JP2022012790A - Harvester - Google Patents

Abstract

To provide a harvester capable of achieving a rearward transport function and putting function of a transport device, while suppressing affection.SOLUTION: A transport device 7 comprises: a transport case 12 provided over a harvesting part and an inlet 57 of a thresher; a transport mechanism 13 which is provided over a front end of the transport case 12 and a rear part, in the transport case 12, is driven to rotate along a cross direction of the transport case 12, for transporting crops harvested by the harvesting part rearward; and a feeding member 14 which is provided on a rear side relative to a rear end of the transport mechanism 13 in the transport case 12, is driven to rotate around a lateral shaft core P1 along a lateral direction, for putting the crops from the transport mechanism 13 into an inlet 57 of the thresher.SELECTED DRAWING: Figure 3

Description

The present invention relates to a harvester for threshing all culms of harvested crops.

As a harvester for threshing all the harvested crops, as disclosed in Patent Document 1, the crops in the field are harvested by the harvesting section, the crops are transported backward by the transport device, and the crops are threshed from the transport device. Some are configured to be loaded at the entrance of the device.

Japanese Unexamined Patent Publication No. 2015-146802

The transport device has two functions, a rear transport function for transporting the crops harvested by the harvesting unit to the rear and a loading function for feeding the crops transported backward to the entrance of the threshing device.
In the backward transport function, the crop is transported approximately linearly over a relatively long distance from the front to the rear of the transport device. In the feeding function, the crop is thrown into the entrance of the threshing device so that it is released.

As a result, in the transport device, the rear transfer function and the loading function have different properties from each other, so that the rear transfer function and the loading function are configured so as to be compatible with each other with little influence on each other. , There is room for improvement.

An object of the present invention is to configure a harvester so that the rear transfer function and the loading function of the transfer device are compatible with each other with little influence on each other.

The harvester of the present invention is provided at the front portion of the machine body, has a harvesting section for harvesting crops in the field, a transport device connected to the harvesting section and transporting the crops harvested by the harvesting section to the rear, and the above. A threshing device that receives all the crops transported by the transport device and performs threshing processing is provided, and the transport device includes a transport case provided over the harvesting section and the entrance of the threshing device, and the transport. Inside the case, it is provided in a state extending from the front end portion and the rear portion of the transport case, and is rotationally driven along the front-rear direction of the transport case to transport the crops harvested by the harvesting section to the rear. The transport mechanism is provided inside the transport case in a state of being located behind the rear end of the transport mechanism, and is rotationally driven around the left and right axis along the left-right direction to drive the transport mechanism. It is provided with a feeding member for feeding the crops from the above into the entrance of the threshing device.

According to the present invention, in the transport device, the crops harvested by the harvesting section are transported substantially linearly from the front end portion to the rear portion of the transport case by the transport mechanism. When the crop reaches the rear end of the transport mechanism, the crop is delivered from the transport mechanism to the feed member, and the feed member feeds the crop from the rear end of the transport case to the entrance of the threshing device.

According to the present invention, in the transport device, the transport mechanism is responsible for the rearward transport function, and the feed member is responsible for the feed function. , Composed separately.
By separately configuring the transport mechanism and the feed member in the transport device, it is possible to configure the transport mechanism to be suitable for the rearward transport function without being affected by the feed member. Similarly, it is possible to configure the feed member to be suitable for the feeding function without being affected by the transport mechanism.

According to the present invention, in the transport device, the rear transport function and the loading function can be compatible with each other with little influence on each other, and the crops are smoothly transported to the rear by the transport device and at the entrance of the threshing device. The harvesting performance of the harvester can be improved by smoothly feeding the crops.

In the present invention, it is preferable that the transport mechanism is rotationally driven at a lower speed than the feed member.

According to the present invention, in the transport device, the transport mechanism is rotationally driven at a lower speed than the feed member, and in other words, the feed member is rotationally driven at a higher speed than the feed member.
As a result, in the transporting device, the crops are smoothly delivered from the transporting mechanism to the feeding member, and the feeding of the crops to the entrance of the threshing device by the feeding member can be performed without delay.

In the present invention, it is preferable that the harvesting section and the transport device are supported so as to be able to move up and down around the left and right axis.

In the harvester, the harvesting section and the transport device are often supported so as to be able to move up and down.
According to the present invention, since the left and right shaft cores in which the feed member of the transport device is rotatably supported and the left and right shaft cores in which the harvesting section and the transport device are moved up and down are the same, the harvesting section and the transport device are moved up and down. Even if it is done, the position of the feed member of the transport device does not change.
As a result, even if the harvesting section and the transporting device are moved up and down, the feed member of the transporting device stably feeds the crop to the entrance of the threshing device.

In the present invention, the drive shaft is rotatably supported in a concentric manner with the left and right shaft cores, the feed member is attached to the drive shaft, and the power of the engine is transmitted to the drive shaft by the drive shaft. It is preferable that the feed member is rotationally driven.

