Combine

Abstract

To provide a combine-harvester which can easily inject lubrication oil to a second raising device.SOLUTION: A combine-harvester includes a reaping unit 2 which reaps planted grain culms. The reaping unit 2 comprises: a plurality of first raising devices 10 which have a large number of first raising claws that rise in the attitude along a machine body left-right direction and act on the planted grain culms to raise them; and a second raising device 11 which have a large number of second raising claws 29 that are provided on the front side with respect to the first raising device 10, rise in the attitude along a machine body front-rear direction and act on the planted grain culms to raise them. The combine-harvester includes a lubrication device A which automatically injects lubrication oil to the second raising device 11.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a combine harvester.

Background Art

[0002] Conventionally, as a combine harvester, for example, the combine harvester described in Patent Document 1 is known. The conventional combine harvester includes a cutting unit (referred to as "cutting unit [3]" in the document) for cutting standing cereal straws. The cutting unit includes a plurality of first lifting devices (referred to as "lateral lifting devices

[16] " in the document) having a number of first lifting claws (referred to as "lateral lifting claws

[25] " in the document) that rise in a posture along the left-right direction of the machine body and act on the standing cereal straws to lift them, and a second lifting device (referred to as "longitudinal lifting device

[17] " in the document) provided in front of the first lifting device and having a number of second lifting claws (referred to as "longitudinal lifting claws

[32] " in the document) that rise in a posture along the front-rear direction of the machine body and act on the standing cereal straws to lift them.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional combine harvester, the lubricating oil needs to be manually poured into the second lifting device by an operator. Therefore, it takes time and effort to pour the lubricating oil into the second lifting device.

[0005] In view of the above situation, there is a demand for a combine harvester that can easily pour lubricating oil into the second lifting device.

Means for Solving the Problems

[0006] A combine harvester having a cutting unit for cutting standing cereal straws, wherein the cutting unit includes a plurality of first lifting devices having a number of first lifting claws that rise in a posture along the left-right direction of the machine body and act on the standing cereal straws to cause them to rise, and a second lifting device provided in front of the first lifting device and having a number of second lifting claws that rise in a posture along the front-rear direction of the machine body and act on the standing cereal straws to cause them to rise, and is provided with an oil injection device for automatically injecting lubricating oil into the second lifting device and the second triggering device includes an upper rotating body rotatable around a rotation axis extending along the left - right direction of the aircraft, a lower rotating body rotatable around a rotation axis extending along the left - right direction of the aircraft, a triggering chain wound around the upper rotating body and the lower rotating body, a number of the second triggering claws attached to the triggering chain so as to be able to undulate, a rail member provided along the inner peripheral portion of the triggering - path - side portion of the triggering chain so as to be swingable around a swing axis extending along the left - right direction of the aircraft, and maintaining the second triggering claws in an upright posture with respect to the triggering chain, a triggering case having left and right side plates and accommodating the upper rotating body, the lower rotating body, the triggering chain, and the rail member. The oil - injection device has an oil - injection hose for sending lubricating oil to the second triggering device, and an insertion hole into which the oil - injection hose is inserted is formed in the triggering case, and the insertion hole is formed at a position avoiding the swing range of the rail member is what it is.

[0007] According to this characteristic configuration, lubricating oil is automatically injected into the second lifting device by the oil injection device. As a result, lubricating oil can be easily injected into the second lifting device. Here, if the insertion hole is formed on the inner - peripheral side with respect to the triggering chain in the side plate and within the swing range of the rail member, when the rail member swings, there is a risk that the rail member and the portion of the oil - injection hose inserted into the insertion hole may contact each other and be damaged. However, according to this characteristic configuration, since the insertion hole is formed on the inner - peripheral side with respect to the triggering chain in the side plate and at a position avoiding the swing range of the rail member, such inconvenience can be avoided.

[0008]

[0009]

[0010] Furthermore, in the present invention, it is preferable that the lifting case has a shaft 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 shaft member.

[0011] According to this characteristic configuration, when forming the insertion hole in the side plate, the shaft member does not get in the way.

[0012] Furthermore, in the present invention, it is preferable that the rail member opens toward the side opposite to the lifting path side portion of the lifting chain and has a groove portion extending along the extending direction of the rail member, and the oil injection hose passes through the inside of the groove portion.

[0013] According to this characteristic configuration, the inside of the groove portion can be used as a space for passing the oil injection hose.

[0014] 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 the reinforcing member also serves as a member for guiding the oil injection hose.

[0015] According to this characteristic configuration, the reinforcing member can be used as a member for guiding the oil injection hose.

[0016] Furthermore, in the present invention, the second triggering device has a cam member for swinging the rail member, the rail member has a plurality of the groove portions provided so as to be arranged along the swinging axis direction, the cam member is inserted into one of the plurality of groove portions, and it is preferable that the oil injection hose passes through the inside of a groove portion different from the groove portion into which the cam member is inserted among the plurality of groove portions.

[0017] According to this characteristic configuration, the oil injection hose can be passed through the inside of the groove portion so as not to be obstructed by the cam member.

[0018] Furthermore, in the present invention, the oil injection device in It is preferable that the oil injection hose is arranged so as to extend forward from the first triggering device, and a guiding member for guiding the oil injection hose is provided in front of the first triggering device.

[0019] According to this characteristic configuration, in a state where the oil injection hose is arranged so as to extend forward from the first triggering device, it is guided by the guiding member. Thereby, the oil injection hose can be arranged in a stable state.

[0020] Furthermore, in the present invention, it has a transmission mechanism for transmitting the power of the first triggering device to the second triggering device, includes a transmission case provided across the first triggering device and the second triggering device, and it is preferable that the oil injection hose is arranged along the transmission case.

