JP2022011422A - Combine harvester - Google Patents

Abstract

To provide a combine harvester which can prevent oil dropped from a feed chain from attaching to another device (such as, a belt type power transmission mechanism for transmitting drive from an engine to a reaping unit) provided below the feed chain.SOLUTION: A combine harvester includes a threshing device for threshing reaped grain culm, a feed chain 8 which is arranged at a lateral side of the threshing device and transports the reaped grain culm, and an oil receiving section 70 which is arranged below the feed chain 8 and receives oil dropped from the feed chain 8.SELECTED DRAWING: Figure 4

Description

The present invention relates to a combine comprising a threshing device for threshing a harvested culm and a feed chain provided laterally to the threshing device to transport the harvested culm.

This type of combine lubricates the feed chain as needed to allow the feed chain to rotate smoothly. The conventional combine has a configuration in which oil is lubricated to a threshing feed chain (corresponding to the "feed chain" of the present invention) that transports grain culms (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2008-005710

However, in the conventional combine, other devices (for example, a belt-type power transmission mechanism that transmits the drive from the engine to the cutting section) are arranged below the feed chain, and the oil that has fallen from the feed chain is removed. , May adhere to other devices.

Therefore, in view of the above problems, it is an object of the present invention to provide a combine that can prevent oil that has fallen from the feed chain from adhering to other devices provided below the feed chain.

The combine of the present invention is a combine including a threshing device for threshing a harvested grain harvester and a feed chain provided on the lateral side of the threshing device for transporting the harvested grain harvester. It is provided at the bottom and is provided with an oil receiving portion that receives the oil that has fallen from the feed chain.

According to the present invention, since the oil that has fallen from the feed chain is received by the oil receiving portion, it is possible to prevent the oil from falling below the oil receiving portion. As a result, it is possible to prevent the oil that has fallen from the feed chain from adhering to other devices provided below the feed chain.

In the present invention, the lateral side wall of the threshing device, the feed chain, and the side cover that covers the oil receiving portion from the lateral outside are provided, and the oil receiving portion receives the oil with the lateral side wall and the side cover. It is preferable that it is configured to be dropped through the space.

According to this configuration, the oil received by the oil receiving portion can be dropped, and it is possible to prevent the oil from continuing to accumulate in the oil receiving portion. Further, since the oil falls between the lateral side wall of the threshing device and the side cover, it is difficult for the oil to scatter to the outside of the side cover when the oil falls.

In the present invention, it is preferable that the oil receiving portion has a guide portion that is formed in a cross-sectional shape that is inclined downward toward the side cover when viewed along the front-rear direction and guides the received oil downward. be.

According to this configuration, the oil received by the oil receiving portion flows down along the guide portion toward the side cover, so that the oil can be smoothly dropped. Further, since the oil is guided to the side cover side opposite to the threshing device with respect to the oil receiving portion, it is possible to prevent the oil from adhering to the threshing device.

In the present invention, the side cover is vertically divided into an upper cover body and a lower cover body, and is configured on the upper part of the lower cover body from the lower end portion of the upper cover body when viewed in the front-rear direction. The oil receiving portion is provided with an inclined surface formed in a cross-sectional shape that is inclined laterally inward so as to enter below the oil receiving portion from a lower position, and the oil receiving portion receives the received oil on the lateral side wall and the upper cover. It is preferable that it is configured to be dropped on the inclined surface through the space between the body and the body.

According to this configuration, the oil received by the oil receiving portion falls on the inclined surface formed so as to enter below the oil receiving portion. Since the inclined surface is inclined laterally inwardly, that is, laterally outwardly downward, the oil that has fallen on the inclined surface is guided to the outside of the side cover. As a result, the oil received by the oil receiving portion can be smoothly discharged to the outside of the side cover.

In the present invention, a feed chain cover provided between the feed chain and the side cover and covering the feed chain from the lateral outside is provided, and the oil receiving portion is supported by the feed chain cover. Suitable.

According to this configuration, the feed chain cover can be used as a member for supporting the oil receiving portion.

In the present invention, it is preferable that the feed chain cover is divided into a front cover body and a rear cover body in the front-rear direction, and the front cover body and the rear cover body are separately detachably configured. Is.

