JP2023150888A - combine - Google Patents

Abstract

To provide a combine capable of smoothly changing a state of a receiver.SOLUTION: A combine comprises: a driving part; a cabin for covering the driving part; and a positioning unit comprising, a receiver 21 for receiving a signal from a satellite, and a support member 22 for supporting the receiver and being supported to the cabin so as to change its position. The positioning unit can be changed in its state between, a first state and a second state in which, the receiver 21 is at a higher position than a position in the first state. In plan view of the machine body, an end P1 of the support member 22 opposite to the cabin, in the first state of the positioning unit, is closer to the cabin, relative to an end P2 on the support member 22 opposite to the cabin, when the positioning unit is in the second state.SELECTED DRAWING: Figure 7

Description

The present invention relates to a combine harvester.

For example, the combine harvester disclosed in Patent Document 1 is equipped with a receiving device ("GPS antenna" in the document) that is supported by a support member ("attitude change mechanism" in the document) and receives signals from a satellite. The receiving device is configured to be able to change its state between a first state ("retracted state" in the literature) and a second state located at a higher position than the first state ("standing state" in the literature). There is. When the receiving device of the combine receives a signal from a satellite, the receiving device enters the second state in order to improve positioning accuracy. Additionally, when the combine harvester is stored in a storage facility such as a barn outside of the harvest season, the receiving device is set to the first state so that the combine can fit in the storage facility even if the ceiling of the storage facility is low. Become.

JP 2021-6005 Publication

By the way, when the state of the receiving device is changed and the height position of the receiving device is changed, it is necessary to avoid interference between the receiving device and other members. There may be many other members arranged around the cabin, and the lower the height position, the higher the possibility of interference with other members.

An object of the present invention is to provide a combiner that can smoothly change the state of a receiving device.

The combine harvester of the present invention includes: an operating section, a cabin that covers the operating section, a receiving device that receives signals from a satellite, and a support member that is supported by the cabin so that its position can be changed and that supports the receiving device. a positioning unit, the positioning unit is configured to be able to change its state between a first state and a second state in which the receiving device is located at a higher position than the first state; In plan view, the end of the support member opposite to the cabin when the positioning unit is in the first state is the end of the support member opposite to the cabin when the positioning unit is in the second state. It is characterized by being located at a position closer to the cabin than the end opposite to the cabin.

When the positioning unit is in the first state, the receiving device and the support member are located at a lower position than when the positioning unit is in the second state. Therefore, when the positioning unit is in the first state, the receiving device and the support member are more likely to interfere with other members than when the positioning unit is in the second state. According to the present invention, when the positioning unit is in the first state, the end of the support member on the opposite side from the cabin is located closer to the cabin than when the positioning unit is in the second state. Thereby, the possibility that the receiving device and the support member will interfere with other members is reduced, and a combine that can smoothly change the state of the receiving device is realized.

In the present invention, it is preferable that the support member is supported by a side portion of the cabin so as to be able to swing around a longitudinal axis.

According to this configuration, since the axis of swing is in the front-back direction, when the positioning unit changes the state from the second state to the first state, the receiving device and the support member swing downward while the support member approaches the cabin. This reduces the possibility that the receiving device and the support member will interfere with other members.

In the present invention, when the positioning unit is in the second state, it is preferable that the receiving device overlaps the roof of the cabin in a side view of the aircraft.

With this configuration, when the positioning unit is in the second state, the signal reception state of the receiving device is good, and accurate positioning is possible.

In the present invention, when the positioning unit is in the second state, the upper end of the receiving device is higher than the roof, and the supporting member does not protrude above the upper end of the roof. It is preferable that the configuration is such that:

With this configuration, the receiving device is located at a position as high as possible, yet within easy reach of the operator. Furthermore, when the positioning unit is in the second state, the support member does not protrude above the upper end of the roof. Thereby, the operator can change the state of the positioning unit between the first state and the second state by extending his hand from the driving section to the support member.

In the present invention, there is provided a threshing device that threshes harvested crops, a grain tank that stores the threshed grains, and a grain tank that is connected to a rear lower part of the grain tank and that stores the grains in the grain tank. a vertical conveyance section that vertically conveys the grains, and a horizontal conveyance section that is connected to the upper end of the vertical conveyance section and has a discharge port, and that transports the grains from the vertical conveyance section horizontally and discharges them from the discharge port. , and the lateral conveyance section is configured to be able to move up and down and turn left and right, and to move from a stored state stored in a home position straddling the center portion of the fuselage to the outside of the fuselage in a plan view. The grains can be ejected by projecting out, and the positioning unit is configured such that when in the first state, the entire positioning unit is located at a lower position than an upper end of the lateral conveying section in the stored state, and Preferably, in the second state, at least the receiving device of the positioning unit is located at a higher position than in the first state.

