JP7706420B2 - combine - Google Patents

Description

The present invention relates to a combine harvester.

Conventionally, a combine harvester such as that described in Patent Document 1 is known. Conventional combine harvesters include a harvesting section (referred to as "the harvesting section [3]" in the literature) that harvests planted culms. The harvesting section includes a plurality of first lifting devices (referred to as "the horizontal lifting devices [16]") having a plurality of first lifting claws (referred to as "the horizontal lifting claws [25]") that rise in a posture along the left-right direction of the machine body and act on the planted culms by lifting them, and a second lifting device (referred to as "the vertical lifting device [17]") that is provided forward of the first lifting devices and has a plurality of second lifting claws (referred to as "the vertical lifting claws [32]") that rise in a posture along the front-rear direction of the machine body and act on the planted culms by lifting them.

JP 2016-67260 A

In conventional combine harvesters, the operator must manually apply lubricating oil to the second lifting device. This makes it time-consuming to apply lubricating oil to the second lifting device.

In light of the above situation, there is a demand for a combine harvester that allows easy application of lubricating oil to the second lifting device.

The present invention is characterized in that a combine harvester is provided with a harvesting section for harvesting planted culms, the harvesting section having a plurality of first raising devices having a plurality of first raising claws that rise in a posture along the left-right direction of the machine body and raise the planted culms, and a second raising device provided forward of the first raising devices and having a plurality of second raising claws that rise in a posture along the front-rear direction of the machine body and raise the planted culms, the second raising device being provided with an oiling device that automatically applies lubricating oil to the second raising device , the second raising device being provided with an upper rotating body that can rotate around a rotation axis extending along the left-right direction of the machine body, a lower rotating body that can rotate around a rotation axis extending along the left-right direction of the machine body, a raising chain wound around the upper rotating body and the lower rotating body, and a lubricating chain wound around the upper rotating body and the lower rotating body. the second lifting claws are attached to the lifting chain in a raisable manner, a rail member is provided along the inner circumference of the lifting path side portion of the lifting chain so as to be rotatable around a swing axis extending along the left-right direction of the body, and maintains the second lifting claws in an upright position relative to the lifting chain, and a lifting case has left and right side plates and houses the upper rotating body, the lower rotating body, the lifting chain and the rail member, the oiling device has an oiling hose for supplying lubricating oil to the second lifting device, and an insertion hole into which the oiling hose is inserted is formed in the lifting case, and the insertion hole is formed at a position avoiding the swing range of the rail member .

According to this feature, the lubricating oil is automatically supplied to the second lifting device by the lubricating device, so that the second lifting device can be easily lubricated with the lubricating oil.
Here, if the insertion hole were formed on the inner periphery of the side plate with respect to the raising chain and within the swing range of the rail member, there is a risk that the rail member and the part of the oiling hose inserted into the insertion hole will come into contact with each other and be damaged when the rail member swings. However, according to this characteristic configuration, the insertion hole is formed on the inner periphery of the side plate with respect to the raising chain and at a position that avoids the swing range of the rail member, so this kind of inconvenience can be avoided.

Furthermore, in the present invention, it is preferable that the lift-up case has an axis member provided between the left side plate and the right side plate, and the insertion hole is formed at a position on the side plate that avoids the axis member.

This characteristic configuration means that the shaft member does not get in the way when forming the insertion hole in the side plate.

Furthermore, in the present invention, it is preferable that the rail member has a groove portion that opens toward the side opposite the lifting path side portion of the lifting chain and extends along the extension direction of the rail member, and that the oiling hose is passed through the inside of the groove portion.

This characteristic configuration allows the inside of the groove to be used as space for passing the oil supply hose.

Furthermore, in the present invention, it is preferable that the rail member has a reinforcing member provided across both side walls of the groove portion, and that the reinforcing member also serves as a member for guiding the oil supply hose.

According to this characteristic configuration, the reinforcing member can be used as a member for guiding the oil supply hose.

Furthermore, in the present invention, it is preferable that the second lifting device has a cam member for swinging the rail member, the rail member has a plurality of grooves arranged in a line along the swing axis direction, the cam member fits into one of the plurality of grooves, and the oiling hose is passed through the inside of a groove other than the groove into which the cam member fits.

This characteristic configuration allows the oil supply hose to be passed through the inside of the groove without interfering with the cam member.

Furthermore, in the present invention, it is preferable that the oil supply hose in the oil supply device is arranged to extend forward from the first lifting device, and a guide member for guiding the oil supply hose is provided in front of the first lifting device.

According to this characteristic configuration, the oil supply hose is arranged so that it extends forward from the first lifting device and is guided by the guide member. This allows the oil supply hose to be arranged in a stable state.

Furthermore, in the present invention, it is preferable that the device has a transmission mechanism that transmits the power of the first lifting device to the second lifting device, and is provided with a transmission case that is provided between the first lifting device and the second lifting device, and the oil supply hose is routed along the transmission case.

This characteristic configuration makes it easier to support the oil hose on the transmission case. In addition, by supporting the oil hose on the transmission case, which is a relatively rigid member, the oil hose can be firmly supported.

Furthermore, in the present invention, it is preferable that the transmission case is provided across the front portion of the first lifting device and the lateral side portion of the second lifting device on the lifting path side of the first lifting device, and the oil supply hose is routed along the portion of the transmission case opposite the lifting path of the first lifting device.

According to this characteristic configuration, the oiling hose is not positioned on the side of the lifting path of the first lifting device relative to the transmission case. This makes it possible to prevent the planted stalks moving along the lifting path of the first lifting device from coming into contact with the oiling hose.

Furthermore, in the present invention, it is preferable that an opening for passing the oil supply hose is formed in the front portion of the first lifting device.

According to this characteristic configuration, by passing the oil supply hose through the opening, the oil supply hose can be arranged to extend forward from the first lifting device without having to detour around the first lifting device.