According to the present invention, the drive shaft to which the power of the engine is transmitted is supported in a concentric manner with the left and right shaft cores, and the feed member of the transport device is attached to the drive shaft, whereby the feed member of the transport device is rotationally driven. The structure can be compactly configured.

In the present invention, the feed member is combined with a plurality of blade members so as to form a space along the left-right direction at the center and extend outward along the radial direction from the space. A boss member attached over the outer surface of the drive shaft and the blade member is provided so that the drive shaft and the blade member rotate integrally with the drive shaft passed through the space. It is preferable to have.

According to the present invention, in the feed member of the transport device, by combining a plurality of blade members, a space for attaching the feed member to the drive shaft and a blade member for throwing crops into the entrance of the threshing device are appropriately configured. This is advantageous in terms of simplifying the structure of the feed member of the transport device.

According to the present invention, in a state where the drive shaft is inserted into the space of the blade member (feed member), the boss member is arranged inside the space of the blade member (feed member), and the blade member (feed member) is the drive shaft. Since it is attached to the boss member, the boss member has little influence on the input of the crop by the feather member.

In the present invention, it is preferable that a transmission mechanism capable of transmitting the power transmitted to the drive shaft to the transfer mechanism is provided.

According to the present invention, in the transport device, the power of the engine is transmitted to the drive shaft to rotationally drive the feed member, and the power of the drive shaft is transmitted to the transport mechanism via the transmission mechanism to provide the transport mechanism. It is driven to rotate.
As a result, in the transport device, the transmission system is simply configured in series from the feed member to the transport mechanism.

In the present invention, it is preferable that the power transmitted to the drive shaft is decelerated by the transmission mechanism and transmitted to the transfer mechanism, so that the transfer mechanism is rotationally driven at a lower speed than the feed member. be.

According to the present invention, in the transport device, the transport mechanism is rotationally driven at a lower speed than the feed member, and in other words, the feed member is rotationally driven at a higher speed than the feed member.
As a result, in the transporting device, the crops are smoothly delivered from the transporting mechanism to the feeding member, and the feeding of the crops to the entrance of the threshing device by the feeding member can be performed without delay.

According to the present invention, when the transport mechanism is configured to be rotationally driven at a lower speed than the feed member (when the feed member is configured to be rotationally driven at a higher speed than the feed member), the transmission is transmitted to the drive shaft. Power is decelerated by the transmission mechanism and transmitted to the transport mechanism.
As a result, in the transport device, the transport mechanism is rotationally driven at a lower speed than the feed member (the feed member is a transport mechanism) while maintaining a state in which the transmission system is simply configured in series from the feed member to the transport mechanism. It is possible to obtain a configuration that is rotationally driven at a higher speed than that.

In the present invention, it is preferable that the drive shaft is provided with a reversing mechanism capable of transmitting reversing power.

According to the present invention, when a crop jam or the like occurs in the vicinity of a feed member in a transport device, the drive shaft (feed member) is rotationally driven in the reverse direction by a reversing mechanism to eliminate the crop jam or the like. Easy to do.

In the present invention, it is preferable that the feed member can be removed and the rear end portion of the transport mechanism can be switched to a state in which the rear end portion is attached to the drive shaft.

According to the present invention, when it is not appropriate to provide a feed member in the transport device due to various working conditions such as the type of crop, field conditions and weather, the feed member is removed in the transport device and the transport mechanism is used. The rear end may be switched to the state where it is attached to the drive shaft.
This makes it possible to set a state in which the transport device is provided with a transport mechanism and a feed member, and a state in which the transport device is equipped with a transport mechanism and is not provided with a feed member, according to various work conditions. Harvesting performance can be improved.

In the present invention, it is preferable that the top plate member is detachably provided on the upper surface portion of the transport case and the upper surface portion can be opened over the right portion and the left portion of the transport case.

According to the present invention, by removing the top plate member, the upper surface portion of the transport device (transport case) can be largely released, so that maintenance work inside the transport device can be easily performed.

It is a side view of a combine. It is a vertical sectional side view of the rear part of a threshing device and a transport device. It is a longitudinal side view of the front part of the threshing device and the rear part of the transport device. It is a schematic plan view which shows the transmission system of a transfer device. It is a perspective view of a feed member. It is a vertical sectional front view of a feed member. It is a vertical sectional side view of a feed member. It is a vertical sectional front view of the transport case of a transport device. It is a front view near the entrance of a threshing device. It is a front view of the support frame arranged in the right part and the left part of the front part of a threshing device. It is a vertical sectional side view of a support part. It is a vertical sectional side view of a support part. It is a front view near the guide part. It is a perspective view of a guide part. It is a longitudinal side view of the front part of the threshing device and the rear part of the transport device in the state where the mounting height of the transfer device to the threshing device is set to the high position. It is a longitudinal side view of the front part of the threshing device and the rear part of the transfer device in the first alternative embodiment of the invention.

1 to 16 show a normal combine as an example of a harvester. In FIGS. 1 to 16, F indicates a forward direction, B indicates a backward direction, and U indicates an upward direction. , D indicates a downward direction, R indicates a right direction, and L indicates a left direction.