According to this configuration, the front cover body and the rear cover body are each lighter in weight than the feed chain cover integrally configured, and the load of the cover attachment / detachment work can be reduced.

In the present invention, it is preferable that the oil receiving portion is supported by the front cover body.

According to this configuration, the oil receiving portion can be attached and detached together with the front cover body while being supported by the front cover body, so that it is troublesome to separately attach and detach the oil receiving portion and the front cover body. It is possible to reduce the load of attaching / detaching the oil receiving portion and the front cover body.

In the present invention, a cutting unit provided in front of the threshing device and for cutting the planted grain culm is provided, and the cutting unit is a work position for cutting work and the side of the machine on the feed chain side with respect to the work position. It is preferable that the position can be changed to the maintenance position located on the outside, and the cutting part can be changed to the maintenance position with the oil receiving part removed together with the front cover body. Is.

According to this configuration, when the position of the cutting portion is changed to the maintenance position, it is not necessary to remove the entire feed chain cover, and the front cover body may be removed, so that the maintenance work load can be reduced.

In the present invention, it is preferable that the feed chain is removable with the front cover removed.

According to this configuration, in order to remove the feed chain during maintenance work, it is not necessary to remove the entire feed chain cover, and the front cover body can be removed, so that the workload of the maintenance work can be reduced. ..

In the present invention, it is preferable that the oil receiving portion is configured to be removable.

According to this configuration, since the oil receiving part is removable, the cleaning work of the oil receiving part becomes easy, and if it deteriorates due to long-term use, it can be easily replaced. Can be done.

In the present invention, it is preferable that a belt-type power transmission mechanism is provided below the oil receiving portion.

According to this configuration, since the belt-type power transmission mechanism is provided below the oil receiving portion, it is possible to prevent the oil that has fallen from the feed chain from adhering to the power transmission mechanism.

In the present invention, it is preferable that the feed chain is provided in a front-down state, and the oil receiving portion is arranged below the front end portion of the feed chain.

According to this configuration, the oil lubricated to the feed chain provided in the front-down state easily collects at the front end portion of the feed chain along the feed chain. Then, by providing the oil receiving portion below the front end portion of the feed chain, the oil that has fallen from the feed chain can be efficiently received.

In the present invention, the oil receiving portion is arranged below a sprocket provided at the front end portion of the feed chain, and the oil receiving portion is formed in a shape that is inclined backward downward in a side view, and the oil receiving portion is formed. It is preferable that the front portion of the portion is inclined backward and downward at a steeper angle than the rear portion of the oil receiving portion so as to surround the sprocket from the front lower part.

According to this configuration, in the vicinity of the sprocket where oil tends to be scattered forward from the feed chain due to centrifugal force or the like, the front part of the oil receiving part is inclined backward at a steeper angle than the rear part of the oil receiving part. With the configuration, the front side portion of the oil receiving portion is configured to surround the sprocket from the front lower part, so that the oil scattered from the feed chain can be received by the front side portion of the oil receiving portion. Further, since the oil receiving portion is formed in a shape that inclines downward from the side view, all the received oil flows backward, so that it is possible to prevent the oil from accumulating on the oil receiving portion. ..

In the present invention, it is preferable that the oil receiving portion is formed so that the width of the rear end portion of the oil receiving portion is narrower than the width of the front end portion of the oil receiving portion in a plan view. ..

According to this configuration, the width of the rear end portion of the oil receiving portion is formed to be narrower than the width of the front end portion, so that interference with the members around the oil receiving portion is avoided. Also, at the front end, which is wider than the rear end, it is possible to catch the oil that has fallen from the feed chain in a wider range.

It is a left side view showing a head-feeding combine. It is a top view which shows the head-feeding combine. It is a left side sectional view which shows the cross section of a threshing apparatus. It is a left side view which shows a feed chain and a power transmission mechanism. It is a left side view which shows the feed chain and the oil receiving part. It is a disassembled left side view which shows a feed chain cover and an oil receiving part. It is a right side view which shows the feed chain cover and the oil receiving part. It is a rear view which shows the feed chain cover and the oil receiving part. FIG. 5 is a cross-sectional view taken along the line IX-IX of FIG. It is a top view which shows the state which the oil receiving part was removed together with the front cover body.