Furthermore, in the present invention, it is preferable that the end of the transmission case on the side of the first lifting device is inserted into the opening, and the portion of the opening through which the oil supply hose passes is located on the opposite side of the transmission case to the lifting path of the first lifting device.

According to this characteristic configuration, the opening for inserting the end of the transmission case on the side of the first lifting device and the opening for passing the oiling hose are configured as a single opening. This allows for a simpler configuration than a configuration in which two openings are formed separately on the front part of the first lifting device. In addition, the oiling hose is not located on the lifting path side of the first lifting device relative to the transmission case. This makes it possible to prevent the planted stalks moving along the lifting path of the first lifting device from coming into contact with the oiling hose.

Furthermore, in the present invention, it is preferable that a metal relay pipe is provided in the portion of the oil supply hose located inside the first lifting device.

This characteristic configuration allows the metal relay pipe to reduce assembly errors and wobble of the oil supply hose.

Furthermore, in the present invention , it is preferable that the oiling device is provided inside the raising case and has a nozzle for injecting lubricating oil from the oiling hose, and that the nozzle is positioned on the inner side of the raising chain and away from the swinging range of the rail member.

If the nozzle were located on the inner periphery of the raising chain and within the swinging range of the rail member, there is a risk that the rail member and the nozzle may come into contact with each other and be damaged when the rail member swings. However, with this characteristic configuration, the nozzle is located on the inner periphery of the raising chain and outside the swinging range of the rail member, so this kind of inconvenience can be avoided.

Furthermore, in the present invention, it is preferable that the nozzle is configured to inject lubricating oil in a direction opposite to the rail member.

This characteristic configuration makes it possible to prevent the lubricating oil injected from the nozzle from coming into contact with the rail member.

Furthermore, in the present invention, it is preferable that the nozzle is configured to inject lubricating oil directly into the raising chain.

According to this characteristic configuration, the lubricating oil injected from the nozzle is injected directly onto the raising chain. This allows the raising chain to be well lubricated.

Furthermore, in the present invention, it is preferable that the nozzle is configured to inject lubricating oil directly onto the inner circumference of the raising chain.

According to this characteristic configuration, the lubricating oil injected from the nozzle is injected directly onto the inner circumference of the raising chain. This makes it difficult for the second raising claw to get in the way of the oil injection, and the lubricating oil injected from the nozzle is more likely to penetrate from the inner circumference to the outer circumference of the raising chain due to the centrifugal force of the raising chain.

Furthermore, in the present invention, it is preferable that the nozzle is configured to directly inject lubricating oil onto the inner circumference of the return path side portion of the raising chain.

According to this characteristic configuration, the lubricating oil injected from the nozzle is injected directly onto the inner circumference of the return path side portion of the raising chain. This makes it difficult for the second raising claw to get in the way of the oil injection, and the lubricating oil injected from the nozzle is more likely to permeate from the inner circumference to the outer circumference of the raising chain due to the centrifugal force of the raising chain. Furthermore, it is possible to prevent the lubricating oil injected from the nozzle from coming into contact with the rail member.

Furthermore, in the present invention, the second lifting device is configured so that, on the return path, the second lifting claw is in a lying position relative to the lifting chain, and a stay supporting the nozzle is provided inside the lifting case, the stay is located between the inner periphery of the return path side portion of the lifting chain and the nozzle, and has a contact portion with which the second lifting claw in the lying position comes into contact, and it is preferable that, on the return path of the lifting chain, the second lifting claw in the lying position comes into contact with the contact portion, thereby temporarily changing the position of the second lifting claw to the upright position.

Here, when the second lifting claw in the lying position moves near the nozzle on the return path of the lifting chain, there is a risk that the second lifting claw will collide with the nozzle. However, with this characteristic configuration, when the second lifting claw in the lying position comes into contact with the contact portion on the return path of the lifting chain, the second lifting claw is temporarily changed to an upright position, so this inconvenience can be avoided.

Furthermore, in the present invention, the oiling device is configured to automatically oil other devices other than the second lifting device, and it is preferable that the oiling device has a first oil supply passage that supplies lubricating oil to the second lifting device and a second oil supply passage that supplies lubricating oil to the other devices.

According to this characteristic configuration, the lubricating oil is automatically dispensed to other devices by the lubricating device. This makes it easy to dispense lubricating oil to other devices. Furthermore, according to this characteristic configuration, the first oil supply passage and the second oil supply passage are configured separately. This makes it difficult for a malfunction to occur in either the first oil supply passage or the second oil supply passage to affect the other. Furthermore, it is easy to adopt different specifications for the first oil supply passage and the second oil supply passage.

Furthermore, in the present invention, the harvesting unit has a plurality of the second lifting devices, the first supply oil passage has a branching section that branches the flow of lubricating oil, and a plurality of branch oil passages that are connected to the branching section and supply the lubricating oil branched by the branching section to the second lifting device, and it is preferable that the volumes of the plurality of branch oil passages are the same or approximately the same.

According to this characteristic configuration, the amount of lubricating oil flowing through the multiple branch oil passages is the same or approximately the same. This makes it possible to uniform the amount of lubricating oil supplied to the multiple second lifting devices.

Furthermore, in the present invention, it is preferable that the cutting unit has a cutting blade that cuts planted stalks, the oiling device is configured to automatically apply lubricating oil to the cutting blade as the other device, the second oil supply passage is configured to supply lubricating oil to the cutting blade as the other device, and the first oil supply passage branches off from the second oil supply passage.

According to this characteristic configuration, the lubricating oil is automatically applied to the cutting blade by the oil application device. This makes it possible to easily apply lubricating oil to the cutting blade. In addition, by branching the first oil supply passage from the second oil supply passage, the first oil supply passage and the second oil supply passage can be partially shared.