According to this configuration, when the positioning unit is in the first state, the entire positioning unit is located at a position lower than the upper end of the horizontal conveyance section. Since the lateral conveying section of the conveying device is located at a relatively high position in the combine, when the positioning unit is in the first state, the total height of the combine can be kept to the same level as the total height of a conventional combine without a positioning unit. It becomes easier. This avoids interference between the ceiling and the positioning unit even if the ceiling of the storage unit in which the combine is stored is low, making it possible to store the combine of the present invention in the same storage unit as a conventional combine. Become. Furthermore, when the positioning unit is in the second state, the receiving device is located at a higher position than when it is in the first state. Therefore, the positioning accuracy of the receiving device during harvesting work becomes better than when the positioning unit is in the first state. This makes it possible to both ensure positioning accuracy during harvesting and save space during storage. Furthermore, with this configuration, when the positioning unit is in the first state, the end of the support member on the opposite side to the cabin is located closer to the cabin than when the positioning unit is in the second state. Therefore, the possibility that the receiving device and the support member will interfere with the horizontal conveyance section is reduced.

In the present invention, when the positioning unit is in the first state, it is preferable that the receiving device overlaps with the lateral conveyance section in the stored state when viewed from a side of the body.

With this configuration, the receiving device is located at a relatively high position when the positioning unit is in the first state. Therefore, the amount of movement of the receiving device when changing the state from the first state to the second state is relatively small, making the state change easier.

In the present invention, it is preferable that the receiving device is always located between the cabin and the lateral conveyance section in plan view of the aircraft, regardless of the state of the positioning unit.

According to this configuration, the amount of movement of the receiving device when changing the state between the first state and the second state is relatively small, making it easy to change the state.

In the present invention, it is preferable that when the positioning unit is in the first state, the receiving device is located in a space between the cabin and the horizontal conveyance section.

According to this configuration, the gap space between the cabin and the horizontal conveyance section is effectively utilized for arranging the receiving device in the first state.

In the present invention, an arm portion provided in the support member and supported by the cabin so as to be able to vertically swing together with the receiving device about a swing axis along the longitudinal direction of the aircraft; and the positioning unit. When in the first state, a first regulating part contacts the arm part from below to regulate downward swinging of the arm part; and when the positioning unit is in the second state, the arm part contacts the arm part from below and controls the downward swinging of the arm part. It is preferable that a second restricting portion is provided, which contacts the arm portion from above and restricts upward swinging of the arm portion.

With this configuration, the first state and the second state of the positioning unit are stably maintained. Further, since upward swinging of the arm portion is restricted when the positioning unit is in the second state, vibration of the receiving device is suppressed and positioning can be performed with high accuracy.

In the present invention, the first regulating part is located below the swing axis, and the second regulating part is located above the swing axis, and the first regulating part and the swing axis are located above the swing axis. It is preferable that the second restriction part extends from the cabin in the lateral direction of the aircraft body, and the first restriction part extends further away from the cabin than the second restriction part. In addition, an angular difference between the angle of the arm section when the first regulating section and the arm section come into contact with each other and the angle of the arm section when the second regulating section and the arm section come into contact with each other. is preferably 90 degrees or approximately 90 degrees.

According to this configuration, the first restricting portion is located below the swing axis and extends further away from the cabin than the second restricting portion. Thereby, when the positioning unit is in the first state, the arm part is firmly supported by the second restriction part. Further, the second restricting portion is located above the swing axis, and the extending end portion of the second restricting portion is located closer to the cabin than the extending end portion of the first restricting portion. Thereby, when the positioning unit is in the second state, it becomes possible to arrange the receiving device at a position as high as possible.