(Overall composition of combine harvester)
As shown in FIG. 1, the machine body 1 is supported by the right and left crawler type traveling devices 2. The driving unit 3 on which the worker is boarding is provided on the right side of the front portion of the machine body 1. The threshing device 4 is provided on the left side of the rear part of the machine body 1, and the grain tank 5 is provided on the right part of the rear part of the machine body 1.

The harvesting section 6 is provided in the front portion of the machine body 1, the transport device 7 is connected to the rear portion of the harvesting section 6 and extends diagonally rearward and upward, and the rear portion of the transport device 7 is a left-right axis along the left-right direction. It is attached to the front part of the threshing device 4 so as to be able to move up and down around the shaft core P1 which is the core. The elevating cylinder 8 is connected to the machine body 1 and the transport device 7, and the harvesting section 6 and the transport device 7 are supported by the elevating cylinder 8 so as to be able to be lifted and lowered around the axis P1.

The harvesting section 6 is provided with a scraping reel 9, a clipper-shaped cutting device 10, and a lateral feed screw 11. As the machine 1 advances, the crops in the field are scraped by the scraping reel 9, the roots of the crops are cut and cut by the cutting device 10, and the harvested crops are harvested by the lateral feed screw 11. It is collected on the left and right center sides of the above and supplied to the transport device 7.

The crops supplied from the harvesting unit 6 to the transport device 7 are transported backward by the transport device 7, and all the culms of the crops transported by the transport device 7 are put into the threshing device 4. The crop is threshed in the threshing device 4, and the grains collected by the threshing device 4 are stored in the grain tank 5.

(Structure of transport device)
As shown in FIG. 1, the transport device 7 is provided with a transport case 12, a transport mechanism 13, and a feed member 14 as a rotating member.

As shown in FIGS. 2, 3 and 4, the transport case 12 is formed of a plate material in a square cylinder shape, and has a harvesting section 6 and an inlet 57 of the threshing device 4 (see (described later (see the configuration of the guide section)). It is provided over.

As shown in FIG. 8, an opening 12c extending to the right portion 12a and the left portion 12b of the transport case 12 is opened in the upper surface portion of the rear portion of the transport case 12 (the upper surface portion above the feed member 14 and the sprocket 16 described later). Has been done.

A top plate member 33 that can be attached to and detached from the upper surface of the transport case 12 is provided by the bolt 34. The opening 33a is opened in the top plate member 33, and the lid member 33b that closes the opening 33a can be attached to and detached from the top plate member 33 by the nut 64.

The top plate member 33 is attached by the bolt 34 over the right portion 12a and the left portion 12b of the transport case 12, so that the opening portion 12c of the transport case 12 is closed by the top plate member 33. By removing the top plate member 33, the opening portion 12c of the transport case 12 is opened (the upper surface portion of the transport case 12 is opened over the right portion 12a and the left portion 12b of the transport case 12).

As shown in FIGS. 1 to 4, the transport mechanism 13 is attached to the front right and left sprockets 15, the rear right and left sprockets 16, and the right sprockets 15 and 16 along the front-rear direction. A large number of transport bodies 18 attached along the left-right direction along the left transport chain 17 and the right and left transport chains 17 are provided, and inside the transport case 12, the front end portion of the transport case 12 and the transport case 12 are provided. It is provided over the rear part.

The feed member 14 is provided inside the transport case 12 on the rear side of the rear end portion (sprocket 16) of the transport mechanism 13. As shown in FIGS. 5, 6 and 7, three flat plate-shaped blade members 19 are provided, and the outer side portion 9a of the blade members 19 is slightly bent. The blade members 19 are combined so that a space 14a having a triangular cross section along the left-right direction is formed at the center of the feed member 14, and extends outward along the radial direction from the space 14a of the feed member 14. As described above, the blade members 19 are combined.

As shown in FIGS. 4, 6 and 7, the drive shaft 20 having a hexagonal cross section is rotatably supported in a concentric manner with the shaft core P1 (see FIG. 1). In the feed member 14, a boss member 21 having a hexagonal opening is provided, and the boss member 21 is attached to the space 14a of the feed member 14 by a bolt 62.

As shown in FIGS. 3, 4, and 9, ring-shaped right and left cover members 63 are attached to the inner surfaces of the right portion 12a and the left portion 12b of the transport case 12. The right end portion and the left end portion of the feed member 14 are inserted inside the cover member 63, and the crop is wound around the portion between the right portion 12a (left portion 12b) of the transport case 12 and the feed member 14 on the drive shaft 20. The sticking condition is prevented.

By inserting the drive shaft 20 into the opening of the boss member 21, the drive shaft 20 and the blade member 19 rotate integrally while the drive shaft 20 is passed through the space 14a of the feed member 14. The boss member 21 is attached to the outer surface of the drive shaft 20 and the blade member 19. As a result, the feed member 14 is in a state of being attached to the drive shaft 20, and the drive shaft 20 and the blade member 19 (feed member 14) are in a state of being integrally rotatable.