Furthermore, in the present invention, it is preferable that the harvesting unit has a transport device that transports the harvested stalks, the oiling device is configured to automatically oil the transport device as the other device with lubricating oil, the second oil supply passage is configured to supply lubricating oil to the transport device as the other device, the first oil supply passage has a first hydraulic pump that pumps lubricating oil toward the second lifting device, the second oil supply passage has a second hydraulic pump that pumps lubricating oil toward the transport device, and the first hydraulic pump and the second hydraulic pump are configured to be driven simultaneously.

According to this characteristic configuration, the lubricating oil is automatically injected into the conveying device by the oil injection device. This allows the lubricating oil to be easily injected into the conveying device. In addition, by simultaneously driving the first hydraulic pump and the second hydraulic pump, the lubricating oil is injected into the second lifting device and the conveying device at the same time. This allows the lubricating oil to be injected into the second lifting device and the conveying device efficiently.

Furthermore, in the present invention, the first oil supply passage has a first hydraulic pump that pumps lubricating oil toward the second lifting device, and is provided with an operating unit for driving the first hydraulic pump, and the operating unit is preferably a seesaw switch.

This characteristic configuration allows the operation unit to be configured simply.

Furthermore, in the present invention, it is preferable that the oil supply device has an oil supply tank that stores lubricating oil, the first oil supply passage has a first hydraulic pump that pumps the lubricating oil in the oil supply tank toward the second lifting device, the second oil supply passage has a second hydraulic pump that pumps the lubricating oil in the oil supply tank toward the other device, and the first oil supply passage and the second oil supply passage are each directly connected to the oil supply tank.

According to this characteristic configuration, the first oil supply passage and the second oil supply passage can be configured independently of each other by directly connecting the first oil supply passage and the second oil supply passage to the oil tank, respectively.

Furthermore, in the present invention, the reaping unit has a cutting blade that cuts the planted culms and a transport device that transports the reaped culms, the oiling device is configured to automatically lubricate the cutting blade and the transport device as the other devices, the second oil supply passage is configured to supply lubricating oil to the cutting blade and the transport device as the other devices, the first oil supply passage has a first hydraulic pump that pumps lubricating oil toward the second lifting device, the second oil supply passage has a second hydraulic pump that pumps lubricating oil toward the cutting blade and the transport device, and is preferably equipped with an operating unit for driving and operating the first hydraulic pump.

According to this characteristic configuration, the second oil supply passage supplies lubricating oil to the cutting blade and the conveying device. This allows the second oil supply passage to be shared between the cutting blade and the conveying device. Furthermore, the first oil supply passage supplies lubricating oil to the second lifting device. This allows lubricating oil to be supplied to the second lifting device independently of the cutting blade and the conveying device.

FIG. FIG. FIG. FIG. 2 is a left side view showing the internal structure of the vertical lifting device. FIG. 4 is a rear view showing the rail member and the oil supply hose. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. FIG. 2 is a left side view showing the internal structure of the vertical lifting device, in which the rail member is separated from the inner periphery of the lifting path side portion of the lifting chain; FIG. 13 is a diagram showing a configuration for supplying lubricating oil to the vertical lifting device. FIG. 2 is a plan view showing a first horizontal lifting device and a first vertical lifting device. FIG. 2 is a front view showing a first horizontal lifting device and a first vertical lifting device. FIG. FIG. FIG. FIG. 2 is a diagram showing a lubrication device according to a first alternative embodiment. FIG. 11 is a view showing a lubricating device according to a second alternative embodiment.

The embodiment of the present invention will be described with reference to the drawings. In the following description, the direction of arrow F is the "front side of the aircraft", the direction of arrow B is the "rear side of the aircraft", the direction of arrow L is the "left side of the aircraft", and the direction of arrow R is the "right side of the aircraft".

[Overall configuration of the combine]
As shown in Fig. 1, a combine harvester (head-feeding combine harvester) includes a traveling body 1, a reaping unit 2 that harvests planted culms, a threshing device 3 that threshes the harvested culms, a grain storage tank 4 that stores grains, a grain discharge device 5 that discharges grains in the grain storage tank 4, and a driver's cabin 6 in which a driver rides. The traveling body 1 includes left and right crawler traveling devices 7 and a machine frame 8. The machine frame 8 is supported by the left and right crawler traveling devices 7. The reaping unit 2 is disposed in front of the traveling body 1. The grain storage tank 4 is disposed next to the threshing device 3.

[Reaping section]
1 to 3, the reaping unit 2 includes a plurality of (eight in this embodiment) weed-dividing tools 9 for dividing the planted culms, a plurality of (seven in this embodiment) horizontal lifting devices 10 (corresponding to the "first lifting devices" of the present invention) for raising the planted culms, a plurality of (five in this embodiment) vertical lifting devices 11 (corresponding to the "second lifting devices" of the present invention) that are provided in front of the horizontal lifting devices 10 and for raising the planted culms, a cutting blade 12 for cutting the planted culms, and a transport device 13 for transporting the harvested culms. In this embodiment, the reaping unit 2 is a seven-row harvester.
The cutting unit 2 is configured to be swingable about a swing axis X1 extending along the left-right direction of the machine body. By swinging the cutting unit 2 about the swing axis X1, the cutting unit 2 rises and falls between a non-working position (upper position) where cutting work is not performed and a working position (lower position) where cutting work is performed.

As shown in FIG. 2, the harvesting unit 2 includes a raising drive shaft 15, a plurality of (seven in this embodiment) first transmission cases 16, a plurality of (four in this embodiment) stalk passing sections 17, and a plurality of (five in this embodiment) second transmission cases 18 (corresponding to the "transmission cases" of the present invention).

The seven horizontal lifting devices 10 are referred to as the first to seventh horizontal lifting devices 10 from the left. The five vertical lifting devices 11 are referred to as the first to fifth vertical lifting devices 11 from the left. The four stalk passing sections 17 are referred to as the first to fourth stalk passing sections 17 from the left.