In the present invention, the positioning unit is supported by the cabin so as to be swingable around an axis along the longitudinal direction of the aircraft, and has a locked state in which the positioning unit is held in the second state, and a locked state in which the positioning unit is held in the second state. A holding part is provided that can change the state to an unlocked state in which the position is not held, and the arm part is provided with an engaging part that can be engaged with the holding part, and the holding part is arranged such that the arm part is in an upward state. When the holding part is swung and the pressing force of the engaging part is applied to the holding part, the arm part is swung to a higher position than in the locked state, and the arm part is swung upward and Preferably, when the positioning unit changes to the second state, the positioning unit swings downward and engages with the engaging portion, thereby changing the state to the locked state.

According to this configuration, when the operator swings the arm upward when changing the state of the positioning unit to the second state, the holding part also swings upward accordingly. There is no need to go through the trouble of doing so. Furthermore, when the positioning unit changes its state to the second state due to further upward swinging of the arm part, the holding part enters the locked state. Thus, according to this configuration, it becomes possible to easily change the state of the positioning unit to the second state.

FIG. 2 is an overall side view of the combine harvester. FIG. 2 is an overall plan view of the combine harvester. FIG. 3 is a left side view of the aircraft body showing the positioning unit. FIG. 3 is a front view of the aircraft body showing a positioning unit and a lateral transport section. FIG. 4 is a sectional view taken along the line VV in FIG. 3 showing a lock pin fitting structure in the swing bearing portion. FIG. 6 is a rear view of the aircraft body showing a second state of the positioning unit. FIG. 3 is a rear view of the aircraft body showing a first state and a second state of the positioning unit.

Hereinafter, the combine harvester of this embodiment will be explained using a self-removal type combine harvester as an example.

FIG. 1 is a left side view of the combine, and FIG. 2 is a plan view of the combine. Here, for ease of understanding, in this embodiment, unless otherwise specified, "front" (direction of arrow "F" shown in FIG. 1) means the front in the longitudinal direction (traveling direction) of the aircraft. , "rear" (direction of arrow "B" shown in FIG. 1) means the rear in the longitudinal direction (traveling direction) of the aircraft. Furthermore, "up" (direction of arrow "U" shown in Figure 1) and "down" (direction of arrow "D" shown in Figure 1) are positional relationships in the vertical direction (direction perpendicular to the horizontal plane). , shall show the relationship at ground level. Furthermore, the left-right direction or the lateral direction means a cross-body direction (body width direction) orthogonal to the body longitudinal direction. That is, "left" (direction of arrow "L" shown in FIG. 2) and "right" (direction of arrow "R" shown in FIG. 2) mean the left direction and right direction of the aircraft, respectively. . The same applies to the drawings from FIG. 3 onwards.

[About the entire combine harvester]
As shown in FIG. 1, a traveling body 1 of a combine harvester includes a body frame 2, and the body frame 2 is constructed by connecting a plurality of steel materials such as square pipe materials. A pair of left and right crawler-type traveling devices 3 are installed at the bottom of the fuselage frame 2. A driving section 5 is provided on the right side of the front part of the traveling body 1. An engine E is arranged below the driving section 5. The driving section 5 is covered by a cabin 10.

A reaping section 4 is provided at the front of the traveling body 1 so as to be movable up and down. The reaping section 4 reaps planted grain culms (crops) of rice or wheat in a plurality of planting rows in front of the traveling machine body 1 while raising them, and conveys the harvested grain culms toward the rear of the machine body. A threshing device 6 and a grain tank 8 are supported side by side at the rear of the body frame 2. The threshing device 6 is arranged at the rear of the reaping section 4, and the grain tank 8 is arranged at the rear of the driving section 5. A feed chain 7 is provided on the left side of the threshing device 6, and the feed chain 7 pinches and conveys the harvested grain culm cut by the reaping section 4 to the rear. In the threshing device 6, the input harvested grain culm is threshed, and a sorting process is performed to separate the grains and dust obtained by the threshing process. The grain tank 8 stores grains that have been threshed and transported from the threshing device 6. A grain discharge device 9 for taking out grains from the grain tank 8 is connected to the rear part of the grain tank 8. The grain discharging device 9 corresponds to the "conveying device" of the present invention.

The grain discharge device 9 is equipped with a vertical conveyance section 9A and a horizontal conveyance section 9B. The vertical conveyance section 9A is connected to the rear lower part of the grain tank 8, and vertically conveys the grains stored in the grain tank 8. The horizontal conveyance section 9B is connected to the upper end of the vertical conveyance section 9A, and horizontally conveys grains from the vertical conveyance section 9A. A discharge port 9C is provided at the lower end of the horizontal conveyance section 9B in the conveyance direction. The horizontal conveyance section 9B conveys the grains from the vertical conveyance section 9A to the discharge port 9C, and discharges them out of the machine from the discharge port 9C.