(Drive configuration of transport device)
As shown in FIGS. 2, 3, 4, and 9, the transmission shaft 23 is supported by the front portion of the threshing device 4 along the left-right direction, and the power of the engine 22 (see FIG. 1) mounted on the machine body 1 is supported. Is transmitted to the pulley 23a connected to the left portion of the transmission shaft 23.

As shown in FIGS. 4 and 9, the pulley 23b is connected to the left portion of the transmission shaft 23, the pulley 20a is connected to the left portion of the drive shaft 20, and the pulley 23b of the transmission shaft 23 and the pulley 20a of the drive shaft 20 are connected. The transmission belt 24 is attached to the above. A tension pulley 25 capable of pressing and separating the transmission belt 24 is provided, and a cutting clutch 26 having the transmission belt 24 and the tension pulley 25 is provided.

A sprocket 20b is connected to the right portion of the drive shaft 20, and a sprocket 27a is connected to a drive shaft 27 that supports the sprocket 16 in the transport mechanism 13, and is connected to the sprocket 20b of the drive shaft 20 and the sprocket 27a of the drive shaft 27. A transmission chain 28 as a transmission mechanism is attached throughout.

With the above configuration, the power of the engine 22 is transmitted to the drive shaft 20 via the transmission shaft 23 and the cutting clutch 26, and the drive shaft 20 is rotationally driven in the counterclockwise direction shown in FIGS. , The feed member 14 is rotationally driven around the shaft core P1 by the drive shaft 20 in the counterclockwise direction of FIGS. 1, 2, and 3.

The power of the drive shaft 20 is transmitted to the drive shaft 27 via the transmission chain 28 and is transmitted to the transfer mechanism 13, and the transfer mechanism 13 (sprocket 15, 16, transfer chain 17 and transfer body 18) is used. It is rotationally driven in the counterclockwise direction shown in FIGS. 1, 2 and 3 along the front-rear direction of the transport case 12.

A sprocket 27b is connected to the drive shaft 27, and the power of the drive shaft 27 is transmitted from the sprocket 27b of the drive shaft 27 to the harvesting portion 6 (scraping reel 9, cutting device 10 and lateral feed screw 11). When the cutting clutch 26 is operated in the disengaged state, the transport device 7 (transport mechanism 13 and feed member 14) and the harvesting section 6 (scraping reel 9, cutting device 10 and lateral feed screw 11) are stopped.

In this case, the sprocket 27a of the drive shaft 27 has a larger diameter than the sprocket 20b of the drive shaft 20, and the power of the drive shaft 20 is decelerated by the transmission chain 28 and transmitted to the drive shaft 27 (conveyance mechanism 13). Will be done. As a result, the transport mechanism 13 is rotationally driven at a lower speed than the feed member 14. In other words, the feed member 14 is rotationally driven at a higher speed than the transport mechanism 13.

As shown in the above-mentioned (overall configuration of the combine) and FIGS. From the front end portion to the rear portion of the transport case 12, the transport case 12 is substantially linearly transported rearward along the bottom portion of the transport case 12.

When the crop reaches the rear end portion (sprocket 16) of the transport mechanism 13, the crop is delivered from the transport mechanism 13 to the feed member 14 along the bottom of the transport case 12, and the feed member 14 transfers the crop to the outlet 7a of the transport device 7. (The rear end portion of the transport case 12) is charged into the inlet 57 of the threshing device 4 (see (configuration of the guide portion) described later).

(Structure of reversal mechanism)
As described later (configuration of the threshing device) and FIGS. 4 and 9, the threshing device 4 is provided with a handling cylinder 44, and is connected to a bevel gear 50a connected to a drive shaft 50 of the handling cylinder 44 and a transmission shaft 23. The bevel gear 23c is in mesh with the bevel gear 23c, and the handling cylinder 44 is rotationally driven by the power of the transmission shaft 23.

The transmission shaft 29 is supported concentrically with the transmission shaft 23, and the bevel gear 29a connected to the transmission shaft 29 meshes with the bevel gear 50a of the drive shaft 50, and the power of the transmission shaft 23 is the power of the drive shaft 50. It is transmitted to the transmission shaft 29 as reverse power via the bevel gear 50a.

A pulley 29b is connected to the right part of the transmission shaft 29, a pulley 20c is connected to the right part of the drive shaft 20, and the transmission belt 30 extends over the pulley 29b of the transmission shaft 29 and the pulley 20c of the drive shaft 20. Is attached. A tension pulley 31 capable of pressing and separating the transmission belt 30 is provided, and a reversing clutch 32 as a reversing mechanism having the transmission belt 30 and the tension pulley 31 is provided.

The reverse clutch 32 is normally operated in the disengaged state. When the harvesting unit 6 or the transport device 7 is clogged with crops, the cutting clutch 26 is operated in the disengaged state, and the reverse clutch 32 is temporarily operated in the transmission state.