Hereinafter, a case where the embodiment of the combine according to the present invention is applied to a head-feeding combine will be described with reference to the drawings. In this embodiment, when defining the front-rear direction of the traveling aircraft of the combine, it is defined along the traveling direction of the aircraft in the working state, and when defining the left-right direction of the aircraft, it is left and right as viewed from the traveling direction of the aircraft. Is defined. That is, the direction indicated by the reference numeral (F) in FIG. 1 and the like is the front side of the aircraft, the direction indicated by the reference numeral (B) is the rear side of the aircraft, the direction indicated by the reference numeral (L) is the left side of the aircraft, and the direction indicated by the reference numeral (R) is the right side of the aircraft. Is.

[Overall configuration]
As shown in FIGS. 1 and 2, the head-feeding combine includes an airframe frame 1 and a traveling device 2 that supports the airframe frame 1. A cabin 3 is provided on the right side of the front part of the aircraft. The cabin 3 includes a driving unit 4 on which the driver is boarded. An engine E is provided below the driving unit 4.

In front of the cabin 3, a cutting section 5 for cutting the planted culm is provided. Behind the cabin 3, a threshing device 6 for threshing the culms cut by the cutting section 5 and a grain storage tank 7 for storing grains are arranged in a laterally arranged positional relationship. A grain discharge device 10 for discharging grains in the grain storage tank 7 is provided. The lateral portion of the threshing device 6 is provided with a feed chain 8 for sandwiching and transporting the cut grain culm, and a sandwiching rail 9 provided so as to face the upper side thereof.

The cutting unit 5 is configured to have a plurality of cutting specifications (for example, six-row cutting specifications). The cutting unit 5 includes a plurality of (for example, seven) weeding tools 13, a plurality of (for example, six) raising devices 14, a cutting device 15, and a transport device 16. The weeding tool 13 weeds the planted culm in the field. The raising device 14 causes a weeded planted culm. The cutting device 15 cuts the raised planted culm. The transport device 16 transports the harvested grain culm backward toward the threshing device 6. The cutting unit 5 is configured to be repositionable to a work position for cutting work and a maintenance position located on the lateral outer side of the machine body on the feed chain 8 side with respect to the work position. In the present embodiment, the cutting portion 5 is configured to swing around a swinging shaft X extending in the vertical direction so that the position can be changed between a working position and a maintenance position.

[About the power transmission mechanism]
Below the front portion of the feed chain 8, a belt-type power transmission mechanism 60 for transmitting power from the engine E to the cutting unit 5 is provided. A continuously variable transmission 65 for cutting that continuously changes the power from the engine E is provided. The continuously variable transmission 65 is composed of a hydrostatic type continuously variable transmission. As shown in FIG. 4, the power transmission mechanism 60 includes an output shaft 64a, an output pulley 64, a transmission belt 62, and a cutting input pulley 61. The output pulley 64 is provided on the output shaft 64a of the continuously variable transmission 65. The cutting input pulley 61 is provided on the lateral transmission shaft 61a provided in the cutting portion 5. The transmission belt 62 is wound around an output pulley 64 and a cutting input pulley 61. The power after shifting the output of the engine E by the continuously variable transmission 65 for cutting is transmitted to the output pulley 64 via the output shaft 64a. The power transmitted to the output pulley 64 is transmitted to the cutting input pulley 61 by the transmission belt 62, and is transmitted to the lateral transmission shaft 61a. Then, power is transmitted to each portion of the cutting portion 5 via the lateral transmission shaft 61a. Further, the cutting input pulley 61 is covered with an input pulley cover 63.

[About threshing equipment]
As shown in FIG. 3, the threshing device 6 has a handling cylinder 18 and threshing the cut grain culms conveyed by the feed chain 8 in the handling chamber 17. A straw-removing transport device 11 is continuously provided on the rear side of the threshing device 6. The straw-removing transport device 11 receives the straw after the threshing process from the feed chain 8 and sandwiches and transports it backward. The straw-removing transport device 11 is supported by a straw-removing frame (not shown). A straw cutting device 12 for cutting the straw transported by the straw transporting device 11 is provided below the portion on the transporting end side of the straw transporting device 11. The handling chamber 17 is provided with a handling cylinder 18. The handling cylinder 18 is rotatable around a rotation axis Y1 extending in the front-rear direction of the machine body.