[0021] According to this characteristic configuration, it becomes easier to support the oil injection hose on the transmission case. Further, by supporting the oil injection hose on the transmission case, which is a member with relatively high rigidity, the oil injection hose can be firmly supported.

[0022] Furthermore, in the present invention, it is preferable that the transmission case is provided across the front surface portion of the first causing device and the lateral side surface portion on the causing path side of the first causing device in the second causing device, and the oil injection hose is arranged along a portion of the transmission case on the side opposite to the causing path of the first causing device.

[0023] According to this characteristic configuration, the oil injection hose will not be located on the causing path side of the first causing device with respect to the transmission case. Thereby, the planted cereal straws moving along the causing path of the first causing device can be prevented from contacting the oil injection hose.

[0024] Furthermore, in the present invention, it is preferable that an opening for passing the oil injection hose is formed in the front surface portion of the first causing device.

[0025] According to this characteristic configuration, by passing the oil injection hose through the opening, the oil injection hose can be arranged to extend forward from the first causing device without bypassing the first causing device.

[0026] Furthermore, in the present invention, it is preferable that the end portion of the transmission case on the first causing device side is inserted into the opening, and the portion of the opening through which the oil injection hose passes is located on the side opposite to the causing path of the first causing device with respect to the transmission case.

[0027] According to this characteristic configuration, the opening for inserting the end portion on the side of the first triggering device in the transmission case and the opening for passing the oil injection hose are constituted by a single opening. As a result, it is possible to simplify the configuration compared to a configuration in which two openings are separately formed on the front surface portion of the first triggering device. Further, the oil injection hose is not located on the triggering path side of the first triggering device with respect to the transmission case. Thereby, it is possible to prevent the planted cereal straws moving along the triggering path of the first triggering device from contacting the oil injection hose.

[0028] Furthermore, in the present invention, it is preferable that a metal relay pipe is provided at a portion of the oil injection hose located inside the first triggering device.

[0029] According to this characteristic configuration, the metal relay pipe can reduce the assembly error of the oil injection hose and the vibration of the oil injection hose.

[0030] Furthermore, in the present invention , the the noted oil injection device , the is provided inside the noted triggering case and has a nozzle for injecting lubricating oil from the oil injection hose, and it is preferable that the nozzle is arranged at a position on the inner peripheral side with respect to the triggering chain and avoiding the swing range of the rail member. rule

[0031] Here, if the nozzle is arranged on the inner peripheral side with respect to the triggering chain and within the swing range of the rail member, when the rail member swings, there is a risk that the rail member and the nozzle will come into contact with each other and be damaged. However, according to this characteristic configuration, since the nozzle is arranged at a position on the inner peripheral side with respect to the triggering chain and avoiding the swing range of the rail member, such inconvenience can be avoided.

[0032] Furthermore, in the present invention, it is preferable that the nozzle is configured to inject lubricating oil in a direction opposite to that of the rail member.

[0033] ​According to this characteristic configuration, it is possible to prevent the lubricating oil injected from the nozzle from being applied to the rail member.

[0034] Furthermore, in the present invention, it is preferable that the nozzle is configured to directly inject lubricating oil into the driving chain.

[0035] According to this characteristic configuration, the lubricating oil injected from the nozzle will be directly injected into the driving chain. Thereby, the driving chain can be lubricated well.

[0036] Furthermore, in the present invention, it is preferable that the nozzle is configured to directly inject lubricating oil into the inner peripheral portion of the driving chain.

[0037] According to this characteristic configuration, the lubricating oil injected from the nozzle will be directly injected into the inner peripheral portion of the driving chain. Thereby, it is difficult for the second driving claw to interfere with the oil injection, and the lubricating oil injected from the nozzle is likely to penetrate from the inner peripheral portion to the outer peripheral portion of the driving chain due to the centrifugal force of the driving chain.

[0038] Furthermore, in the present invention, it is preferable that the nozzle is configured to directly inject lubricating oil into the inner peripheral portion of the portion on the return path side of the driving chain.

[0039] According to this characteristic configuration, the lubricating oil injected from the nozzle will be directly injected into the inner peripheral portion of the portion on the return path side of the driving chain. Thereby, it is difficult for the second driving claw to interfere with the oil injection, and the lubricating oil injected from the nozzle is likely to penetrate from the inner peripheral portion to the outer peripheral portion of the driving chain due to the centrifugal force of the driving chain. Furthermore, it is possible to prevent the lubricating oil injected from the nozzle from being applied to the rail member.

[0040] Furthermore, in the present invention, the second triggering device is configured to be in a fallen posture in the return path such that the second triggering claw falls with respect to the triggering chain. Inside the triggering case, a stay for supporting the nozzle is provided. The stay is located between the inner peripheral portion of the return path side portion of the triggering chain and the nozzle, and has a contact portion with which the second triggering claw in the fallen posture comes into contact. In the return path of the triggering chain, it is preferable that when the second triggering claw in the fallen posture comes into contact with the contact portion, the second triggering claw is temporarily changed to the standing posture.

[0041] Here, when the second triggering claw in the fallen posture moves near the nozzle in the return path of the triggering chain, there is a risk that the second triggering claw may collide with the nozzle. However, according to this characteristic configuration, in the return path of the triggering chain, when the second triggering claw in the fallen posture comes into contact with the contact portion, the second triggering claw is temporarily changed to the standing posture, so such inconvenience can be avoided.

[0042] Furthermore, in the present invention, the lubricating oil injection device is configured to automatically inject lubricating oil into another device different from the second triggering device. The lubricating oil injection device preferably has a first supply oil path for supplying lubricating oil to the second triggering device and a second supply oil path for supplying lubricating oil to the other device.