The lateral conveyance section 9B is configured to be able to move up and down and turn left and right. As shown in FIGS. 1 and 2, when the grain discharging device 9 is not used, the lateral conveyance section 9B is located above the threshing device 6 and the grain tank 8, and in the central part of the machine body in plan view. It extends from front to back while straddling the . The state of the horizontal conveyance section 9B at this time is referred to as a "storage state." Further, the position of the horizontal conveyance section 9B at this time is referred to as a "home position."

When the grain discharging device 9 is used, the lateral conveyance section 9B can extend from the stored state stored at the home position to the outside of the machine body and discharge the grains. Here, the outside of the fuselage refers to the left side of the left side of the threshing device 6 (lateral outside of the fuselage), the right side of the right side of the grain tank 8 (lateral outside of the fuselage), and the side of the threshing device 6 and the grain tank 8. It means the rear side of each rear end. That is, when the grain discharge device 9 is used, the lateral conveyance section 9B extends from the traveling body 1 to the right and left sides or to the side away from the rear, and discharges the grains stored in the grain tank 8.

The combine harvester of this embodiment is equipped with a positioning unit 20. The positioning unit 20 has a receiving device 21 . The receiving device 21 receives a GNSS (Global Navigation Satellite System, such as GPS, GLONASS, Galileo, QZSS, BeiDou, etc.) signal from an artificial satellite (not shown) and acquires the vehicle position. . In addition, in order to supplement the satellite navigation by the positioning unit 20, an inertial navigation unit 19 incorporating a gyro acceleration sensor and a magnetic azimuth sensor is provided. Note that, as will be described later, the inertial navigation unit 19 is arranged at a different location from the positioning unit 20 in the combine.

[Operation department]
The driving unit 5 is provided so as to be offset to the right side of the machine body with respect to the center of the machine body. As shown in FIGS. 1 and 2, the driving section 5 is covered by a cabin 10. The driving section 5 includes a seat 11, a front panel 12 located in front of the seat 11, and a side panel 13 located to the left of the seat 11. A seat 11 is provided in the central area of the driving section 5 . A driver sits on the seat 11. The side panel 13 is provided on the left side of the seat 11. In other words, the side panel 13 is provided on the side of the driving section 5 opposite to the side where the entrance/exit is located.

A front panel 12 is provided with a steering control lever 16 and a meter panel 17. The steering control lever 16 is an operating tool for driving, and is provided at the right end of the front panel 12 and located in front of the seat 11. The meter panel 17 is provided at the left and right center portions of the front panel 12. A passenger riding in the driving section 5 can steer the traveling device 3 by operating the steering lever 16 . The meter panel 17 displays, for example, the traveling speed, engine speed, remaining fuel amount, etc. Further, a passenger riding in the driving section 5 can operate the meter panel 17 as necessary, and display items on the meter panel 17 are changed in accordance with the passenger's operation.

The side panel 13 is provided with a main shift operation lever 18 and the like. The main shift operation lever 18 is arranged at the front of the side panel 13. The main shift operation lever 18 is constituted by a lever that can be operated to swing in the front and rear directions. A passenger riding in the driving section 5 can shift the main transmission (not shown) by operating the main shift operation lever 18 . Side panel 13 is adjacent to the left side wall of cabin 10.

Further, inside the side panel 13, an inertial navigation unit 19 is provided at a position below the rear of the swinging shaft of the main shift operation lever 18. The inertial navigation unit 19 is located lower than the positioning unit 20 in the combine. Therefore, compared to a configuration in which the inertial navigation unit 19 is arranged at the same height as the positioning unit 20, the inertial navigation unit 19 is less susceptible to the vibrations of the combine. As shown in FIG. 2, the inertial navigation unit 19 is located in the center area in the left-right direction of the aircraft. The inertial navigation unit 19 is located below the positioning unit 20.

A sliding window 10W is provided on the left side wall of the cabin 10. The window 10W exists across the upper surface of the side panel 13 and the roof 10R of the cabin 10 in the vertical direction. The cabin 10 is equipped with a frame portion 10F for supporting the roof 10R. The frame portion 10F is located above the window 10W, that is, at the top of the left side wall portion of the cabin 10, and extends along the longitudinal direction of the aircraft body. The positioning unit 20 is supported by the frame portion 10F. The frame portion 10F serves to support the roof 10R, the positioning unit 20, and the window 10W.