When the reverse clutch 32 is operated in the transmission state, the reverse power of the transmission shaft 29 is transmitted to the drive shaft 20 via the reverse clutch 32, and the transfer mechanism 13 and the feed member 14 of the transfer device 7 are rotated in the opposite direction. Since it is rotationally driven, the scraping reel 9 and the lateral feed screw 11 of the harvesting section 6 are rotationally driven in the opposite direction. As a result, clogging of crops in the harvesting section 6 and the transport device 7 is eliminated.

When crop clogging or the like occurs in the rear part of the transport device 7, the operator removes the above-mentioned (configuration of the transport device) and the top plate member 33 shown in FIG. 8 from the opening 12c of the transport case 12. You can take out the jammed crops.
By removing the top plate member 33 in a state where the rear part of the transport device 7 is not clogged with crops, it is possible to perform replacement work and maintenance work of the feed member 14 and the sprocket 16 of the transport mechanism 13.

(Structure of attachment to the threshing device in the transport device)
As shown in FIG. 9, support frames 35 are provided along the vertical direction on the right and left portions of the front portion of the threshing device 4, and the right and left support portions 36 are connected to the support frame 35. There is. The right and left portions of the drive shaft 20 (see the above-mentioned (conveyance device configuration) (conveyor device drive configuration) and FIG. 4) are supported by the support portion 36.

As shown in FIGS. 9, 11 and 12, the support portion 36 is provided with a boss portion 36a, a connecting portion 36b, a reinforcing rib 36c, a receiving portion 36d, an opening portion 36e, and the like. In the support portion 36, the boss portion 36a is connected to the upper and lower intermediate portions of the flat plate-shaped connecting portion 36b. The reinforcing rib 36c is connected to the boss portion 36a and the upper and lower portions of the connecting portion 36b, and the receiving portion 36d is connected to the connecting portion 36b and the lower end portion of the reinforcing rib 36c. Four openings 36e along the vertical direction are opened in the upper part and the lower part of the connecting portion 36b.

As shown in FIGS. 10, 11 and 12, four openings 35a and four openings 35b are opened in the support frame 35 so as to be lined up in the vertical direction, and the openings 35a and 35b are opened. Four openings 35c are opened on both sides of the. Four bolts 37 are attached to the opening 35c of the support frame 35, and the bolts 37 are inserted into the opening 36e of the support 36.

In the state shown in FIGS. 9 to 12, the bolt 37 is tightened while the bolt 37 is located at the upper end of the opening 36e of the support portion 36, and the four bolts 38 are the connecting portion 36b of the support portion 36 and the connecting portion 36b. It is in a state of being inserted into the opening 35a of the support frame 35 and tightened.

In the state shown in FIGS. 2, 3 and 9, the mounting height of the transport device 7 to the threshing device 4 is set to a low position, and the support portion 36 is connected to the support frame 35 by eight bolts 37 and 38. ing.

The right portion (left portion) of the drive shaft 20 is rotatably supported by the boss portion 36a, and the drive shaft 20 is supported concentrically with the shaft core P1 by the support portion 36. Is supported around the shaft core P1 (drive shaft 20) so as to be movable up and down.

(Streshing device configuration)
As shown in FIGS. 2 and 3, the threshing device 4 is provided with a handling chamber 43, a handling cylinder 44, a receiving net 45, a sorting unit 46, a wall insert 47, and the like.

The handling cylinder 44 is rotatably supported around the shaft core P2, which is the front-rear shaft core along the front-rear direction, and is supported by the handling chamber 43. A handling processing unit 49 is provided at the rear of the 44. As shown in FIG. 4, the drive shaft 50 is connected to the front portion of the handling cylinder 44, the bevel gear 50a of the drive shaft 50 meshes with the bevel gear 23c of the transmission shaft 23, and the handling cylinder is driven by the power of the transmission shaft 23. 44 is rotationally driven clockwise in FIG.

As shown in FIGS. 2 and 3, in the scraping portion 48 of the handling cylinder 44, a conical cylindrical base portion 48a centered on the shaft core P2 is provided, and the spiral blade 48b is attached to the base portion 48a. It is provided on the outer peripheral portion.

In the handling processing section 49 of the handling cylinder 44, a plurality of round pipe-shaped rod members 49a are arranged along the circumferential direction with the axis P2 as the center, and extend along the front-rear direction, and have a round bar shape. A large number of handling teeth 49b are attached to the rod member 49a and extend outward in the radial direction.

With the above configuration, all the culms of the crops transported by the transport device 7 are scraped by the spiral blades 48b of the scraping portion 48 as the handling cylinder 44 rotates, and are thrown into the handling chamber 43. The crop is threshed by the handling unit 49 of the handling cylinder 44.

The receiving net 45 is formed in a grid pattern by an elongated plate material and a bar material, and is formed in a semi-cylindrical shape as a whole, and is provided around the lower portion of the handling cylinder 44.
The sorting unit 46 is provided below the receiving net 45, and the sorting unit 46 is provided with a Glenpan 51, a chaff sheave 52, a straw rack 53, a Glen sheave 54, a first product collection unit 55, and a second product collection unit 56. ..