[0043] According to this characteristic configuration, the lubricating oil can be automatically injected into other devices by the lubricating oil injection device. Thereby, the lubricating oil can be easily injected into other devices. Also, according to this characteristic configuration, the first supply oil path and the second supply oil path are separately configured. Thereby, when a problem occurs in one of the first supply oil path and the second supply oil path, the other is less likely to be affected. Also, it is easy to adopt different specifications for the first supply oil path and the second supply oil path.

[0044] Furthermore, in the present invention, the cutting unit has a plurality of the second triggering devices, and the first oil supply passage has a branch portion that branches the flow of lubricating oil, and a plurality of branch oil passages that are connected to the branch portion and supply the lubricating oil branched by the branch portion to the second triggering devices. It is preferable that the volumes of the plurality of branch oil passages are the same or substantially the same.

[0045] According to this characteristic configuration, the amounts of lubricating oil flowing through the plurality of branch oil passages become the same or substantially the same. Thereby, the supply amounts of lubricating oil to the plurality of second triggering devices can be made uniform.

[0046] Furthermore, in the present invention, the cutting unit has a cutting blade for cutting planted cereal straws, the oil injection device is configured to automatically inject lubricating oil into 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 it is preferable that the first oil supply passage branches from the second oil supply passage.

[0047] According to this characteristic configuration, the lubricating oil is automatically injected into the cutting blade by the oil injection device. Thereby, the lubricating oil can be easily injected into the cutting blade. Also, 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.

[0048] Furthermore, in the present invention, the cutting unit has a conveying device for conveying the cut cereal straws, the oil injection device is configured to automatically inject lubricating oil into the conveying device as the other device, the second oil supply 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 triggering device, the second oil supply passage has a second hydraulic pump that pumps lubricating oil toward the conveying device, and it is preferable that the first hydraulic pump and the second hydraulic pump are configured to be driven simultaneously.

[0049] According to this characteristic configuration, lubricating oil is automatically injected into the conveying device by the oil injection device. As a result, lubricating oil can be easily injected into the conveying device. Further, when the first hydraulic pump and the second hydraulic pump are driven simultaneously, lubricating oil is injected into the second triggering device and the conveying device at the same time. Thereby, the injection of lubricating oil into the second triggering device and the injection of lubricating oil into the conveying device can be performed efficiently.

[0050] Furthermore, in the present invention, the first supply oil passage has a first hydraulic pump that pumps lubricating oil toward the second triggering device, and includes an operation unit for driving the first hydraulic pump. The operation unit is preferably a seesaw switch.

[0051] According to this characteristic configuration, the operation unit can be simply configured.

[0052] Furthermore, in the present invention, the oil injection device has an oil injection tank for storing lubricating oil. The first supply oil passage has a first hydraulic pump that pumps the lubricating oil in the oil injection tank toward the second triggering device. The second supply oil passage has a second hydraulic pump that pumps the lubricating oil in the oil injection tank toward the other device. It is preferable that the first supply oil passage and the second supply oil passage are each directly connected to the oil injection tank.

[0053] According to this characteristic configuration, by directly connecting the first supply oil passage and the second supply oil passage to the oil injection tank respectively, the second supply oil passage and the second supply oil passage can be configured independently of each other.

[0054] Furthermore, in the present invention, the cutting unit has a cutting blade for cutting planted cereal straws and a conveying device for conveying the cut cereal straws, the oil injection device is configured to automatically inject lubricating oil into the cutting blade and the conveying device as the other devices, the second supply oil passage is configured to supply lubricating oil to the cutting blade and the conveying device as the other devices, the first supply oil passage has a first hydraulic pump for pumping lubricating oil toward the second lifting device, the second supply oil passage has a second hydraulic pump for pumping lubricating oil toward the cutting blade and the conveying device, and it is preferable to include an operation unit for driving and operating the first hydraulic pump.

[0055] According to this characteristic configuration, lubricating oil will be supplied to the cutting blade and the conveying device by the second supply oil passage. Thereby, the second supply oil passage can be shared by the cutting blade and the conveying device. Also, lubricating oil will be supplied to the second lifting device by the first supply oil passage. Thereby, lubricating oil can be supplied to the second lifting device independently of the cutting blade and the conveying device.

Brief Description of the Drawings

[0056]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Mode for Carrying Out the Invention

[0057] The mode for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of arrow F is defined as the "front side of the machine body", the direction of arrow B as the "rear side of the machine body", the direction of arrow L as the "left side of the machine body", and the direction of arrow R as the "right side of the machine body".

[0058] 〔Overall Configuration of the Combine〕 As shown in FIG. 1, a combine (self-threshing combine) includes a traveling machine body 1, a cutting unit 2 for cutting standing cereal straws, a threshing device 3 for threshing the cut cereal straws, a grain storage tank 4 for storing grains, a grain discharging device 5 for discharging the grains in the grain storage tank 4, and a driver's cab 6 for the driver to board. The traveling machine body 1 includes left and right crawler traveling devices 7 and a machine body frame 8. The machine body frame 8 is supported by the left and right crawler traveling devices 7. The cutting unit 2 is disposed in front of the traveling machine body 1. The grain storage tank 4 is disposed adjacent to the side of the threshing device 3.