The lifting drive shaft 15 transmits the driving force for driving the lateral lifting device 10. The lifting drive shaft 15 is provided across the upper part of the seven lateral lifting devices 10 (first transmission case 16) so as to extend in the left-right direction of the aircraft.

The first transmission case 16 is provided between the lifting drive shaft 15 and the lateral lifting device 10. The first transmission case 16 is equipped with a transmission mechanism (not shown) that transmits the power of the lifting drive shaft 15 to the lateral lifting device 10. The power of the lifting drive shaft 15 is transmitted to the lateral lifting device 10 via the first transmission case 16.

The lateral lifting device 10 comprises a drive sprocket 19, a driven roller 20, a tension sprocket 21, a lifting chain 22, a number of lifting claws 23 (corresponding to the "first lifting claw" of the present invention), and a lifting case 24.

The drive sprocket 19 is connected to the first transmission case 16 so that the power of the first transmission case 16 can be transmitted. The tension sprocket 21 is configured to apply tension to the lifting chain 22. The lifting chain 22 is wound around the drive sprocket 19, the driven roller 20, and the tension sprocket 21. The lifting claw 23 rises in a position along the left-right direction of the machine body and lifts the planted stalks. The lifting claw 23 is attached to the lifting chain 22 so that it can be raised and lowered.

In FIG. 2, the path (raising path) for raising the planted culms in the horizontal raising device 10 is indicated by R1, and the path (return path) for not raising the planted culms in the horizontal raising device 10 is indicated by R2. The horizontal raising device 10 is configured so that in the raising path R1, the raising claws 23 are in an upright position relative to the raising chain 22, and in the return path R2, the raising claws 23 are in a lying position relative to the raising chain 22.

The lifting case 24 houses the drive sprocket 19, the driven roller 20, the tension sprocket 21, and the lifting chain 22. The lifting case 24 has a front cover 25.

The first stalk passing section 17 is formed between the lifting path R1 side portion of the first lateral lifting device 10 and the lifting path R1 side portion of the second lateral lifting device 10. The planted stalks raised by the first lateral lifting device 10 and the planted stalks raised by the second lateral lifting device 10 pass through the first stalk passing section 17.

The second stalk passing section 17 is formed between the return path R2 side portion of the second lateral raising device 10 and the raising path R1 side portion of the third lateral raising device 10. The planted stalks raised by the third lateral raising device 10 pass through the second stalk passing section 17.

The third stalk passing section 17 is formed between the lifting path R1 side portion of the fourth lateral lifting device 10 and the lifting path R1 side portion of the fifth lateral lifting device 10. The planted stalks raised by the fourth lateral lifting device 10 and the planted stalks raised by the fifth lateral lifting device 10 pass through the third stalk passing section 17.

The fourth stalk passing section 17 is formed between the lifting path R1 side portion of the sixth lateral lifting device 10 and the lifting path R1 side portion of the seventh lateral lifting device 10. The planted stalks raised by the sixth lateral lifting device 10 and the planted stalks raised by the seventh lateral lifting device 10 pass through the fourth stalk passing section 17.

The second transmission case 18 is provided across the horizontal lifting device 10 and the vertical lifting device 11. Specifically, the second transmission case 18 is provided across the front portion of the horizontal lifting device 10 and the horizontal side portion of the vertical lifting device 11 located on the lifting path R1 side of the horizontal lifting device 10. The second transmission case 18 is equipped with a transmission mechanism (not shown) that transmits the power of the horizontal lifting device 10 to the vertical lifting device 11. The power of the horizontal lifting device 10 is transmitted to the vertical lifting device 11 via the second transmission case 18. An opening 25a is formed in the front cover 25. The end of the second transmission case 18 on the horizontal lifting device 10 side is inserted into the opening 25a.

[Vertical lifting device]
As shown in Figure 4, the vertical lifting device 11 includes a drive sprocket 26 (corresponding to the "upper rotating body" of the present invention), a tension roller 27 (corresponding to the "lower rotating body" of the present invention), a lifting chain 28, a number of lifting claws 29 (corresponding to the "second lifting claws" of the present invention), a rail member 30, a lifting case 31, and a cam member 32.

The drive sprocket 26 is supported on the upper part of the raising case 31 so as to be rotatable around a rotation axis X2 extending along the left-right direction of the machine body. The drive sprocket 26 is connected to the second transmission case 18 so as to be able to transmit the power of the second transmission case 18. The power of the drive sprocket 19 is transmitted to the drive sprocket 26 via the second transmission case 18. The tension roller 27 is supported on the lower part of the raising case 31 so as to be rotatable around a rotation axis X3 extending along the left-right direction of the machine body. The tension roller 27 is configured to apply tension to the raising chain 28.

The lifting chain 28 is wound around the drive sprocket 26 and the tension roller 27. The lifting claw 29 rises in a position along the fore-and-aft direction of the machine body and lifts the planted stalks. The lifting claw 29 is attached to the lifting chain 28 so that it can be raised and lowered.

In FIG. 4, the path (raising path) that raises the planted culms in the vertical raising device 11 is indicated by R3, and the path (return path) that does not raise the planted culms in the vertical raising device 11 is indicated by R4. The vertical raising device 11 is configured so that in the raising path R3, the raising claws 29 are in an upright position relative to the raising chain 28, and in the return path R4, the raising claws 29 are in a lying position relative to the raising chain 28.

The lifting case 31 houses the drive sprocket 26, tension roller 27, lifting chain 28, and rail member 30. The lifting case 31 has left and right side plates 33. A shaft member 34 is provided between the upper part of the left side plate 33 and the upper part of the right side plate 33.

The rail member 30 is provided along the inner circumference of the portion of the raising chain 28 on the raising path R3 side. The rail member 30 is supported by the left and right side plates 33 so that it can swing around a swing axis X4 that extends along the left-right direction of the machine body. As the raising claw 29 rises along the rail member 30, the raising claw 29 is maintained in an upright position relative to the raising chain 28.