At the lower part of the threshing device 6, a swing sorting device 22 that sorts the threshed products from the handling chamber 17 and swings and sorts the sorting target is provided, and a wall insert that blows the sorting air to the swing sorting device 22. 23, the first collection unit 24 for collecting the first grain (single grain, etc.), the second collection unit 25 for collecting the second grain (grain with threshing, etc.), etc. are provided. Has been done.

As shown in FIG. 1, a side cover 19 is provided on the outermost side of the machine body on the lateral side (left side) of the threshing device 6 on the side where the feed chain 8 is located. The side cover 19 has an upper cover body 19a constituting the upper portion of the side cover 19 and a lower cover body 19b constituting the lower portion of the side cover 19, and is configured to be vertically divided. .. The side cover 19 is configured to be removable. The upper cover body 19a and the lower cover body 19b are respectively divided into front and rear parts.

[About the feed chain]
As shown in FIG. 1, a transmission case 30 is provided on the left outer side at the rear position of the threshing device 6. The transmission case 30 is provided with a drive sprocket 31. The feed chain 8 is wound around the drive sprocket 31 and the front driven sprocket 32 (see FIG. 4). The transmission case 30 is provided with an input pulley 33. The driving force from the engine E is transmitted to the input pulley 33 via a transmission belt (not shown).

As shown in FIGS. 4 and 5, a guide frame 35 that guides and supports the feed chain 8 is provided between the drive sprocket 31 (see FIG. 1) and the driven sprocket 32. The guide frame 35 guides and supports the portion of the feed chain 8 corresponding to the upper path. The guide frame 35 extends over the transport start end and the transport end in the upper path of the feed chain 8. The front portion of the feed chain 8 is provided with a tension mechanism 37 that applies tension to the feed chain 8.

The upper path of the feed chain 8 is configured to descend from the rear end portion of the upper path toward the front end portion. The lower path of the feed chain 8 is configured to be lowered forward so as to go from the rear end portion of the lower path toward the portion in contact with the tension mechanism 37. That is, the feed chain 8 is provided in a state of being lowered forward.

The feed chain 8 is provided with an automatic lubrication device 36 that automatically lubricates the feed chain 8 with lubricating oil. The automatic lubrication device 36 is provided with a nozzle 36a for discharging lubricating oil above the feed chain 8 in the lower path of the feed chain 8. The nozzle 36a discharges lubricating oil toward the feed chain 8 and lubricates the feed chain 8.

[About feed chain cover]
A feed chain cover 40 that covers the feed chain 8 from the outside is provided on the lateral side of the feed chain 8. The feed chain cover 40 is provided between the feed chain 8 and the side cover 19, and is arranged below the feed chain 8 and the holding rail 9 and in a state close to the lateral outer portion of the feed chain 8. ..

As shown in FIG. 6, the feed chain cover 40 is formed into two front and rear parts, and is composed of a front cover body 40a on the front side and a rear cover body 40b on the rear side. A bent portion 43 that bends toward the lateral inner side (right side) of the machine body is formed at the front end portion of the front cover body 40a. The bent portion 43 is located behind the left side wall of the input pulley cover 63.

The front cover body 40a and the rear cover body 40b are fastened and fixed to the guide frame 35 by fasteners 41 using a plurality of bolts or the like. The fastener 41 located on the rearmost cover body 40b side of the plurality of fasteners 41 for fixing the front cover body 40a, and the fastener 41 located on the frontmost cover body 40a side of the plurality of fasteners 41 for fixing the rear cover body 40b. The fastener 41 to be used is fixed to one support member 42. That is, the feed chain cover 40 is configured to be disassembled into a front cover body 40a and a rear cover body 40b at a portion corresponding to the support member 42. The fastener 41 can be fastened and released from the left side. By fastening and unfastening the fastener 41, the front cover body 40a and the rear cover body 40b can be attached and detached. The front cover body 40a and the rear cover body 40b are each detachable and detachable.

[About the oil receiving part]
As shown in FIG. 5, below the front end portion of the feed chain 8, the oil W that has fallen from the feed chain 8 (lubricating oil lubricated to the automatic lubrication device 36 or manually lubricated to the feed chain 8). An oil receiving portion 70 for receiving the lubricating oil) is provided. The oil receiving portion 70 is provided below the driven sprocket 32 in the front cover body 40a.