[0059] 〔Cutting Unit〕 As shown in FIGS. 1 to 3, the cutting unit 2 includes a plurality (eight in this embodiment) of weeding tools 9 for weeding planted cereal straws, a plurality (seven in this embodiment) of lateral raising devices 10 (corresponding to the "first raising device" according to the present invention) for raising planted cereal straws, and a plurality (five in this embodiment) of vertical raising devices 11 (corresponding to the "second raising device" according to the present invention) provided on the front side of the lateral raising device 10 for raising planted cereal straws, a cutting blade 12 for cutting planted cereal straws, and a conveying device 13 for conveying the cut cereal straws. In this embodiment, the cutting unit 2 is a seven-row cut. The cutting unit 2 is configured to be swingable around a swing axis X1 extending along the left-right direction of the machine body. When the cutting unit 2 swings around the swing axis X1, the cutting unit 2 moves up and down between a non-working position (raised position) where the cutting unit 2 does not perform a cutting operation and a working position (lowered position) where the cutting unit 2 performs a cutting operation.

[0060] As shown in FIG. 2, the cutting unit 2 includes a raising drive shaft 15, a plurality (seven in this embodiment) of first transmission cases 16, a plurality (four in this embodiment) of cereal straw passing portions 17, and a plurality (five in this embodiment) of second transmission cases 18 (corresponding to the "transmission case" according to the present invention).

[0061] Here, the seven lateral raising devices 10 are referred to as the first to seventh lateral raising devices 10 in order from the left side. The five vertical raising devices 11 are referred to as the first to fifth vertical raising devices 11 in order from the left side. The four cereal straw passing portions 17 are referred to as the first to fourth cereal straw passing portions 17 in order from the left side.

[0062] A driving force for driving the lateral raising device 10 is transmitted to the raising drive shaft 15. The raising drive shaft 15 is provided over the upper portions of the seven lateral raising devices 10 (first transmission cases 16) so as to extend along the left-right direction of the machine body.

[0063] The first transmission case 16 is provided across the lifting drive shaft 15 and the lateral lifting device 10. The first transmission case 16 is provided 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.

[0064] The lateral lifting device 10 includes 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 claws" according to the present invention), and a lifting case 24.

[0065] 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 claws 23 rise in a posture along the left - right direction of the machine body and act to lift the standing cereal straws. The lifting claws 23 are attached to the lifting chain 22 so as to be able to rise and fall.

[0066] In FIG. 2, the path (lifting path) for lifting the standing cereal straws in the lateral lifting device 10 is indicated by R1, and the path (return path) for not lifting the standing cereal straws in the lateral lifting device 10 is indicated by R2. The lateral lifting device 10 is configured such that in the lifting path R1, the lifting claws 23 assume an upright posture with respect to the lifting chain 22, and in the return path R2, the lifting claws 23 assume a lying - down posture with respect to the lifting chain 22.

[0067] 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 is provided with a front cover 25.

[0068] The first rice straw passing portion 17 is formed between the causing path R1 side portion of the first lateral causing device 10 and the causing path R1 side portion of the second lateral causing device 10. The planted rice straws caused by the first lateral causing device 10 and the planted rice straws caused by the second lateral causing device 10 will pass through the first rice straw passing portion 17.

[0069] The second rice straw passing portion 17 is formed between the return path R2 side portion of the second lateral causing device 10 and the causing path R1 side portion of the third lateral causing device 10. The planted rice straws caused by the third lateral causing device 10 will pass through the second rice straw passing portion 17.

[0070] The third rice straw passing portion 17 is formed between the causing path R1 side portion of the fourth lateral causing device 10 and the causing path R1 side portion of the fifth lateral causing device 10. The planted rice straws caused by the fourth lateral causing device 10 and the planted rice straws caused by the fifth lateral causing device 10 will pass through the third rice straw passing portion 17.

[0071] The fourth rice straw passing portion 17 is formed between the causing path R1 side portion of the sixth lateral causing device 10 and the causing path R1 side portion of the seventh lateral causing device 10. The planted rice straws caused by the sixth lateral causing device 10 and the planted rice straws caused by the seventh lateral causing device 10 will pass through the fourth rice straw passing portion 17.

[0072] The second transmission case 18 is provided across the horizontal raising device 10 and the vertical raising device 11. Specifically, the second transmission case 18 is provided across the front surface portion of the horizontal raising device 10 and the lateral side surface portion of the vertical raising device 11 located on the raising path R1 side of the horizontal raising device 10. The second transmission case 18 is provided with a transmission mechanism (not shown) that transmits the power of the horizontal raising device 10 to the vertical raising device 11. The power of the horizontal raising device 10 will be transmitted to the vertical raising device 11 via the second transmission case 18. An opening 25a is formed in the front cover 25. The end portion of the second transmission case 18 on the side of the horizontal raising device 10 is inserted into the opening 25a.

[0073] 〔Vertical raising device〕 As shown in FIG. 4, the vertical raising device 11 includes a drive sprocket 26 (corresponding to the "upper rotating body" according to the present invention), a tension roller 27 (corresponding to the "lower rotating body" according to the present invention), a raising chain 28, a number of raising claws 29 (corresponding to the "second raising claws" according to the present invention), a rail member 30, a raising case 31, and a cam member 32.

[0074] The drive sprocket 26 is supported on the upper part of the raising case 31 so as to be rotatable around the rotation axis X2 extending in the left-right direction of the machine body. The drive sprocket 26 is connected to the second transmission case 18 so that the power of the second transmission case 18 can be transmitted. The power of the drive sprocket 19 will be 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 the rotation axis X3 extending in the left-right direction of the machine body. The tension roller 27 is configured to apply tension to the raising chain 28.

[0075] The raising chain 28 is wound around the drive sprocket 26 and the tension roller 27. The raising claws 29 rise in a posture along the front-rear direction of the machine body and act on the standing cereal straws for raising. The raising claws 29 are attached to the raising chain 28 so as to be able to rise and fall.