As shown in Figures 4 to 6, the rail member 30 has multiple (two in this embodiment) grooves 35 and multiple (four in this embodiment) reinforcing members 36. The two grooves 35 are arranged side by side along the direction of the swing axis X4. The grooves 35 open toward the opposite side of the lifting chain 28 from the lifting path R3 side, and extend along the extension direction of the rail member 30.

The reinforcing members 36 are provided across both side walls of the groove portion 35. The four reinforcing members 36 are spaced apart in the extension direction of the rail member 30.

The cam member 32 swings the rail member 30. The cam member 32 is supported by the left and right side plates 33 so that it can swing around a swing axis X5 that extends along the left-right direction of the machine body. The cam member 32 fits into one of the two grooves 35.

The cam member 32 is configured to be switchable between a protruding position (see FIG. 4) and a retracted position (see FIG. 7). A handle 37 is connected to the cam member 32 for switching the cam member 32 between the protruding position and the retracted position. As shown in FIG. 4, by switching the cam member 32 to the protruding position, the rail member 30 swings forward about the swing axis X4, so that the rail member 30 runs along the inner periphery of the lifting chain 28 on the lifting path R3 side. As shown in FIG. 7, by switching the cam member 32 to the retracted position, the rail member 30 swings rearward about the swing axis X4, so that the rail member 30 moves away from the inner periphery of the lifting chain 28 on the lifting path R3 side.

[Lubricating device]
As shown in FIG. 8, the combine harvester is provided with an oiling device A that automatically oils the vertical lifting device 11. The oiling device A is configured to automatically oil other devices (the cutting blade 12 and the conveying device 13 in this embodiment) other than the vertical lifting device 11, as described in detail later. The oiling device A includes an oiling tank T that stores the lubricating oil, a hydraulic pump P1 (corresponding to the "first hydraulic pump" according to the present invention) that pressure-feeds the lubricating oil toward the vertical lifting device 11, an oiling hose 38 for sending the lubricating oil to the vertical lifting device 11, and a nozzle 39 that oils (squirts) the lubricating oil from the oiling hose 38. The hydraulic pump P1 is provided in the middle of the oiling hose 38. The oiling hose 38 is arranged to extend from the oiling tank T toward each vertical lifting device 11.

9 and 10, the oil supply hose 38 is arranged to pass through the opening 25a and extend forward from the lateral lifting device 10. That is, the opening 25a for passing the oil supply hose 38 is formed in the front part (front cover 25) of the lateral lifting device 10.
The portion of the opening 25a through which the oil supply hose 38 passes is located on the opposite side of the lifting path R1 of the lateral lifting device 10 with respect to the second transmission case 18. A metal relay pipe 40 is provided in a portion of the oil supply hose 38 located inside the lifting case 24. The relay pipe 40 is a tubular member having a substantially L-shape.

The oil supply hose 38 is routed along the second transmission case 18. Specifically, the oil supply hose 38 is routed along the portion of the second transmission case 18 opposite the lifting path R1 of the lateral lifting device 10. A clamp 46 (corresponding to the "guide member" according to the present invention) that guides the oil supply hose 38 is provided in front of the lateral lifting device 10. The oil supply hose 38 is supported by the second transmission case 18 via the clamp 46.

As shown in FIG. 4, the nozzle 39 is provided inside the lifting case 31. An oil supply hose 38 is connected to the nozzle 39. The nozzle 39 is configured to supply lubricating oil directly to the inner periphery of the return path R4 side portion of the lifting chain 28. In other words, the nozzle 39 is configured to supply (squirt) lubricating oil in the direction opposite to the rail member 30. A stay 41 that supports the nozzle 39 is provided inside the lifting case 31. The nozzle 39 is supported by the lifting case 31 via the stay 41.

An insertion hole 33a into which the oil supply hose 38 is inserted is formed in the side plate 33 (in this embodiment, the side plate 33 on the second transmission case 18 side of the left and right side plates 33). The insertion hole 33a is formed in the upper part of the side plate 33.

As shown in Figures 5 and 6, the oil supply hose 38 is passed through the inside of the groove portion 35. Specifically, the oil supply hose 38 is passed through the inside of a groove portion 35 other than the groove portion 35 into which the cam member 32 is inserted. Of the four reinforcing members 36, the upper two reinforcing members 36 also serve as members that guide the oil supply hose 38 so that the oil supply hose 38 does not slip out of the inside of the groove portion 35.

As shown in FIG. 7, the nozzle 39 is disposed on the inner periphery of the raising chain 28 and in a position that avoids the swinging range of the rail member 30. In other words, the nozzle 39 does not overlap with the rail member 30 in a side view. The insertion hole 33a is formed on the inner periphery of the raising chain 28 in the side plate 33 and in a position that avoids the swinging range of the rail member 30 and the shaft member 34. In other words, the insertion hole 33a does not overlap with the rail member 30 and the shaft member 34 in a side view.

As shown in Figures 11 and 12, the stay 41 has an attachment portion 41a, an attached portion 41b, and a contact portion 41c. The nozzle 39 is attached to the attachment portion 41a. The attached portion 41b is attached to the raising case 31 (side plate 33). The contact portion 41c is located between the inner periphery of the return path R4 side portion of the raising chain 28 and the nozzle 39. The contact portion 41c is configured so that the raising claw 29 in the lying position comes into contact with the contact portion 41c. In the return path R4 of the raising chain 28, the raising claw 29 in the lying position comes into contact with the contact portion 41c, so that the position of the raising claw 29 is temporarily changed to the upright position.