A box-shaped upper protrusion 40 is provided at the rear of the seat 11. The upper surface of the upper protrusion 40 is located at a height corresponding to the upper part of the backrest portion of the seat 11. A rear wall portion of the cabin 10 is supported by the upper protrusion 40 . Although not described in detail, an intake air cleaner for the engine E, an electronic control unit (so-called ECU), and the like are housed inside the upper protrusion 40.

[About the positioning unit]
The positioning unit 20 will be explained based on FIGS. 3 to 7. The positioning unit 20 of this embodiment includes a receiving device 21 and a support member 22. The support member 22 is movably supported by the cabin 10 and supports the receiving device 21 . The support member 22 is supported by the side portion of the cabin 10 in a state in which it can swing around a swing axis X1 in the front and rear direction. The support member 22 includes an arm portion 22A and a plate portion 22B. The support member 22 is supported by the cabin 10 via a proximal support portion 24 .

The proximal support portion 24 is bolted to the frame portion 10F. The base end support part 24 is provided with a swing bearing part 25, and the swing base end part 22t of the arm part 22A is fitted into the swing bearing part 25. The swing base end portion 22t is swingable around a swing axis X1 along the longitudinal direction of the body. A portion of the arm portion 22A between the swinging base end 22t and the free end is bent into an L-shape with respect to the swinging base end 22t. That is, a portion of the arm portion 22A that is closer to the free end than the swing base end 22t is supported by the base end support portion 24 so as to be swingable around the swing axis X1. The free end portion of the arm portion 22A is located on the front side of the swinging base end portion 22t. A plate portion 22B is connected to the free end portion of the arm portion 22A by welding. The receiving device 21 is bolted to the plate portion 22B.

The lateral conveyance section 9B is located farther away from the cabin 10 toward the front (the free end side). Further, the receiving device 21 is located on the front side of the swinging base end portion 22t. With this configuration, the possibility of contact between the receiving device 21 and the lateral conveying section 9B is avoided.

The state in which the arm portion 22A swings upward as shown by the two-dot chain line in FIGS. 6 and 7 corresponds to the "second state" of the present invention. Further, the state in which the arm portion 22A swings downward as shown by the solid line in FIG. 7 corresponds to the "first state" of the present invention. The positioning unit 20 is configured to be able to change its state between a first state and a second state in which the receiving device 21 is located at a higher position than the first state. The arm portion 22A manifests the second state of the positioning unit 20 by swinging upward compared to the first state.

When the positioning unit 20 is in the second state, compared to the height of the receiving device 21 when the positioning unit 20 is in the first state, the receiving device 21 is less susceptible to the effects of multipath etc. The positioning accuracy of the receiving device 21 becomes better. Furthermore, when the positioning unit 20 is in the first state, interference between the ceiling and the positioning unit 20 is avoided even if the ceiling of the storage where the combine harvester is stored is low.

As shown in FIG. 3, a cylindrical small diameter portion 25a is formed at the front portion of the swing bearing portion 25, and a cylindrical large diameter portion 25b is formed at the rear portion of the swing bearing portion 25. The inner diameter of the small diameter portion 25a is approximately the same as or slightly larger than the outer diameter of the swinging base end 22t of the arm portion 22A. Therefore, the swinging base end portion 22t of the arm portion 22A can be inserted through the small diameter portion 25a. Further, a stepped portion 25c is formed between the small diameter portion 25a and the large diameter portion 25b.

The swinging base end 22t of the arm portion 22A is inserted into the large diameter portion 25b, and the coil spring 26 and the bushing portion 27 are fitted onto the swinging base end 22t. One end of the coil spring 26 contacts the stepped portion 25c, and the other end of the coil spring 26 contacts the bushing portion 27. The outer diameter of the bushing portion 27 is approximately the same as the inner diameter of the large diameter portion 25b. Therefore, the bushing portion 27 can hold the arm portion 22A such that the swinging base end portion 22t of the arm portion 22A extends along the swinging axis X1.

A threaded groove 22s is formed at the rear end of the swing base end 22t of the arm portion 22A, and a nut Nu is screwed into this threaded groove 22s. Further, a washer 28 is interposed between the bush portion 27 and the nut Nu. In this state, the nut Nu is fastened to the swing base end 22t of the arm portion 22A.