A wall insert 47 is provided in front of the sorting unit 46, and the sorting wind is supplied from the wall insert 47 to the sorting unit 46. In the sorting unit 46, the processed material from the receiving net 45 is sorted, and the grains collected in the first product collecting unit 55 are transported to the grain tank 5 and stored in the grain tank 5. The collected processed material is returned to the handling chamber 43.

(Structure of information section)
As shown in FIGS. 2, 3 and 9, the entrance 57 of the threshing device 4 is formed in a horizontally long rectangular shape (rectangular shape) between the right and left support frames 35.

The guide portion 58 is provided below the scraping portion 48 of the handling cylinder 44 in a side view, and the guide portion 58 is a rear end portion (transport) of the bottom portion of the transport device 7 (convey case 12) in a side view. It is provided over the lower side portion of the outlet 7a of the device 7 (the lower side portion 57a of the inlet 57 of the threshing device 4) and the front end portion of the receiving net 45.

As shown in FIGS. 13 and 14, the guide portion 58 has a triangular left-right central portion 58a in plan view and front view, and a triangular right lateral portion 58b and left lateral portion 58c in front view and side view. The left and right central portions 58a are provided so as to extend diagonally upward and backward in a lateral view. The upper side portion of the right horizontal portion 58b and the upper side portion of the left horizontal portion 58c are formed in an arc shape so as to follow the rotation locus of the spiral blade 48b of the scraping portion 48 in front view.

(Structure of induction part)
As shown in FIGS. 13 and 14, the left and right central portions 58a, which are the right corners of the guide portion 58, and the right lateral portion 58b are formed so as to bulge toward the left and right central portions 58a of the guide portion 58. The guided guide portion 59 is provided. The right corner of the guide portion 58 is located on the lower side in the rotation direction of the handling cylinder 44 (scraping portion 48).

The upper end portion 59a of the guide portion 59 is formed in an inclined shape so as to follow the rotation locus of the spiral blade 48b of the scraping portion 48 and the upper side portion of the right lateral portion 58b of the guide portion 58 in front view. The upper end portion 59a of the guide portion 59 is arranged close to the rotation locus of the spiral blade 48b of the scraping portion 48 and the upper side portion of the right lateral portion 58b of the guide portion 58.

The handling cylinder 44 (in a plan view) so that the crops introduced from the transport device 7 are guided toward the left and right central portions 58a of the guide portion 58 in the portion of the guide portion 59 facing the left and right central portions 58a of the guide portion 58. A guide surface 59b inclined with respect to the shaft core P2 of the scraping portion 48) is provided. The upper surface portion 59c of the guide portion 59 is formed in an inclined state in which the upper surface portion 59c becomes higher toward the rear side closer to the handling chamber 43 in a side view.

(Structure near the entrance of the threshing device)
As shown in FIGS. 2 and 3, the wall insert 47 (see the above-mentioned (configuration of the threshing device)) is provided in front of the sorting unit 46 and below the guide unit 58. The guide portion 58 and the wall insert case 60 for accommodating the wall insert 47 are adjacent to each other in the vertical direction.
As shown in FIG. 9, the width W3 of the outlet 7a of the transport device 7 connected to the inlet 57 of the threshing device 4 is set to be larger than the width W4 of the handling cylinder 44.

As shown in FIGS. 2 and 3, the lower end portion of the receiving net 45 and the rear end portion of the guide portion 58 are located at the same height in the side view. In this case, it is assumed that the virtual line A1 extends forward along the horizontal direction from the lower end portion (rear end portion of the guide portion 58) of the receiving net 45 in the side view.

The shaft core P1 of the feed member 14 of the transport device 7 is arranged at a position lower than the virtual line A1 in the side view, and the shaft core P1 of the feed member 14 of the transport device 7 is in the side view and the receiving net 45. It is located at a lower position than. The axis P1 of the feed member 14 of the transport device 7 is arranged at a position lower than the rotation locus of the spiral blade 48b of the scraping portion 48 in the side view.

In a side view, the first vertical distance W1 between the virtual line A1 and the front end portion of the guide portion 58 is the second between the virtual line A1 and the lower end portion of the front end portion of the base portion 48a of the scraping portion 48. It is set to be larger than the vertical interval W2.
The lower end of the rotation locus of the spiral blade 48b of the scraping portion 48 is arranged at a position lower than the upper end portion 57b of the inlet 57 of the threshing device 4 in a side view.

(Crop flow from transport device to threshing device)
As shown in the above-mentioned (driving configuration of the transport device) and FIGS. 2, 3 and 4, the crops harvested by the harvesting unit 6 are transferred from the front end portion to the rear portion of the transport case 12 by the transport mechanism 13 in the transport device 7. It is transported substantially linearly backward along the bottom of the transport case 12, and is fed from the outlet 7a of the transport device 7 (rear end of the transport case 12) to the inlet 57 of the threshing device 4 by the feed member 14. Therefore, it is thrown diagonally upward and backward toward the handling chamber 43 from the entrance 57 of the threshing device 4.

The crops thrown into the entrance 57 of the threshing device 4 are viewed from below the scraping portion 48 along the guide portion 58, along a direction close to the direction orthogonal to the axis P2 of the handling cylinder 44. It is in a state where it is thrown toward the lower surface of the scraping portion 48.