As shown in FIG. 13, the oiling device A is configured to automatically oil the vertical lifting device 11, the cutting blade 12, and the transport device 13. That is, the oiling device A is configured to automatically oil other devices (in this embodiment, the cutting blade 12 and the transport device 13) other than the vertical lifting device 11. The oiling device A includes a supply oil passage 42 (corresponding to the "first supply oil passage" according to the present invention) that supplies lubricating oil to the vertical lifting device 11, a supply oil passage 43 (corresponding to the "second supply oil passage" according to the present invention) that supplies lubricating oil to the cutting blade 12, a supply oil passage 44 (corresponding to the "second supply oil passage" according to the present invention) that supplies lubricating oil to the transport device 13, and an oiling tank T that stores lubricating oil.

The oil supply passage 42 is equipped with a hydraulic pump P1 that pumps the lubricating oil in the oil tank T toward the vertical lifting device 11. The oil supply passage 42 branches off from the oil supply passage 43.

The oil supply passage 43 is configured to supply lubricating oil to the cutting blade 12, which is a device separate from the vertical lifting device 11. The oil supply passage 43 is equipped with a hydraulic pump P2 (corresponding to the "second hydraulic pump" according to the present invention) that pumps the lubricating oil in the oil tank T toward the cutting blade 12.

The oil supply passage 44 is configured to supply lubricating oil to the conveying device 13, which is a device separate from the vertical lifting device 11. The oil supply passage 44 is equipped with a hydraulic pump P3 (corresponding to the "second hydraulic pump" according to the present invention) that pumps the lubricating oil in the oil tank T toward the conveying device 13.

An operating unit 45 for driving and operating hydraulic pumps P1, P2, and P3 is provided in the driver's cabin 6. In this embodiment, the operating unit 45 is a seesaw switch. The operating unit 45 includes a button 45a and a button 45b.

When the driver presses button 45a, hydraulic pump P1 and hydraulic pump P3 are driven. In other words, hydraulic pump P1 and hydraulic pump P3 are configured to be driven simultaneously. When hydraulic pump P1 and hydraulic pump P3 are driven, the lubricating oil in oil tank T flows toward vertical lifting device 11 and transport device 13 as shown by arrow S1.

When the driver presses button 45b, hydraulic pump P2 is driven. When hydraulic pump P2 is driven, lubricating oil in oil tank T flows toward cutting blade 12 as shown by arrow S2.

8, the oil supply passage 42 includes an oil supply hose 38 for supplying lubricating oil to the vertical lifting device 11. The oil supply hose 38 includes a plurality of (four in this embodiment) branching sections D1, D2, D3, and D4 that branch the flow of lubricating oil, and a plurality of (five in this embodiment) first branching hoses 38a (corresponding to the "branching oil passage" of the present invention), a second branching hose 38b (corresponding to the "branching oil passage" of the present invention), a third branching hose 38c (corresponding to the "branching oil passage" of the present invention), a fourth branching hose 38d (corresponding to the "branching oil passage" of the present invention), and a fifth branching hose 38e (corresponding to the "branching oil passage" of the present invention).

The first branch hose 38a is connected to the branch portion D4. The first branch hose 38a supplies the lubricating oil branched by the branch portion D4 to the first vertical lifting device 11.

The second branch hose 38b is connected to the branch D4. The second branch hose 38b supplies the lubricating oil branched by the branch D4 to the second vertical lifting device 11.

The third branch hose 38c is connected to the branch portion D3. The third branch hose 38c supplies the lubricating oil branched by the branch portion D3 to the third vertical lifting device 11.

The fourth branch hose 38d is connected to the branch portion D3. The fourth branch hose 38d supplies the lubricating oil branched by the branch portion D3 to the fourth vertical lifting device 11.

The fifth branch hose 38e is connected to the branch portion D1. The fifth branch hose 38e supplies the lubricating oil branched off by the branch portion D1 to the fifth vertical lifting device 11.

Here, the volume of the first branch hose 38a and the volume of the second branch hose 38b are the same or approximately the same. The volume of the third branch hose 38c and the volume of the fourth branch hose 38d are the same or approximately the same.

[Another embodiment]
(1) In the above embodiment, the insertion hole 33a is formed on the inner periphery of the side plate 33 with respect to the raising chain 28 and is located outside the swing range of the rail member 30. However, the insertion hole 33a may be formed on the outer periphery of the side plate 33 with respect to the raising chain 28.

(2) In the above embodiment, the oil supply hose 38 is passed through the inside of the groove portion 35. However, the oil supply hose 38 does not have to be passed through the inside of the groove portion 35.

(3) In the above embodiment, the oil supply hose 38 is routed along a portion of the second transmission case 18 on the opposite side to the lifting path R1 of the lateral lifting device 10. However, the oil supply hose 38 may be routed along an upper or lower portion of the second transmission case 18.

(4) In the above embodiment, the oil supply hose 38 is routed along the second transmission case 18. However, the oil supply hose 38 does not have to be routed along the second transmission case 18.

(5) In the above embodiment, the nozzle 39 is positioned on the inner side of the raising chain 28 and away from the swinging range of the rail member 30. However, the nozzle 39 may also be positioned on the outer side of the raising chain 28 on the side plate 33.

(6) In the above embodiment, the nozzle 39 is configured to directly inject lubricating oil onto the inner periphery of the portion of the raising chain 28 on the return path R4 side. However, the nozzle 39 may also be configured to directly inject lubricating oil onto the outer periphery of the portion of the raising chain 28 on the return path R4 side. The nozzle 39 may also be configured to directly inject lubricating oil onto the inner periphery of the portion of the raising chain 28 on the lifting path R3 side. The nozzle 39 may also be configured to directly inject lubricating oil onto the outer periphery of the portion of the raising chain 28 on the lifting path R3 side.

(7) In the above embodiment, the nozzle 39 is configured to directly inject lubricating oil into the raising chain 28. However, the nozzle 39 may also be configured to indirectly inject lubricating oil into the raising chain 28.