A hole perpendicular to the swing axis X1 is bored in the swing base end 22t of the arm portion 22A, and a lock pin 29 is inserted into this hole. The lock pin 29 comes into contact with the front end of the swing bearing 25 and restricts the rearward sliding movement of the arm 22A. With the lock pin 29 in contact with the front end of the swing bearing 25, the coil spring 26 is compressed. Therefore, the lock pin 29 is urged to come into contact with the front end portion of the swing bearing portion 25. Although details will be described later, a vertical groove 25v and a horizontal groove 25h are formed at the front end of the swing bearing 25, and the lock pin 29 can be engaged with each of the vertical groove 25v and the horizontal groove 25h. . The vertical groove portion 25v and the horizontal groove portion 25h are formed to intersect orthogonally or substantially orthogonally to each other.

In this way, the arm portion 22A is supported by the cabin 10 so as to be able to vertically swing integrally with the receiving device 21 around the swing axis X1 along the longitudinal direction of the aircraft body.

In this embodiment, as shown in FIGS. 3, 4, 6, and 7, a first restriction section 30A and a second restriction section 30B are provided. The first restricting portion 30A and the second restricting portion 30B extend from the base end support portion 24 in the lateral direction of the machine body. The first regulating part 30A extends from the upper end of the base support part 24 to the side opposite to the side where the cabin 10 is located, and the second regulating part 30B extends from the upper end of the base end support part 24 to the side where the cabin 10 is located. and is extended to the opposite side. In other words, the first restricting portion 30A and the second restricting portion 30B extend from the cabin 10 in the lateral direction of the aircraft body.

The first restriction portion 30A is located below the swing bearing portion 25, and the second restriction portion 30B is located above the swing bearing portion 25. In other words, the first restricting portion 30A is located below the swing axis X1, and the second restricting portion 30B is located above the swing axis X1. Therefore, when the positioning unit 20 is in the first state, the first regulating section 30A contacts the arm section 22A from below to regulate the downward swinging of the arm section 22A. Further, when the positioning unit 20 is in the second state, the second regulating section 30B contacts the arm section 22A from above to regulate the upward swinging of the arm section 22A.

The swing bearing portion 25 is provided between the first restricting portion 30A and the second restricting portion 30B so as to be biased toward the side where the second restricting portion 30B is located. The first restricting portion 30A extends further away from the cabin 10 by a distance L1 than the second restricting portion 30B (FIGS. 6 and 7). Since the swing bearing portion 25 is configured to be biased toward the side where the second restriction portion 30B is located, if the lengths of the first restriction portion 30A and the second restriction portion 30B are the same in the transverse direction of the fuselage, The amount of upward swinging of the arm portion 22A is more restricted than the amount of downward swinging of the arm portion 22A. According to this embodiment, when the positioning unit 20 is in the second state, it is possible to arrange the plate part 22B and the receiving device 21 at the highest possible position.

As shown in FIG. 1, when the positioning unit 20 is in the first state, the entire positioning unit 20 is located at a lower position than the upper end of the horizontal conveyance section 9B in the stored state. When the positioning unit 20 is in the first state, the receiving device 21 overlaps with the horizontal conveyance section 9B in the stored state when viewed from the side of the body. Further, as shown in FIGS. 2 and 4, when the positioning unit 20 is in the first state, the receiving device 21 is located in the space between the cabin 10 and the lateral conveyance section 9B.

As shown in FIG. 1, when the positioning unit 20 is in the second state, the receiving device 21 of the positioning unit 20 is located at a higher position than the upper end of the horizontal conveyance section 9B in the stored state. As shown in FIGS. 1, 3, 4, and 6, when the positioning unit 20 is in the second state, the receiving device 21 overlaps with the roof 10R of the cabin 10 when viewed from the side of the aircraft. More specifically, in the second state, the positioning unit 20 is in a state in which the upper end of the receiving device 21 is higher than the roof 10R, and the support member 22 does not protrude above the upper end of the roof 10R. It is configured to be. Further, as shown in FIG. 2, when the positioning unit 20 is in the second state, the receiving device 21 is located between the cabin 10 and the horizontal conveyance section 9B. That is, as shown in FIG. 2, regardless of the state of the positioning unit 20, the receiving device 21 is always located between the cabin 10 and the lateral transport section 9B when viewed from above.