When the crop is thrown in as described above, the crop is likely to enter between the adjacent spiral blades 48b and the spiral blades 48b of the scraping portion 48, and the crop is directed toward the handling chamber 43 by the guide portion 58. As the handling cylinder 44 rotates, it is scraped into the handling chamber 43 so as to be pushed backward by the rear surface of the spiral blade 48b of the scraping portion 48.

In this case, as shown in FIGS. 13 and 14, the rotation of the handling cylinder 44 (scraping portion 48) makes it easy for the crop to flow to the lower side in the rotation direction of the scraping portion 48, and the crop is on the right side of the guide portion 58. It is thought that it tends to stay in the corners. Since the right corner of the guide portion 58 is far from the spiral blade 48b of the scraping portion 48, it is considered that the spiral blade 48b of the scraping portion 48 is difficult to reach.

Since the guide portion 59 is provided at the right corner of the guide portion 58, the portion where the spiral blade 48b of the scraping portion 48 is difficult to reach is reduced by the presence of the guide portion 59, and the spiral of the scraping portion 48 is formed. The blades 48b can easily reach the crop.

When the crop is scraped into the handling chamber 43 by the spiral blade 48b of the scraping portion 48, the crop is guided toward the left and right central portions 58a of the guide portion 58 by the guide surface 59b of the guide portion 59, and the crop. The crop is smoothly scraped into the handling chamber 43 by the spiral blade 48b of the scraping portion 48 due to the point that the crop flows toward the handling chamber 43 along the upper surface portion 59c of the guiding portion 59.

(Structure of elevating mechanism)
As shown in FIGS. 9, 11 and 12, right and left elevating mechanisms 42 are provided below the right and left support portions 36 described in the above (configuration of attachment to the threshing device in the transport device). There is.

A support plate 39 is connected to a portion of the support frame 35 below the support portion 36, a nut 40 is attached to the support plate 39, and a bolt 41 is inserted into the nut 40. As described above, the elevating mechanism 42 has a support plate 39, a nut 40, a bolt 41, and the like.

As described below, the mounting height of the transport device 7 to the threshing device 4 can be changed from a low position to a high position.
As shown in FIGS. 9 to 12, by removing the four bolts 38 and loosening the four bolts 37 a little, the support portion 36 is maintained along the support frame 35 while being kept in a state where the support portion 36 is not separated from the support frame 35. And make it movable upward.

In the above-mentioned state, the bolt 41 is rotated and the receiving portion 36d of the support portion 36 is pushed upward by the upper end portion of the bolt 41. When the support portion 36 is pushed up and the bolt 37 reaches the lower end of the opening 36e of the support portion 36, the bolt 37 is tightened and the four bolts 38 that have been removed are attached to the connecting portion 36b of the support portion 36 and the connecting portion 36b of the support portion 36. It is inserted into the opening 35b of the support frame 35 and tightened.

As a result, the mounting height of the transport device 7 to the threshing device 4 is set to a high position. When changing the mounting height of the transport device 7 to the threshing device 4 from a high position to a low position, the same operation as described above may be performed, and the bolt 41 is rotated in the reverse direction to lower the support portion 36. Just do it.

As described above, the mounting height of the transport device 7 to the threshing device 4 is such that the position of the crop outlet 7a of the transport device 7 is changed along the vertical direction with respect to the crop inlet 57 of the threshing device 4. An elevating mechanism 42 that can change the height is provided.

(The state near the entrance of the threshing device when the mounting height of the transport device to the threshing device is set to a high position)
As described in the above (configuration of the elevating mechanism), when the mounting height of the transport device 7 to the threshing device 4 is set to a high position, the lower side member 61 having a cross-sectional channel shape is used as the inlet 57 of the threshing device 4. By attaching to the lower side portion 57a, the lower side member 61 may be the lower side portion 57a of the inlet 57 of the threshing device 4. As a result, the height of the lower side portion 57a of the entrance 57 of the threshing device 4 can be changed by attaching and detaching the lower side member 61.

When the mounting height of the transport device 7 to the threshing device 4 is set to a high position, the guide portion 58 may be replaced with another guide portion 58 in the same manner, and the height of the front end portion of the guide portion 58 may be replaced. Can be changed.

As shown in FIG. 15, when the mounting height of the transport device 7 to the threshing device 4 is set to a high position, the transport device 7 (conveyor case 12) is formed by mounting the lower side member 61 and replacing the guide portion 58. The rear end portion (lower side portion of the outlet 7a of the transport device 7), the lower side portion 57a (lower side member 61) of the entrance 57 of the threshing device 4, and the front end portion of the guide portion 58 are continuous with few steps. It can be configured to be connected.

Even when the mounting height of the transfer device 7 to the threshing device 4 is set to a high position, the axis P1 of the feed member 14 of the transfer device 7 is lower than the virtual line A1 (see FIG. 3) in side view. It is arranged at a position, and the axis P1 of the feed member 14 of the transport device 7 is arranged at a position lower than the receiving net 45 in the side view. The axis P1 of the feed member 14 of the transport device 7 is arranged at a position lower than the rotation locus of the spiral blade 48b of the scraping portion 48 in the side view.