(8) In the above embodiment, the nozzle 39 is configured to inject lubricating oil in the direction opposite to the rail member 30. However, the nozzle 39 may also be configured to inject lubricating oil in the direction toward the rail member 30.

(9) In the above embodiment, the volume of the first branch hose 38a and the volume of the second branch hose 38b are the same or approximately the same, and the volume of the third branch hose 38c and the volume of the fourth branch hose 38d are the same or approximately the same. However, the present invention is not limited to the configuration according to the above embodiment. For example, the volumes of the first branch hose 38a, the second branch hose 38b, the third branch hose 38c, the fourth branch hose 38d, and the fifth branch hose 38e may all be the same or approximately the same. Also, the volumes of the first branch hose 38a, the second branch hose 38b, the third branch hose 38c, the fourth branch hose 38d, and the fifth branch hose 38e may all be different.

(10) In the above embodiment, the oiling device A is configured to automatically oil other devices other than the vertical raising device 11 (in the above embodiment, the cutting blade 12 and the transport device 13). However, the present invention is not limited to the configuration according to the above embodiment. For example, the other devices other than the vertical raising device 11 may be devices other than the cutting blade 12 and the transport device 13. Furthermore, the oiling device A may be configured to automatically oil only the vertical raising device 11.

(11) In the above embodiment, the hydraulic pump P1 and the hydraulic pump P3 are configured to be driven simultaneously. However, the hydraulic pump P1 and the hydraulic pump P3 do not have to be configured to be driven simultaneously.

(12) In the above embodiment, the operation unit 45 is a seesaw switch. However, the operation unit 45 may be an operation unit other than a seesaw switch.

(13) In the above embodiment, the oil supply passage 42 branches off from the oil supply passage 43. However, as shown in FIG. 14 , the oil supply passage 42 may be directly connected to the oil tank T.
That is, the oil supply passages 42, 43, and 44 may each be directly connected to the oil tank T.

15, the oil supply device A may include a supply oil passage 42 that supplies lubricating oil to the vertical lifting device 11, and a supply oil passage 43 that supplies lubricating oil to the cutting blade 12 and the conveying device 13. The supply oil passage 43 includes a hydraulic pump P2 that pumps lubricating oil toward the cutting blade 12 and the conveying device 13. In the example shown in FIG. 15, as in the example shown in FIG. 14, the supply oil passage 42 is directly connected to the oil tank T. The operation unit 45 is an operation unit for driving and operating the hydraulic pump P1 and the hydraulic pump P2. When the driver presses the button 45a, the hydraulic pump P1 is driven. When the hydraulic pump P1 is driven, the lubricating oil in the oil tank T flows toward the vertical lifting device 11 as shown by the arrow S1. When the driver presses the button 45b, the hydraulic pump P2 is driven. When the hydraulic pump P2 is driven, the lubricating oil in the oil tank T flows toward the cutting blade 12 and the conveying device 13 as shown by the arrow S2.

This invention can be used in combine harvesters.

2 Reaping section 10 Lateral pulling device (first pulling device)
11 Vertical lifting device (second lifting device)
12 cutting blade 13 conveying device 18 second transmission case (transmission case)
23. Raising claw (first raising claw)
25a Opening 26 Drive sprocket (upper rotating body)
27 Tension roller (lower rotating body)
28 Lifting chain 29 Lifting claw (second lifting claw)
30 Rail member 31 Raising case 32 Cam member 33 Side plate 33a Insertion hole 34 Shaft member 35 Groove portion 36 Reinforcing member 38 Oil supply hose 38a First branch hose (branch oil passage)
38b Second branch hose (branch oil passage)
38c Third branch hose (branch oil passage)
38d Fourth branch hose (branch oil passage)
38e Fifth branch hose (branch oil passage)
39 Nozzle 40 Relay pipe 41 Stay 41c Contact portion 42 Supply oil passage (first supply oil passage)
43 Supply oil passage (second supply oil passage)
44 Supply oil passage (second supply oil passage)
45 Operation unit 46 Clamp (guide member)
A Lubricating device D1 Branch D2 Branch D3 Branch D4 Branch P1 Hydraulic pump (first hydraulic pump)
P2 Hydraulic pump (second hydraulic pump)
P3 Hydraulic pump (second hydraulic pump)
R1 Raising path R3 Raising path R4 Return path T Oil tank X2 Rotation axis X3 Rotation axis X4 Swing axis

Claims (24)