[0076] In FIG. 4, the path (raising path) for raising the planted cereal straws in the vertical raising device 11 is indicated by R3, and the path (return path) that does not raise the planted cereal straws in the vertical raising device 11 is indicated by R4. In the raising path R3, the raising claw 29 assumes an upright posture with respect to the raising chain 28, and in the return path R4, the raising claw 29 assumes a lying-down posture with respect to the raising chain 28.

[0077] The raising case 31 houses the drive sprocket 26, the tension roller 27, the raising chain 28, and the rail member 30. The raising case 31 is provided with 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.

[0078] The rail member 30 is provided along the inner peripheral portion of the part 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 as to be swingable around a swing axis X4 extending in the left-right direction of the machine body. When the raising claw 29 ascends along the rail member 30, the raising claw 29 is maintained in an upright posture with respect to the raising chain 28.

[0079] As shown in FIGS. 4 to 6, the rail member 30 includes a plurality (two in this embodiment) of groove portions 35 and a plurality (four in this embodiment) of reinforcing members 36. The two groove portions 35 are provided so as to be arranged along the swing axis X4 direction. The groove portion 35 opens toward the side opposite to the part of the raising chain 28 on the raising path R3 side and extends along the extending direction of the rail member 30.

[0080] The reinforcing member 36 is provided across both side walls of the groove portion 35. The four reinforcing members 36 are arranged at intervals in the extending direction of the rail member 30.

[0081] The cam member 32 swings the rail member 30. The cam member 32 is supported by the left and right side plates 33 so as to be swingable around a swing axis X5 extending along the left - right direction of the machine body. The cam member 32 fits into one of the two groove portions 35.

[0082] 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 for switching the cam member 32 between the protruding position and the retracted position is connected to the cam member 32. As shown in FIG. 4, by switching the cam member 32 to the protruding position, the rail member 30 swings forward around the swing axis X4, and the rail member 30 comes along the inner peripheral portion of the pulling - path R3 - side portion in the pulling chain 28. As shown in FIG. 7, by switching the cam member 32 to the retracted position, the rail member 30 swings backward around the swing axis X4, and the rail member 30 separates from the inner peripheral portion of the pulling - path R3 - side portion in the pulling chain 28.

[0083] 〔Oil - injection device〕 As shown in FIG. 8, the combine is provided with an oil - injection device A for automatically injecting lubricating oil into the vertical pulling device 11. Specifically, although described later, the oil - injection device A is configured to automatically inject lubricating oil into other devices separate from the vertical pulling device 11 (in this embodiment, the cutting blade 12 and the conveying device 13). The oil - injection device A includes an oil - injection tank T for storing lubricating oil, a hydraulic pump P1 (corresponding to the "first hydraulic pump" according to the present invention) for pumping the lubricating oil toward the vertical pulling device 11, an oil - injection hose 38 for sending the lubricating oil to the vertical pulling device 11, and a nozzle 39 for injecting (spraying) the lubricating oil from the oil - injection hose 38. The hydraulic pump P1 is provided in the middle of the oil - injection hose 38. The oil - injection hose 38 is arranged to extend from the oil - injection tank T toward each vertical pulling device 11.

[0084] As shown in FIGS. 9 and 10, the oil injection hose 38 is arranged to pass through the opening 25a and extend forward from the lateral lifting device 10. That is, an opening 25a for passing the oil injection hose 38 is formed in the front surface portion (front cover 25) of the lateral lifting device 10. The portion of the opening 25a through which the oil injection hose 38 passes is located on the side opposite to 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 the portion of the oil injection hose 38 located inside the lifting case 24. The relay pipe 40 is a substantially L-shaped tubular member.

[0085] The oil injection hose 38 is arranged along the second transmission case 18. Specifically, the oil injection hose 38 is arranged along the portion of the second transmission case 18 on the side opposite to the lifting path R1 of the lateral lifting device 10. In front of the lateral lifting device 10, a clamp 46 (corresponding to the "guiding member" according to the present invention) for guiding the oil injection hose 38 is provided. The oil injection hose 38 is supported by the second transmission case 18 via the clamp 46.

[0086] As shown in FIG. 4, the nozzle 39 is provided inside the lifting case 31. The oil injection hose 38 is connected to the nozzle 39. The nozzle 39 is configured to directly inject lubricating oil into the inner peripheral portion of the return path R4 side portion of the lifting chain 28. That is, the nozzle 39 is configured to inject (eject) lubricating oil in a direction opposite to the rail member 30. Inside the lifting case 31, a stay 41 for supporting the nozzle 39 is provided. The nozzle 39 is supported by the lifting case 31 via the stay 41.

[0087] An insertion hole 33a into which the oil injection 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 portion of the side plate 33.

[0088] As shown in FIGS. 5 and 6, the oil injection hose 38 passes through the inside of the groove portion 35. Specifically, the oil injection hose 38 passes through the inside of the groove portion 35 different from the groove portion 35 into which the cam member 32 has entered among the two groove portions 35. Among the four reinforcing members 36, the upper two reinforcing members 36 also serve as members for guiding the oil injection hose 38 so that the oil injection hose 38 does not come out of the inside of the groove portion 35.

[0089] As shown in FIG. 7, the nozzle 39 is arranged on the inner peripheral side with respect to the chain 28 for starting and at a position avoiding the swing range of the rail member 30. That is, the nozzle 39 does not overlap the rail member 30 in a side view. The insertion hole 33a is formed on the inner peripheral side of the side plate 33 with respect to the chain 28 for starting and at a position avoiding the swing range of the rail member 30 and the shaft member 34. That is, the insertion hole 33a does not overlap the rail member 30 and the shaft member 34 in a side view.