(First Different Form of Implementation of the Invention)
As shown in FIG. 16, in the transport device 7, the feed member 14 (see FIGS. 2 and 3) may be removed from the drive shaft 20 and the sprocket 16 of the transport mechanism 13 may be attached to the drive shaft 20. As a result, in the transport device 7, the feed member 14 is removed, and the rear end portion of the transport mechanism 13 can be switched to a state of being attached to the drive shaft 20.
In this configuration, the sprocket 16 and the transport body 18 of the transport mechanism 13 are rotating members provided at the rear of the transport device 7.

(Second alternative form of carrying out the invention)
In the handling cylinder 44, the base portion 48a of the scraping portion 48 may be configured not as a conical cylinder but as a cylinder having the same radius in the front-rear direction.
In the handling cylinder 44, the boundary portion between the scraping portion 48 and the handling portion 49 is behind the front end portion of the receiving net 45 in side view (inside the handling chamber 43) as shown in FIGS. 2 and 3. ), But the boundary portion between the scraping portion 48 and the handling processing portion 49 may be arranged at the same position as the front end portion of the receiving net 45 in a side view.

(Third alternative form of carrying out the invention)
In the transfer device 7, the feed member 14 and the transfer mechanism 13 may be rotationally driven at the same speed without deceleration by the transmission chain 28.

(Fourth Different Embodiment of the Invention)
The feed member 14 may be configured by using four blade members 19, or may be configured by using five or more blade members 19.

(Fifth alternative form of carrying out the invention)
The feed member 14 may be configured such that a flat plate-shaped blade member 19 is radially attached to a round pipe-shaped shaft portion (not shown).
In this configuration, the drive shaft 20 may be configured to be attached to the drive shaft 20 by inserting the drive shaft 20 into the shaft portion in the shape of a round pipe of the feed member 14.

The present invention can be applied to a harvester that puts all the culms of the harvested crop into a threshing device.

1 Aircraft 4 Threshing device 6 Harvesting part 7 Transporting device 12 Transporting case 12a Right part 12b Left part 13 Transporting mechanism 14 Feeding member 14a Space 19 Blade member 20 Drive shaft 21 Boss member 22 Engine 28 Transmission chain (transmission mechanism)
32 Reverse clutch (reverse mechanism)
33 Top plate member 57 Entrance P1 Left and right axis

Claims (10)

A harvesting section installed at the front of the aircraft to harvest crops in the field,
A transport device connected to the harvesting section and transporting the crops harvested by the harvesting section to the rear.
It is equipped with a threshing device that receives all the culms of the crops transported by the transport device and threshs them.
To the transfer device
A transport case provided over the harvesting section and the entrance of the threshing device,
Inside the transport case, the crops harvested by the harvesting section are moved backward by being provided in a state extending over the front end portion and the rear portion of the transport case and rotationally driven along the front-rear direction of the transport case. The transport mechanism to transport and
Inside the transport case, it is provided in a state of being located on the rear side of the rear end of the transport mechanism, and is rotationally driven around the left and right axis along the left-right direction to transfer crops from the transport mechanism. A harvester provided with a feeding member to be inserted into the entrance of the threshing device. The harvester according to claim 1, wherein the transport mechanism is rotationally driven at a lower speed than the feed member. The harvester according to claim 1 or 2, wherein the harvesting section and the transport device are supported so as to be movable up and down around the left and right axis. The drive shaft is rotatably supported so as to be concentric with the left and right shaft cores.
The feed member is attached to the drive shaft and
The harvester according to any one of claims 1 to 3, wherein the power of the engine is transmitted to the drive shaft, and the feed member is rotationally driven by the drive shaft. To the feed member
A plurality of blade members combined so that a space along the left-right direction is formed in the center and extends outward along the radial direction from the space.
A boss member attached over the outer surface of the drive shaft and the blade member is provided so that the drive shaft and the blade member rotate integrally with the drive shaft passed through the space. The harvester according to claim 4. The harvester according to claim 4 or 5, further comprising a transmission mechanism capable of transmitting power transmitted to the drive shaft to the transfer mechanism. The power transmitted to the drive shaft is decelerated by the transmission mechanism and transmitted to the transfer mechanism.
The harvester according to claim 6, wherein the transport mechanism is rotationally driven at a lower speed than the feed member. The harvester according to any one of claims 4 to 7, wherein a reversing mechanism capable of transmitting reversing power to the drive shaft is provided. The harvester according to any one of claims 4 to 8, wherein the feed member is removed and the rear end portion of the transport mechanism can be switched to a state of being attached to the drive shaft. Any one of claims 1 to 9, which is provided on the upper surface portion of the transport case so as to be detachably provided, and is provided with a top plate member capable of opening the upper surface portion over the right portion and the left portion of the transport case. The harvester described in paragraph 1.

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