A combine harvester having a harvesting unit for harvesting planted stalks,
The reaping unit includes:
A plurality of first lifting devices having a plurality of first lifting claws that rise in a posture along the left-right direction of the machine body and lift the planted stalks;
A second lifting device having a plurality of second lifting claws that are provided forward of the first lifting device and rise in a posture along the front-rear direction of the machine body to lift the planted stalks,
The second lifting device is provided with an oil supplying device for automatically supplying lubricating oil thereto ,
The second lifting device is
An upper rotating body that is rotatable around a rotation axis extending along the left-right direction of the aircraft body;
A lower rotor that is rotatable around a rotation axis extending along the left-right direction of the aircraft body;
A raising chain is wound around the upper rotating body and the lower rotating body;
A number of the second lifting claws are attached to the lifting chain in a liftable manner;
a rail member that is provided along an inner periphery of a portion of the raising chain on the side of the raising path so as to be swingable around a swing axis extending along the left-right direction of the machine body, and that maintains the second raising claw in an upright position relative to the raising chain;
a lifting case having left and right side plates and accommodating the upper rotating body, the lower rotating body, the lifting chain, and the rail member;
the lubricating device has an oil supply hose for supplying lubricating oil to the second lifting device;
An insertion hole into which the oil supply hose is inserted is formed in the lifting case,
A combine harvester in which the insertion hole is formed at a position that avoids the swing range of the rail member. The lift-up case has a shaft member provided between the left side plate and the right side plate,
The combine harvester according to claim 1 , wherein the insertion hole is formed at a position on the side plate that avoids the shaft member. The rail member has a groove portion that opens toward the opposite side of the raising path side portion of the raising chain and extends along the extending direction of the rail member,
3. The combine harvester according to claim 1 , wherein the oiling hose is passed through an interior of the groove portion. The rail member has a reinforcing member provided across both side walls of the groove portion,
The combine harvester according to claim 3 , wherein the reinforcing member also serves as a member for guiding the oiling hose. The second lifting device has a cam member for swinging the rail member,
The rail member has a plurality of grooves arranged in a line along the swing axis direction,
The cam member is inserted into one of the plurality of grooves,
4. The combine harvester according to claim 3 , wherein the oiling hose is passed through an interior of one of the plurality of grooves other than the groove into which the cam member is inserted. The oil supply hose of the oil supply device is arranged to extend forward from the first lifting device,
2. The combine harvester according to claim 1, further comprising a guide member for guiding the oiling hose in front of the first lifting device. A transmission mechanism is provided for transmitting the power of the first lifting device to the second lifting device, and a transmission case is provided between the first lifting device and the second lifting device.
The combine harvester according to claim 6 , wherein the oil supply hose is routed along the transmission case. The transmission case is provided across a front portion of the first lifting device and a lateral side portion of the second lifting device on a lifting path side of the first lifting device,
The combine harvester according to claim 7 , wherein the oil supply hose is routed along a portion of the transmission case opposite to the lifting path of the first lifting device. 9. A combine harvester according to claim 7 or 8 , wherein an opening for passing the oiling hose is formed in a front portion of the first lifting device. The end of the transmission case on the side of the first lifting device is inserted into the opening,
The combine harvester according to claim 9 , wherein a portion of the opening through which the oil supply hose passes is located on an opposite side to a lifting path of the first lifting device with respect to the transmission case. The combine harvester according to any one of claims 6 to 8 , wherein a metal relay pipe is provided at a portion of the oiling hose located inside the first lifting device. The oiling device is
a nozzle provided inside the lift case for injecting lubricating oil from the oil injection hose;
2. The combine harvester according to claim 1, wherein the nozzle is disposed on an inner peripheral side of the raising chain and away from a swing range of the rail member. 13. The combine of claim 12 , wherein the nozzle is configured to dispense lubricating oil in a direction opposite the rail members. 14. The combine harvester of claim 12 or 13 , wherein the nozzle is configured to apply lubricating oil directly to the raising chain. 15. The combine of claim 14 , wherein the nozzle is configured to apply lubricating oil directly to an inner circumference of the pull chain. The combine harvester according to claim 15 , wherein the nozzle is configured to inject lubricating oil directly onto an inner periphery of the return path side portion of the raising chain. The second lifting device is configured such that, in the return path, the second lifting claw is in a lowered position relative to the lifting chain,
A stay for supporting the nozzle is provided inside the raising case,
the stay is located between an inner periphery of a return path side portion of the raising chain and the nozzle, and has a contact portion with which the second raising claw in the lying position comes into contact,
The combine harvester according to claim 16, wherein the second raising claw in the lying position contacts the contact portion on the return path of the raising chain, thereby temporarily changing the position of the second raising claw to the standing position. The lubricating device is configured to automatically lubricate other devices other than the second lifting device,
The oiling device is
A first oil supply passage for supplying lubricating oil to the second lifting device;
The combine harvester according to claim 1, further comprising: a second oil supply passage for supplying lubricating oil to the other device. The reaping unit has a plurality of the second raising devices,
The first supply oil passage is
A branching portion for branching the flow of lubricating oil;
A plurality of branched oil passages are connected to the branched portion and supply the lubricating oil branched by the branched portion to the second raising device,
The combine according to claim 18 , wherein the volumes of the plurality of branch oil passages are the same or approximately the same. The reaping unit has a cutting blade that cuts the planted culms,
The oiling device is configured to automatically oil the cutting blade as the other device,
The second oil supply passage is configured to supply lubricating oil to the cutting blade as the other device,
The combine harvester according to claim 18 or 19 , wherein the first oil supply passage branches off from the second oil supply passage. The reaping unit has a conveying device that conveys the reaped stalks,
The oil supplying device is configured to automatically supply lubricant to the conveying device as the other device;
The second supply oil passage is configured to supply lubricating oil to the conveying device as the other device,
The first oil supply passage has a first hydraulic pump that pumps lubricating oil toward the second lifting device,
The second oil supply passage has a second hydraulic pump that pumps lubricating oil toward the transfer device,
The combine harvester according to claim 18 or 19 , wherein the first hydraulic pump and the second hydraulic pump are configured to be driven simultaneously. The first oil supply passage has a first hydraulic pump that pumps lubricating oil toward the second lifting device,
An operating unit for driving and operating the first hydraulic pump,
The combine harvester according to claim 18 or 19 , wherein the operating unit is a seesaw switch. The oil supply device has an oil supply tank that stores lubricating oil,
The first oil supply passage has a first hydraulic pump that pumps lubricating oil in the oil supply tank toward the second lifting device,
the second oil supply passage has a second hydraulic pump that pumps the lubricating oil in the oil supply tank toward the other device,
20. The combine harvester according to claim 18 or 19 , wherein the first oil supply passage and the second oil supply passage are each directly connected to the oil tank. The reaping unit includes:
A cutting blade for cutting the planted culms;
A conveying device for conveying the harvested stalks,
The oiling device is configured to automatically oil the cutting blade and the conveying device as the other device,
The second oil supply passage is configured to supply lubricating oil to the cutting blade and the conveying device as the other device,
The first oil supply passage has a first hydraulic pump that pumps lubricating oil toward the second lifting device,
The second oil supply passage has a second hydraulic pump that pumps lubricating oil toward the cutting blade and the conveying device,
The combine harvester according to claim 18 or 19 , further comprising an operating unit for driving and operating the first hydraulic pump.

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