rod 18, the tip transport guide rod 20, and the middle transport guide rod 24 are attached to the free end side frame portion 21B and detached from the base end side frame portion 21A from the supply transport device 5B (merged transport unit 16). Can be taken out.

As shown in FIGS. 3, 4, and 7, the free end side frame portion 21B is provided with a handle 28 capable of supporting the free end side frame portion 21B. In the present embodiment, as shown in FIGS. 34 and 7, the handle 28 is extended from the upper end portion 26 in a direction along the extending direction of the stock transfer guide rod 18. When the free end side frame portion 21B is attached or detached, the free end side frame portion 21B can be supported by the handle 28. In this embodiment, the handle 28 is made of a round steel pipe material. In addition to the round steel pipe material, a square steel pipe material, an angle material, or the like can be used for the handle 28.

The stock transfer guide rod 18 is supported on the free end side frame portion 21B as follows. As shown in FIGS. 3, 4, and 7, the free end side frame portion 21B is provided with a support rod 29 extending from the upper end portion 26 toward the endless rotating stock source carrier 17, and the extended end portion of the support rod 29. An intermediate portion of the stock transfer guide rod 18 in the front-rear direction is connected to the stock base transport guide rod 18.

Specifically, as shown in FIG. 4, the upper end portion 26 is provided with a first upper end portion 26a and a second upper end portion 26b arranged in the width direction of the machine body. The support rod 29 includes a vertically oriented rod portion 29a extending downward from the inner first upper end portion 26a of the first upper end portion 26a and the second upper end portion 26b, and an endless rotating stock element from the lower portion of the vertically oriented rod portion 29a. A lateral rod portion 29b extending toward the carrier 17 is provided. The stock transfer guide rod 18 is connected to the end of the sideways rod portion 29b on the side opposite to the vertically facing rod portion 29a side. The vertically facing rod portion 29a is composed of two strip-shaped spring plates that impart a grain holding force to the stock root transport guide rod 18. The vertically oriented rod portion 29a extends in a direction orthogonal to the proximity separation direction A (see FIG. 4) of the stock origin transport guide rod 18 with respect to the endless rotation stock origin transport body 17. The lateral rod portion 29b extends in a direction along the proximity separation direction A. The proximity direction of the stock root transport guide rod 18 with respect to the endless rotation stock root transport body 17 is the direction in which the stock root transport guide rod 18 presses the harvested grain culm against the endless rotation stock root transport body 17. be. The separation direction in the proximity separation direction A is the direction of the grain culm holding reaction force received by the stock origin transport guide rod 18 by holding the cut grain culm.

As shown in FIGS. 3, 4, and 7, the support of the tip transfer guide rod 20 to the free end side frame portion 21B is from the upper end portion 26 of the free end side frame portion 21B toward the endless rotating tip transfer body 19. This is done by connecting the extending first support member 31 and the connecting member 32 provided in the intermediate portion of the tip transport guide rod 20 in the front-rear direction with a connecting bolt. The first support member 31 extends from the first upper end portion 26a.

As shown in FIGS. 3 and 7, the support of the middle transport guide rod 24 to the free end side frame portion 21B is achieved by connecting the front end portion of the middle transport guide rod 24 and the first support member 31 with a connecting bolt. It is done.

As shown in FIG. 4, the connecting mechanism 40 has a receiving portion 41 provided at the lower end portion 27 of the base end side frame portion 21A and a contact portion provided at the upper end portion 26 of the free end side frame portion 21B. 42, a fixing portion 43 for pressing the contacting portion 42 against the receiving portion 41 to fix the upper end portion 26 to the lower end portion 27, and a fixing portion 43 provided separately from the fixing portion 43 to lock the upper end portion 26 to the lower end portion 27. A locking portion 44 is provided.