As shown in FIG. 6, the oil receiving portion 70 is supported by the front cover body 40a. The oil receiving portion 70 is fixed to the front cover body 40a by fasteners 75 using a plurality of bolts or the like. The fastener 75 can be fastened and released. By fastening and unfastening the fastener 75, the oil receiving portion 70 can be attached and detached from the front cover body 40a.

As shown in FIGS. 7 and 8, the oil receiving portion 70 is composed of a plate-shaped member. The oil receiving portion 70 is formed with a completely missing portion 71a extending in the front-rear direction of the machine body on the feed chain cover 40 side of the oil receiving portion 70. A second notch 71b extending in the front-rear direction of the machine body is formed on a portion opposite to the first notch 71a. In the oil receiving portion 70, the width of the rear end portion of the oil receiving portion 70 becomes narrower than the width of the front end portion of the oil receiving portion 70 in a plan view due to the first notch portion 71a and the second notch portion 71b. It is formed in a shape. Since the completely missing portion 71a is formed in the oil receiving portion 70, a gap S is formed between the feed chain cover 40 and the oil receiving portion 70.

The oil receiving unit 70 has a guide unit 73 that guides the received oil W downward. The oil receiving portion 70 is provided with an eaves portion 74 substantially perpendicular to the surface of the guide portion 73 so as to be along the edge portion of the first completely missing portion 71a. The guide portion 73 is formed in a cross-sectional shape that is inclined downward toward the side cover 19 side (left side) when viewed along the front-rear direction. The oil receiving portion 70 is attached to the front cover body 40a in a state of being inclined backward downward in the side view. A bent portion 72c is formed in the oil receiving portion 70. The oil receiving portion 70 has a first inclined portion 72a on the front side of the bent portion 72c of the oil receiving portion 70, and a second inclined portion 72b on the rear side of the bent portion 72c of the oil receiving portion 70. There is. The first inclined portion 72a is inclined backward and downward at a steeper angle than the second inclined portion 72b. Further, the first inclined portion 72a is configured to surround the driven sprocket 32 provided at the front end portion of the feed chain 8 from the front lower part.

As shown in FIG. 9, the side cover 19 is configured to cover the lateral side wall of the threshing device 6, the feed chain 8, and the oil receiving portion 70 from the lateral outside (left side). The upper part of the lower cover body 19b has a cross-sectional shape that is inclined laterally inward (right side) so as to enter below the oil receiving portion 70 from a position below the lower end portion of the upper cover body 19a when viewed along the front-rear direction. The formed inclined surface 76 is provided.

The oil receiving portion 70 guides the received oil W downward from the gap S through the eaves portion 74 by the guide portion 73. The oil receiving portion 70 drops the oil W through between the lateral side wall of the threshing device 6 and the side cover 19, and further drops it on the inclined surface 76 of the lower cover body 19b so as to guide the oil W to the outside of the machine body. It is configured. With this configuration, it is possible to prevent the oil W that has fallen from the feed chain 8 from falling to the power transmission mechanism 60 or the like provided below the oil receiving portion 70.

As shown in FIG. 10, when the cutting section 5 changes its position from the working position to the maintenance position, the cutting section 5 swings around the swing axis X. Here, when the cutting portion 5 is swung around the swing shaft core X with the front cover body 40a attached to the lateral outer portion of the guide frame 35, the upper end portion of the left side wall of the input pulley cover 63 is formed. The rear end portion and the front end portion of the oil receiving portion 70 come into contact with each other, and the rear end portion of the left side wall of the input pulley cover 63 and the bent portion 43 come into contact with each other. As a result, when the front cover body 40a is attached to the lateral portion of the feed chain 8, the cutting portion 5 cannot be repositioned from the working position to the maintenance position.

Therefore, by removing the front cover body 40a from the lateral outer portion of the guide frame 35 and removing the oil receiving portion 70 together with the front cover body 40a, the cutting portion 5 is swung around the swing shaft core X. However, the rear end portion of the upper end portion of the left side wall of the input pulley cover 63 and the front end portion of the oil receiving portion 70 do not come into contact with each other, and the rear end portion of the left side wall of the input pulley cover 63 and the bent portion 43 are in contact with each other. I will not touch you.