[0090] As shown in FIGS. 11 and 12, the stay 41 includes a mounting portion 41a, a mounted portion 41b, and a contact portion 41c. The nozzle 39 is attached to the mounting portion 41a. The mounted portion 41b is attached to the starting case 31 (side plate 33). The contact portion 41c is located between the inner peripheral portion of the return path R4 side portion of the starting chain 28 and the nozzle 39. The contact portion 41c is configured such that the starting claw 29 in the fallen posture comes into contact therewith. In the return path R4 of the starting chain 28, when the starting claw 29 in the fallen posture comes into contact with the contact portion 41c, the starting claw 29 is temporarily changed to the standing posture.

[0091] As shown in Fig. 13, the oil injection device A is configured to automatically inject lubricating oil into the vertical lifting device 11, the cutting blade 12, and the conveying device 13. That is, the oil injection device A is configured to automatically inject lubricating oil into other devices (in this embodiment, the cutting blade 12 and the conveying device 13) separate from the vertical lifting device 11. The oil injection device A includes a supply oil passage 42 (corresponding to the "first supply oil passage" according to the present invention) for supplying 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) for supplying lubricating oil to the cutting blade 12, a supply oil passage 44 (corresponding to the "second supply oil passage" according to the present invention) for supplying lubricating oil to the conveying device 13, and an oil injection tank T for storing the lubricating oil.

[0092] The supply oil passage 42 includes a hydraulic pump P1 for pumping the lubricating oil in the oil injection tank T toward the vertical lifting device 11. The supply oil passage 42 branches from the supply oil passage 43.

[0093] The supply oil passage 43 is configured to supply lubricating oil to the cutting blade 12 as another device separate from the vertical lifting device 11. The supply oil passage 43 includes a hydraulic pump P2 (corresponding to the "second hydraulic pump" according to the present invention) for pumping the lubricating oil in the oil injection tank T toward the cutting blade 12.

[0094] The supply oil passage 44 is configured to supply lubricating oil to the conveying device 13 as another device separate from the vertical lifting device 11. The supply oil passage 44 includes a hydraulic pump P3 (corresponding to the "second hydraulic pump" according to the present invention) for pumping the lubricating oil in the oil injection tank T toward the conveying device 13.

[0095] Inside the operation cab 6, an operation unit 45 for driving and operating the hydraulic pump P1, the hydraulic pump P2, and the hydraulic pump P3 is provided. In this embodiment, the operation unit 45 is a seesaw switch. The operation unit 45 includes a button 45a and a button 45b.

[0096] When the driver presses button 45a, hydraulic pump P1 and hydraulic pump P3 will be driven. That is, 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 the oil injection tank T will flow toward the vertical lifting device 11 and the conveying device 13 as indicated by arrow S1.

[0097] When the driver presses button 45b, hydraulic pump P2 will be driven. When hydraulic pump P2 is driven, the lubricating oil in the oil injection tank T will flow toward the cutting blade 12 as indicated by arrow S2.

[0098] As shown in FIG. 8, the supply oil passage 42 includes an oil injection hose 38 for sending lubricating oil to the vertical lifting device 11. The oil injection hose 38 includes a plurality (four in this embodiment) of branch portions D1, D2, D3, D4 for branching the flow of the lubricating oil, and a plurality (five in this embodiment) of first branch hoses 38a (corresponding to the "branch oil passage" according to the present invention), second branch hoses 38b (corresponding to the "branch oil passage" according to the present invention), third branch hoses 38c (corresponding to the "branch oil passage" according to the present invention), fourth branch hoses 38d (corresponding to the "branch oil passage" according to the present invention), and fifth branch hoses 38e (corresponding to the "branch oil passage" according to the present invention).

[0099] 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.

[0100] The second branch hose 38b is connected to the branch portion D4. The second branch hose 38b supplies the lubricating oil branched by the branch portion D4 to the second vertical lifting device 11.

[0101] 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.

[0102] 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 hoisting device 11.

[0103] The fifth branch hose 38e is connected to the branch portion D1. The fifth branch hose 38e supplies the lubricating oil branched by the branch portion D1 to the fifth vertical hoisting device 11.

[0104] Here, the volume of the first branch hose 38a and the volume of the second branch hose 38b are the same as or substantially the same as each other. The volume of the third branch hose 38c and the volume of the fourth branch hose 38d are the same as or substantially the same as each other.

[0105] 〔Alternative Embodiment〕 (1) In the above embodiment, the insertion hole 33a is formed at a position on the inner peripheral side of the side plate 33 with respect to the hoisting chain 28 and avoiding the swing range of the rail member 30. However, the insertion hole 33a may be formed at a position on the outer peripheral side of the side plate 33 with respect to the hoisting chain 28.

[0106] (2) In the above embodiment, the oil injection hose 38 is passed through the inside of the groove portion 35. However, the oil injection hose 38 may not be passed through the inside of the groove portion 35.

[0107] (3) In the above embodiment, the oil injection hose 38 is arranged along the portion of the second transmission case 18 on the side opposite to the hoisting path R1 of the horizontal hoisting device 10. However, the oil injection hose 38 may be arranged along the upper or lower portion of the second transmission case 18.

[0108] (4) In the above embodiment, the oil injection hose 38 is arranged along the second transmission case 18. However, the oil injection hose 38 may not be arranged along the second transmission case 18.

[0109] (5) In the above-described embodiment, the nozzle 39 is disposed on the inner peripheral side with respect to the triggering chain 28 and at a position avoiding the swing range of the rail member 30. However, the nozzle 39 may be disposed at a position on the outer peripheral side with respect to the triggering chain 28 in the side plate 33.