By switching the fixed portion 43 to the released state to release the pressing of the contacting portion 42 against the receiving portion 41 and switching the locking portion 44 to the released state to release the locking of the upper end portion 26 to the lower end portion 27. The connecting mechanism 40 is switched to the released state, the free end side frame portion 21B is removed from the base end side frame portion 21A, and the stock source transport guide rod 18, the tip transport guide rod 20 and the middle transport guide rod 24 are supplied and transported ( It can be removed from the merging transport unit 16). By switching the locking portion 44 to the working state, locking the upper end portion 26 to the lower end portion 27, switching the fixing portion 43 to the working state, and pressing the contacting portion 42 against the receiving portion 41, the connecting mechanism 40 After switching to the working state, the free end side frame portion 21B is connected to the base end side frame portion 21A, and the stock origin transport guide rod 18, the tip transport guide rod 20, and the middle transport guide rod 24 are supplied and transported by the supply transport device 5B (merging transport unit). Be prepared for 16). The free end side frame portion 21B is connected to the base end side frame portion 21A by locking the upper end portion 26 to the lower end portion 27 and pressing the contact portion 42 against the receiving portion 41, and the free end side frame portion 21B is connected to the base end side frame portion 21A. Is firmly supported by the base end side frame portion 21A against the culm holding reaction force applied to the stock culm transport guide rod 18.

As shown in FIG. 4, the lower end portion 27 is provided with a first lower end portion 27a and a second lower end portion 27b arranged in the width direction of the machine body, and the receiving portion 41 is formed at the first lower end portion 27a. A receiving portion 41a and a second receiving portion 41b formed on the second lower end portion 27b are provided. The first abutting portion 42a formed on the abutting portion 42 at the first upper end portion 26a and applied to the first receiving portion 41a, and the second upper end portion 26b formed on the second upper end portion 26b and applied to the second receiving portion 41b. A second attachment portion 42b to be attached is provided. The locking portion 44 is provided over the first upper end portion 26a and the first lower end portion 27a, and the fixing portion 43 is the second upper end portion 26b of the first upper end portion 26a and the second upper end portion 26b. It is provided in.

As shown in FIG. 4, the locking portion 44 is located at a position different from that of the fixed portion 43 in the proximity separation direction A of the stock base transport guide rod 18 with respect to the endless rotation stock base transport body 17. More specifically, the locking portion 44 and the fixing portion 43 face each other in the proximity separation direction A. The connecting mechanism 40 has a distance L1 from the stock origin transport guide rod 18 to the fixed portion 43 and a distance L1 from the stock origin transport guide rod 18 to the locking portion 44 in a directional view along the axis Z of the stock origin transport guide rod 18. It is configured so that the distance L2 is almost the same. The distance L1 from the stock origin transport guide rod 18 to the fixed portion 43 is the distance from the shaft core Z of the stock origin transport guide rod 18 to the portion of the headed pin 46 in the fixed portion 43 on which the wedge member 47 is hooked. .. The distance L2 from the stock origin transport guide rod 18 to the locking portion 44 is from the axis Z of the stock origin transport guide rod 18 to the portion where the first upper end portion 26a of the pins 49 in the locking portion 44 fits. Is the distance.

As shown in FIGS. 4 and 6, the first receiving portion 41a and the second receiving portion 41b in the receiving portion 41 are configured by a receiving surface in a direction orthogonal to the proximity separation direction A. The first contact portion 42a and the second contact portion 42b in the contact portion 42 are configured by a contact surface in a direction orthogonal to the proximity separation direction A.

[Structure of locking part]
As shown in FIGS. 4 and 6, the locking portion 44 includes a pin hole 50 and a pin 49 that can be engaged with and detached from the pin hole 50. The pin 49 is provided so as to extend in a direction along the proximity separation direction A. In the present embodiment, as shown in FIG. 6, the pin hole 50 is provided in the first upper end portion 26a, and the pin 49 is provided in the first lower end portion 27a, but is provided in the first lower end portion 27a. It is possible to use a pin hole and a pin provided in the first upper end portion 26a.

〔Fixed part〕
As shown in FIGS. 4, 5 and 6, the fixing portion 43 has two headed pins 46, a second upper end portion 26b, and a second upper end portion 26b on the opposite side to the second lower end portion 27b side. Two pin hole portions 48 provided over the support plate portion 52 provided on the side portion, and a wedge member provided on the side opposite to the side where the second lower end portion 27b is located with respect to the second upper end portion 26b. 47 and.