[Another Embodiment]
Hereinafter, another embodiment in which the above embodiment is modified will be illustrated. The following alternative embodiments may be applied to the above embodiment in combination as long as there is no contradiction. The scope of the present invention is not limited to the contents of each embodiment.

(1) In the above embodiment, the oil receiving portion 70 has been described based on an example configured to drop the received oil W through between the lateral side wall of the threshing device 6 and the side cover 19. The invention is not limited to the above embodiment. For example, the oil receiving portion 70 may be configured to directly drop the received oil W to the outside of the machine body.

(2) In the above embodiment, the configuration in which the oil receiving portion 70 has a guide portion 73 that inclines downward toward the side cover 19 and guides the received oil W downward has been described as an example. Is not limited to the above embodiment. For example, the guide portion 73 may be configured to guide the oil W received by tilting downward on the lateral side wall side of the threshing device 6 downward.

(3) In the above embodiment, the oil receiving portion 70 is configured to drop the received oil W onto the inclined surface 76 through between the lateral side wall of the threshing device 6 and the upper cover body 19a of the side cover 19. Although described with reference to an example, the present invention is not limited to the above embodiment. For example, the oil receiving portion 70 may be configured to directly drop the received oil W to the ground through between the lateral side wall of the threshing device 6 and the upper cover body 19a of the side cover 19.

(4) In the above embodiment, the configuration in which the oil receiving portion 70 is supported by the feed chain cover 40 has been described as an example, but the present invention is not limited to the above embodiment. For example, the oil receiving portion 70 may be supported by the lateral side wall of the threshing device 6.

(5) In the above embodiment, the feed chain cover 40 has been described based on an example in which the front cover body 40a and the rear cover body 40b are divided into front and rear parts, but the present invention is limited to the above embodiment. It is not something that can be done. For example, the feed chain cover 40 may be integrally configured, or may be divided into three or more.

(6) In the above embodiment, the front cover body 40a and the rear cover body 40b have been described based on an example in which they are separately detachably configured, but the present invention is not limited to the above embodiment. For example, only one of them may be configured to be removable.

(7) In the above embodiment, the configuration in which the oil receiving portion 70 is supported by the front cover body 40a has been described as an example, but the present invention is not limited to the above embodiment. For example, the oil receiving portion 70 may be supported by the rear cover body 40b. Further, the oil receiving portion 70 may be supported by each of the front cover body 40a and the rear cover body 40b.

(8) In the above embodiment, the description has been made based on an example in which the feed chain 8 is removably configured with the front cover body 40a removed, but the present invention is not limited to the above embodiment. For example, the feed chain 8 may be removable with the rear cover body 40b removed, and the feed chain 8 may be removed unless the front cover body 40a and the rear cover body 40b are removed. It may be configured so that

(9) In the above embodiment, the oil receiving portion 70 has been described based on an example in which the oil receiving portion 70 is detachably configured, but the present invention is not limited to the above embodiment. For example, the oil receiving portion 70 may be configured so as not to be attached and detached.

(10) In the above embodiment, a configuration in which a belt-type power transmission mechanism 60 is provided below the oil receiving portion 70 has been described as an example, but the present invention is not limited to the above embodiment. For example, a device other than the power transmission mechanism 60 may be provided below the oil receiving portion 70.

(11) In the above embodiment, the configuration in which the oil receiving portion 70 is arranged below the front end portion of the feed chain 8 has been described as an example, but the present invention is not limited to the above embodiment. The oil receiving portion 70 is arranged below the feed chain 8 at a location other than the front end portion of the feed chain 8 (for example, below the rear end portion of the feed chain 8 or below the front / rear center portion of the feed chain 8). It may be configured as such.

(12) In the above embodiment, the front side portion of the oil receiving portion 70 has been described as an example of a configuration in which the front side portion of the oil receiving portion 70 is inclined backward and downward at a steeper angle than the rear side portion of the oil receiving portion 70. It is not limited to the form. The front side portion and the rear side portion of the oil receiving portion 70 may be configured to be inclined at the same angle.