[0110] (6) In the above-described embodiment, the nozzle 39 is configured to directly inject lubricating oil into the inner peripheral portion of the return path R4 side portion of the triggering chain 28. However, the nozzle 39 may be configured to directly inject lubricating oil into the outer peripheral portion of the return path R4 side portion of the triggering chain 28. Further, the nozzle 39 may be configured to directly inject lubricating oil into the inner peripheral portion of the triggering path R3 side portion of the triggering chain 28. Further, the nozzle 39 may be configured to directly inject lubricating oil into the outer peripheral portion of the triggering path R3 side portion of the triggering chain 28.

[0111] (7) In the above-described embodiment, the nozzle 39 is configured to directly inject lubricating oil into the triggering chain 28. However, the nozzle 39 may be configured to indirectly inject lubricating oil into the triggering chain 28.

[0112] (8) In the above-described embodiment, the nozzle 39 is configured to inject lubricating oil in a direction opposite to the rail member 30. However, the nozzle 39 may be configured to inject lubricating oil in the direction of the rail member 30 side.

[0113] (9) In the above-described embodiment, the volume of the first branch hose 38a and the volume of the second branch hose 38b are the same as or substantially the same as each other, and the volume of the third branch hose 38c and the volume of the fourth branch hose 38d are the same as or substantially the same as each other. However, the present invention is not limited to the configuration according to the above-described 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 as or substantially 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.

[0114] (10) In the above-described embodiment, the oil injection device A is configured to automatically inject lubricating oil also into other devices (in the above-described embodiment, the cutting blade 12 and the conveying device 13) that are different from the vertical lifting device 11. However, the present invention is not limited to the configuration according to the above-described embodiment. For example, other devices different from the vertical lifting device 11 may be devices other than the cutting blade 12 and the conveying device 13. Also, the oil injection device A may be configured to automatically inject lubricating oil only into the vertical lifting device 11.

[0115] (11) In the above-described 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.

[0116] (12) In the above-described embodiment, the operation unit 45 is a seesaw switch. However, the operation unit 45 may be an operation unit other than the seesaw switch.

[0117] (13) In the above-described embodiment, the supply oil passage 42 branches from the supply oil passage 43. However, as shown in FIG. 14, the supply oil passage 42 may be directly connected to the oil injection tank T. That is, the supply oil passage 42, the supply oil passage 43, and the supply oil passage 44 may each be directly connected to the oil injection tank T.

[0118] Also, as shown in FIG. 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. Also in the example shown in FIG. 15, similar to the example shown in FIG. 14, the supply oil passage 42 is directly connected to the oil supply 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 supply tank T flows toward the vertical lifting device 11 as indicated 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 supply tank T flows toward the cutting blade 12 and the conveying device 13 as indicated by the arrow S2.

Industrial Applicability

[0119] The present invention can be applied to a combine harvester.

Explanation of Signs

[0120] 2 Cutting unit 10 Horizontal lifting device (first lifting device) 11 Vertical lifting device (second lifting device) 12 Cutting blade 13 Conveying device 18 Second transmission case (transmission case) 23 Lifting claw (first lifting claw) 25a Opening 26 Driving sprocket (upper rotating body) 27 Tension roller (lower rotating body) 28 Lifting chain 29 Lifting claw (second lifting claw) 30 Rail member 31 Lifting 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 portion 46 Clamp (guide member) A Oil supply device D1 Branch portion D2 Branch portion D3 Branch portion D4 Branch portion P1 Hydraulic pump (first hydraulic pump) P2 Hydraulic pump (second hydraulic pump) P3 Hydraulic pump (second hydraulic pump) R1 Inducing path R3 Inducing path R4 Return path T Oil supply tank X2 Rotation axis center X3 Rotation axis center X4 Rocking axis center

Claims

1. A combine harvester equipped with a cutting unit for cutting standing cereal straws, wherein the cutting unit has a plurality of first lifting devices each having a number of first lifting claws that rise in a posture along the left - right direction of the machine body and act on the standing cereal straws to lift them; and a second lifting device provided in front of the first lifting device, having a number of second lifting claws that rise in a posture along the front - rear direction of the machine body and act on the standing cereal straws to lift them, and is equipped with an oil - injection device for automatically injecting lubricating oil into the second lifting device, wherein the second lifting device has an upper rotating body rotatable around a rotation axis extending along the left - right direction of the machine body, a lower rotating body rotatable around a rotation axis extending along the left - right direction of the machine body, a lifting chain wound around the upper rotating body and the lower rotating body, a number of the second lifting claws attached to the lifting chain so as to be able to undulate, is provided along the inner peripheral portion of the lifting - path side portion of the lifting chain so as to be swingable around a swing axis extending along the left - right direction of the machine body, and maintains the second lifting claws in an upright posture with respect to the lifting chain; has left and right side plates, and a lifting case that houses the upper rotating body, the lower rotating body, the lifting chain, and the rail member, wherein the oil - injection device has an oil - injection hose for sending lubricating oil to the second lifting device, a plug - in hole into which the oil - injection hose is inserted is formed in the lifting case, and the plug - in hole is formed at a position avoiding the swing range of the rail member, a combine harvester.

2. The lifting case has a shaft member provided between the left side plate and the right side plate, and the plug - in hole is formed at a position on the side plate avoiding the shaft member, the combine harvester according to Claim 1.

3. The rail member has a groove portion that opens toward the side opposite to the lifting - path side portion of the lifting chain and extends along the extending direction of the rail member, and the oil - injection hose passes through the inside of the groove portion, the combine harvester according to Claim 1 or 2.