The two headed pins 46 extend from the second lower end portion 27b toward the second upper end portion 26b. The size of the two pin hole portions 48 is larger than that of the head 46a of the headed pin 46, and the head 46a can be inserted into the pin hole portion 48.

As shown in FIGS. The posture is changed to the action state of fitting into the gap between the head 46a of 46 and the action release of being removed from the gap between the second upper end portion 26b and the head 46a. As shown in FIGS. 5 and 6, one end of the wedge member 47 is supported by the support plate 52 via the support pin 51. The posture of the wedge member 47 is changed into an action state and an action release state by swinging the support pin 51 as a swing fulcrum.

In the fixed portion 43, as shown in FIGS. 4 and 6, when the wedge member 47 is changed to the working state, the wedge member 47 is inserted into the gap between the support plate portion 52 and the head 46a to press the head 46a. The second upper end portion 26b is pressed against the reaction force point, and the second contact portion 42b is pressed against the second receiving portion 41b. When the second contact portion 42b is pressed against the second receiving portion 41b, the first pressing portion 42a is pressed against the first receiving portion 41a. The fixing portion 43 is in an action state so as to press the upper end portion 26 against the lower end portion 27 to fix the fixing portion 43.

In the fixed portion 43, as shown by the alternate long and short dash line in FIG. 6, when the wedge member 47 is changed to the released state, the wedge member 47 comes out from the gap between the support plate portion 52 and the head 46a, and the wedge member 47 The pressing of the second contacting portion 42b against the second receiving portion 41b is released. When the pressing of the second attaching portion 42b to the second receiving portion 41b is released, the pressing of the first attaching portion 42a to the first receiving portion 41a is released. The fixed portion 43 is in a released state so as to release the pressing of the upper end portion 26 against the lower end portion 27.

As shown in FIGS. It is configured to be. The wedge member 47 is arranged on the lateral side of the machine body with respect to the second upper end portion 26b.

When the wedge member 47 is oscillated downward with the left-right axis P of the support pin 51 as the oscillating axis as shown by the two-dot chain line in FIG. 5, the fixing portion 43 is switched to the released state. The wedge member 47 whose fixed portion 43 has been switched to the released state can be held in position by the first holder 53. The first holder 53 is composed of a bolt hole provided in the wedge member 47 and a bolt with a knob that can be attached to and detached from the screw hole 54 provided in the support plate portion 52.

When the wedge member 47 is oscillated upward with the left-right axis P as the oscillating axis as shown by the solid line in FIG. 5, the fixing portion 43 is switched to the working state. The wedge member 47 whose fixing portion 43 has been switched to the working state is configured to be able to hold the position by the second holder 55. The second holder 55 is composed of a bolt hole provided in the wedge member 47 and a bolt with a knob that can be attached to and detached from the screw hole 56 provided in the support plate portion 52. The first holder 53 and the second holder 55 are configured by the same bolt with a knob.

When the wedge member 47 is oscillated downward with the left-right axis P of the support pin 51 as the oscillating axis as shown by the two-dot chain line in FIG. 5, the fixing portion 43 is switched to the released state. The wedge member 47 whose fixed portion 43 has been switched to the released state can be held in position by the first holder 53. The first holder 53 is composed of a bolt hole provided in the wedge member 47 and a bolt with a knob that can be attached to and detached from the screw hole 54 provided in the support plate portion 52.

When the wedge member 47 is oscillated upward with the left-right axis P as the oscillating axis as shown by the solid line in FIG. 5, the fixing portion 43 is switched to the working state. The wedge member 47 whose fixing portion 43 has been switched to the working state is configured to be able to hold the position by the second holder 55. The second holder 55 is composed of a bolt hole provided in the wedge member 47 and a bolt with a knob that can be attached to and detached from the screw hole 56 provided in the support plate portion 52. The first holder 53 and the second holder 55 are configured by the same bolt with a knob.