(13) In the above embodiment, the oil receiving portion 70 is formed so that the width of the rear end portion of the oil receiving portion 70 is narrower than the width of the front end portion of the oil receiving portion 70 in a plan view. However, the present invention is not limited to the above embodiment. The oil receiving portion 70 may be configured so that the front end portion and the rear end portion of the oil receiving portion 70 have the same lateral width in a plan view.

(14) Although the example in which one oil receiving portion 70 is provided in the above embodiment has been described, the present invention is not limited to the above embodiment, and a plurality of oil receiving portions 70 may be provided. ..

(15) In the above embodiment, the configuration in which the cutting section 5 can change the position from the working position to the maintenance position by swinging the cutting section 5 around the swing axis X has been described as an example. The invention is not limited to the above embodiment, and for example, the cutting unit 5 may be configured to be able to change the position from the working position to the maintenance position by sliding the cutting unit 5 in the left-right direction of the machine body.

The present invention can be used for head-feeding combine harvesters.

6: Threshing device 8: Feed chain 19: Side cover 19a: Upper cover body 19b: Lower cover body 40: Feed chain cover 40a: Front cover body 40b: Rear cover body 60: Power transmission mechanism 70: Oil receiving part 73: Guide Part 76: Inclined surface W: Oil

Claims (14)

A threshing device that threshes the harvested culm,
A combine that is provided on the lateral side of the threshing device and is provided with a feed chain for transporting harvested culms.
A combine provided below the feed chain and provided with an oil receiving portion for receiving oil that has fallen from the feed chain. A side cover that covers the lateral side wall of the threshing device, the feed chain, and the oil receiving portion from the lateral outside is provided.
The combine according to claim 1, wherein the oil receiving portion is configured to drop the received oil through between the lateral side wall and the side cover. The combine according to claim 2, wherein the oil receiving portion is formed in a cross-sectional shape that is inclined downward toward the side cover when viewed in the front-rear direction, and has a guide portion that guides the received oil downward. The side cover is vertically divided into an upper cover body and a lower cover body.
It is formed on the upper part of the lower cover body in a cross-sectional shape that is inclined laterally inward so as to enter below the oil receiving portion from a position below the lower end portion of the upper cover body when viewed along the front-rear direction. Equipped with a sloping surface,
The combine according to claim 2 or 3, wherein the oil receiving portion is configured to drop the received oil onto the inclined surface through between the lateral side wall and the upper cover body. A feed chain cover provided between the feed chain and the side cover and covering the feed chain from the lateral side is provided.
The combine according to any one of claims 2 to 4, wherein the oil receiving portion is supported by the feed chain cover. The feed chain cover is divided into a front cover body and a rear cover body in the front-rear direction.
The combine according to claim 5, wherein the front cover body and the rear cover body are separately detachably configured. The combine according to claim 6, wherein the oil receiving portion is supported by the front cover body. It is provided in front of the threshing device and has a cutting section for cutting the planted culm.
The cutting section is configured to be repositionable to a work position for cutting work and a maintenance position located on the lateral outer side of the machine on the feed chain side with respect to the work position.
The combine according to claim 7, wherein the harvesting portion can be repositioned to the maintenance position with the oil receiving portion removed together with the front cover body. The combine according to any one of claims 6 to 8, wherein the feed chain is removable with the front cover removed. The combine according to any one of claims 1 to 9, wherein the oil receiving portion is detachably configured. The combine according to any one of claims 1 to 10, wherein a belt-type power transmission mechanism is provided below the oil receiving portion. The feed chain is provided in a state of lowering forward, and is provided.
The combine according to any one of claims 1 to 11, wherein the oil receiving portion is arranged below the front end portion of the feed chain. The oil receiving portion is arranged below the sprocket provided at the front end portion of the feed chain.
The oil receiving portion is formed in a shape that is inclined backward and downward in a side view.
The combine according to claim 12, wherein the front portion of the oil receiving portion is inclined backward and downward at a steeper angle than the rear portion of the oil receiving portion so as to surround the sprocket from the front lower part. One of claims 1 to 13, wherein the oil receiving portion is formed so that the width of the rear end portion of the oil receiving portion is narrower than the width of the front end portion of the oil receiving portion in a plan view. The combine described in the section.

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