4. The rail member has reinforcing members provided across both side walls of the groove portion, and the reinforcing members also serve as members for guiding the oil - injection hose, the combine harvester according to Claim 3.

5. The second lifting device has a cam member for swing - operating the rail member, and the rail member has a plurality of the groove portions provided so as to be arranged along the swing - axis direction. The cam member is inserted into one of the plurality of groove portions. The oil injection hose of the combine according to claim 3 is passed through the inside of a groove portion different from the groove portion into which the cam member is inserted among the plurality of groove portions.

6. The oil injection hose in the oil injection device is arranged to extend forward from the first causing device. The combine according to claim 1, wherein a guide member for guiding the oil injection hose is provided in front of the first causing device.

7. It has a transmission mechanism for transmitting the power of the first causing device to the second causing device, and includes a transmission case provided across the first causing device and the second causing device. The oil injection hose of the combine according to claim 6 is arranged along the transmission case.

8. The transmission case is provided across the front surface portion of the first causing device and the lateral side surface portion on the causing path side of the first causing device in the second causing device. The oil injection hose of the combine according to claim 7 is arranged along a portion of the transmission case opposite to the causing path of the first causing device.

9. An opening for passing the oil injection hose is formed in the front surface portion of the first causing device in the combine according to claim 7 or 8.

10. The end portion of the transmission case on the side of the first causing device is inserted into the opening. The portion through which the oil injection hose passes in the opening is located on the side opposite to the causing path of the first causing device with respect to the transmission case in the combine according to claim 9.

11. A metal relay pipe is provided in a portion of the oil injection hose located inside the first causing device in the combine according to any one of claims 6 to 8.

12. The oil injection device is provided inside the causing case and has a nozzle for injecting lubricating oil from the oil injection hose. The nozzle is arranged on the inner peripheral side with respect to the causing chain and at a position avoiding the swing range of the rail member in the combine according to claim 1.

13. The nozzle of the combine according to claim 12 is configured to inject lubricating oil in a direction opposite to the rail member.

14. The nozzle of the combine according to claim 12 or 13 is configured to directly inject lubricating oil into the causing chain.

15. The combine according to claim 14, wherein the nozzle is configured to directly inject lubricating oil into the inner peripheral portion of the causing chain.

16. The combine according to claim 15, wherein the nozzle is configured to directly inject lubricating oil into the inner peripheral portion of the return path side portion of the causing chain.

17. The second causing device is configured to be in a falling posture in which the second causing claw falls with respect to the causing chain in the return path, A stay for supporting the nozzle is provided inside the causing case, The stay is located between the inner peripheral portion of the return path side portion of the causing chain and the nozzle, and has a contact portion with which the second causing claw in the falling posture comes into contact, The combine according to claim 16, wherein in the return path of the causing chain, when the second causing claw in the falling posture comes into contact with the contact portion, the second causing claw is temporarily changed to the standing posture.

18. The oil injection device is configured to automatically inject lubricating oil into another device different from the second causing device, The oil injection device is, A first supply oil path for supplying lubricating oil to the second causing device, And a second supply oil path for supplying lubricating oil to the other device, the combine according to claim 1.

19. The cutting unit has a plurality of the second causing devices, The first supply oil path is, A branch portion for branching the flow of lubricating oil, And a plurality of branch oil paths connected to the branch portion and supplying the lubricating oil branched by the branch portion to the second causing device, The combine according to claim 18, wherein the volumes of the plurality of branch oil paths are the same or substantially the same.

20. The cutting unit has a cutting blade for cutting standing crop straws, The oil injection device is configured to automatically inject lubricating oil into the cutting blade as the other device, The second supply oil path is configured to supply lubricating oil to the cutting blade as the other device, The combine according to claim 18 or 19, wherein the first supply oil path branches from the second supply oil path.

21. The cutting unit has a conveying device for conveying the cut crop straws, The oil injection device is configured to automatically inject lubricating oil into the conveying device as the other device, The second supply oil path is configured to supply lubricating oil to the conveying device as the other device, The first supply oil passage has a first hydraulic pump that pumps lubricating oil toward the second starting device. The second supply oil passage has a second hydraulic pump that pumps lubricating oil toward the conveying device. The combine according to claim 18 or 19, wherein the first hydraulic pump and the second hydraulic pump are configured to be driven simultaneously.

22. The first supply oil passage has a first hydraulic pump that pumps lubricating oil toward the second starting device. It includes an operation unit for driving and operating the first hydraulic pump. The combine according to claim 18 or 19, wherein the operation unit is a seesaw switch.

23. The oiling device has an oiling tank for storing lubricating oil. The first supply oil passage has a first hydraulic pump that pumps the lubricating oil in the oiling tank toward the second starting device. The second supply oil passage has a second hydraulic pump that pumps the lubricating oil in the oiling tank toward the other device. The combine according to claim 18 or 19, wherein the first supply oil passage and the second supply oil passage are each directly connected to the oiling tank.

24. The cutting unit has a cutting blade for cutting standing cereal straws, and a conveying device for conveying the cut cereal straws. The oiling device is configured to automatically oil lubricating oil to the cutting blade and the conveying device as the other devices. The second supply oil passage is configured to supply lubricating oil to the cutting blade and the conveying device as the other devices. The first supply oil passage has a first hydraulic pump that pumps lubricating oil toward the second starting device. The second supply oil passage has a second hydraulic pump that pumps lubricating oil toward the cutting blade and the conveying device. The combine according to claim 18 or 19, further comprising an operation unit for driving and operating the first hydraulic pump.

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