As shown in FIGS. 1 and 8, the connecting mechanism 40 is arranged behind the leftmost raising device 11 among the three raising devices 11. 56 shown in FIG. 8 is a strut frame that supports the raising device 11. The wedge member 47 as an operating lever that switches the fixed portion 43 between the working state and the released state is swung downward from the working state around the left-right axis P to be in the released state, and the fixed portion 43 is released. Switch. It is easy to operate the wedge member 47 from the lateral outer side of the machine body to the released state, and it is easy to switch the connecting mechanism 40 from the lateral outer side of the machine body to the released state. While holding the position of the wedge member 47 whose fixed portion 43 has been switched to the released state by the first holder 53 so as not to shake, the stock origin transport guide rod 18, the tip transport guide rod 20 and the middle transport guide rod 24 are the base ends. It can be removed from the side frame portion 21A. When the stock origin transport guide rod 18, the tip transport guide rod 20, and the middle transport guide rod 24 are supported by the base end side frame portion 21A, the wedge member 47 whose fixing portion 43 has been switched to the working state is held second so as not to loosen. The position can be held by the tool 55.

[Another Embodiment]
(1) In the above-described embodiment, an example in which three-row cutting is possible is shown, but the present invention is not limited to this. For example, it may be configured to enable two-row cutting or four-row cutting or more.

(2) In the above-described embodiment, an example is shown in which the connecting mechanism 40 is provided with a receiving portion 41, a contact portion 42, and a fixing portion 43, but the present invention is not limited to this. For example, the upper end portion 26 and the lower end portion 27 may be connected by a connecting bolt or the like.

(3) In the above-described embodiment, the receiving portion 41 is composed of a receiving surface in a direction orthogonal to the proximity separation direction A, and the abutting portion 42 is formed by a abutting surface in a direction orthogonal to the proximity separation direction A. The configured example is shown, but it is not limited to this. For example, the receiving portion 41 and the contacting portion 42 may be configured by a surface inclined with respect to the proximity separation direction A. Further, one of the receiving portion 41 and the abutting portion 42 may be formed of a concave surface, and the other may be formed of a convex surface that fits into the concave surface.

(4) In the above-described embodiment, an example in which the locking portion 44 is provided toward the first upper end portion 26a and the fixing portion 43 is provided toward the second upper end portion 26b is shown, but the second upper end portion 26b is provided. The locking portion 44 may be provided on the side, and the fixing portion 43 may be provided on the first upper end portion 26a.

(5) In the above-described embodiment, an example in which the fixing portion 43 provided with the wedge member 47 is adopted is shown, but the present invention is not limited to this. For example, it is possible to adopt a fixing portion provided with various tightening means such as a tightening screw.

(6) In the above-described embodiment, the locking portion 44 may not be provided, which is shown as an example in which the locking portion 44 is provided. Further, in the case of the one provided with the locking portion 44, any positional relationship between the locking portion 44 and the fixing portion 43 may be used. Further, the locking portion 44 is not limited to the pin hole 50 and the pin 49, and a locking portion including a locking tool such as a hook may be adopted.

(7) In the above-described embodiment, the handle 28 may not be provided, which shows an example in which the handle 28 is provided. Further, in the case of providing a handle, the handle may extend in a direction different from the extending direction of the stock transfer guide rod 18.

(8) In the above-described embodiment, an example including the first holder 53 and the second holder 55 is shown, but the present invention is not limited to this. For example, it may be provided with only one of the first holder 53 and the second holder 55, or may not be provided with both the first holder 53 and the second holder 55.

The present invention has a pre-cutting processing unit having a supply and transport device for transporting the cut grain culms cut by the cutting unit to the rear, and a threshing feed chain to which the cut grain culms are supplied by the supply and transport device. A threshing device for performing threshing processing, and a stock-root holding and transporting unit for holding and transporting the stock-source side portion of the harvested grain culm by an endless rotating stock-source transporter and a stock-source transport guide rod. It can be applied to a combine provided with a tip locking transport portion for locking and transporting the tip side portion of the harvested grain culm by an endless rotating tip transport body and a tip transport guide rod.

5 Pre-cutting processing device 5A Cutting unit 5B Supply transport device 6 Grain removal device 7 Grain removal feed chain 11 Raising device 16A Stock origin holding transfer device 16B Tip locking transfer device 17 Endless rotation Stock source transfer body 18 Stock source transfer guide rod 19 Endless Rotating tip transfer body 20 Tip transfer guide rod 21 Support frame 21A Base end side frame part 21B Free end side frame part 26 Upper end part 27 Lower end part 28 Handle 29 Support rod 29a Vertical rod part 29b Horizontal rod 40 Connecting mechanism 41 Receiving part 42 Mounting part 43 Fixed part 44 Locking part 47 Operation lever (wedge member)
49 pins 50 pin holes 53 1st holder 55 2nd holder L1 distance L2 distance P Left-right axis

Claims (12)

A cutting unit that cuts the root of the planted culm and cuts the planted culm, and a pre-cutting processing unit that has a supply transport device for transporting the harvested culm cut by the cutting unit to the rear.
A threshing device having a threshing feed chain to which the cut grain culm is supplied by the supply and transport device and performing a threshing process of the cut grain culm is provided.
The supply and transport device is provided with an endless rotation of the stock root side portion of the harvested grain culm and an endless rotation of the stock root holding and transporting portion of the stock root transporting body and the stock root transport guide rod. A tip locking transport portion for locking and transporting by a moving tip transport body and a tip transport guide rod, and a support frame for supporting the stock origin transport guide rod and the tip transport guide rod are provided.
The support frame is divided into a base end side frame portion and a free end side frame portion.
The stock origin transport guide rod and the tip transport guide rod are supported by the free end side frame portion.
A connecting mechanism is provided for detachably connecting the upper end portion of the free end side frame portion to the lower end portion of the base end side frame portion.
The connecting mechanism is provided with a receiving portion provided at the lower end portion and a receiving portion provided at the upper end portion, and is provided in a direction in which the stock origin transport guide rod is close to the receiving portion and the endless rotating stock element transporting body. The abutting portion that can be closely separated in the direction along the A combine provided with a fixing portion for fixing the upper end portion to the lower end portion. The receiving portion is a receiving surface in a direction orthogonal to the proximity and separation directions.
The contact portion is a contact surface in a direction orthogonal to the proximity separation direction, and is a contact surface.
An endless rotating stock source transport from the upper end portion of the free end side frame portion to a vertically oriented rod portion extending downward from the upper end portion and in a direction orthogonal to the proximity separation direction, and from the lower portion of the vertically oriented rod portion. A support rod having a lateral rod extending in a direction along the proximity separation direction toward the body is provided.
The combine according to claim 1, wherein the stock transfer guide rod is supported at an end portion of the sideways rod portion opposite to the vertically oriented rod portion. The combine according to claim 1 or 2, further comprising a locking portion for locking the upper end portion to the lower end portion in addition to the fixing portion. The combine according to claim 3, wherein the locking portion is provided at a position different from that of the fixing portion in a direction along the proximity separation direction. The combine according to claim 4, wherein the locking portion and the fixing portion face each other in a direction along the proximity separation direction. The locking portion comprises a pin hole and a pin that can be engaged and disengaged in the pin hole.
The combine according to any one of claims 3 to 5, wherein the pin is provided in a state of extending in a direction along the proximity separation direction. In the direction along the axis of the stock transfer guide rod, the distance from the stock transport guide rod to the fixed portion and the distance from the stock transport guide rod to the locking portion are substantially the same. The combine according to any one of claims 3 to 6. The combine according to any one of claims 1 to 7, wherein the free-end frame portion is provided with a handle capable of supporting the free-end side frame portion. The combine according to claim 8, wherein the handle extends from the upper end portion in a direction along an extension direction of the stock origin transport guide rod. The cutting section is equipped with a raising device for raising and processing planted culms in a backward tilted posture.
The connecting mechanism is located behind the raising device and is located behind the raising device.
The fixed portion is provided with an operating lever that switches the fixed portion between an operating state and a releasing state in a state in which it can rotate around the axis in the left-right direction.
The combine according to any one of claims 1 to 9, wherein the operation lever is swung downward to switch the fixed portion to the released state. The combine according to claim 10, further comprising a first holder for holding the position of the operating lever whose fixing portion has been switched to the released state. The combine according to claim 10 or 11, further comprising a second holder for holding the position of the operating lever with the fixed portion switched to the working state.

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