The end P1 of the support member 22 opposite to the side where the cabin 10 is located when the positioning unit 20 is in the first state, and the end P1 of the support member 22 where the cabin 10 is located when the positioning unit 20 is in the second state. The opposite end P2 is shown in FIG. The end P1 is located on the side where the cabin 10 is located by a distance L2 from the end P2.

That is, in a plane view of the aircraft, the end P1 of the support member 22 opposite to the cabin 10 when the positioning unit 20 is in the first state is the end P1 of the support member 22 when the positioning unit 20 is in the second state. It is located at a position closer to the cabin 10 by a distance L2 than the end P2 on the opposite side to the cabin 10. With this configuration, compared to a configuration in which the end portion P1 and the end portion P2 are at the same position in the left-right direction of the aircraft, or the end portion P1 is located on the side opposite to the side where the cabin 10 is located than the end portion P2. Therefore, it becomes possible to store the receiving device 21 as close to the side where the cabin 10 is located as possible. Thereby, the possibility that the receiving device 21 and the horizontal conveyance section 9B of the grain discharge device 9 will come into contact with each other is reduced.

In this embodiment, the arm portion 22A is configured to be swingable within a range of 90 degrees. That is, the angle difference θ between the angle of the arm portion 22A when the first restriction portion 30A and the arm portion 22A abut and the angle of the arm portion 22A when the second restriction portion 30B and the arm portion 22A abut each other. is 90 degrees.

When the positioning unit 20 is in the first state, the first restriction part 30A and the arm part 22A are in contact with each other, and the lock pin 29 is fitted into the vertical groove part 25v at the front end of the swing bearing part 25. Therefore, the angle of the arm portion 22A when the positioning unit 20 is in the first state is firmly held by the first restriction portion 30A and the vertical groove portion 25v.

When the arm section 22A swings upward from the first state of the positioning unit 20, the arm section 22A separates from the first regulating section 30A, and the lock pin 29 is moved from the coil spring as the arm section 22A swings. It comes out of the vertical groove portion 25v against the urging force of 26. Then, when the arm section 22A swings upward by 90 degrees from the first state of the positioning unit 20, the second regulating section 30B and the arm section 22A come into contact with each other, and the lock pin 29 It fits into the horizontal groove 25h at the front end.

Further, in this embodiment, a holding section 23 is provided. The holding part 23 is for holding the angle of the arm part 22A when the positioning unit 20 is in the second state. The holding portion 23 is supported by the front end portion of the base end support portion 24 so as to be swingable up and down about an axis X2 along the longitudinal direction of the body. In other words, the holding part 23 is supported by the cabin 10 via the base end support part 24 so as to be swingable around the axis X2 along the longitudinal direction of the aircraft body. Note that the axis X2 is located above the swing axis X1. A torsion spring 23s is wound around the holding part 23, and the holding part 23 is urged to swing downward.

The holding portion 23 has a lower extending portion 23D extending downward from the axis X2, and a left extending portion 23R extending toward the left side of the body from the axis X2. That is, the holding portion 23 is formed in an L-shape when viewed in the front-rear direction. An inclined cam portion 23b and a hook recessed portion 23a are formed in the left extending portion 23R. The inclined cam portion 23b and the hooked recessed portion 23a are adjacent to each other. The inclined cam portion 23b is located on the left side of the hook recessed portion 23a (on the opposite side to the side where the shaft center X2 is located). The inclined cam portion 23b is inclined so that the free end side is positioned upward. Therefore, the boundary between the inclined cam portion 23b and the hook recessed portion 23a projects downward.

An engaging portion 22d is provided at the swinging proximal end portion of the arm portion 22A, and the engaging portion 22d is welded and fixed to the arm portion 22A. When the arm portion 22A swings upward, the engaging portion 22d and the inclined cam portion 23b come into contact. Then, when the arm portion 22A swings upward and the pressing force of the engaging portion 22d acts on the holding portion 23, the holding portion 23 swings clockwise in the drawings of FIGS. 6 and 7. Here, the arm portion 22A swings around the swing axis X1, and the holding portion 23 swings around the swing axis X2. The swing axis X1 is located below the axis X2. As a result, the engaging portion 22d is guided to the hook recess 23a while sliding the edge portion of the inclined cam portion 23b toward the side where the hook recess 23a is located. At this time, the left extending portion 23R is in a state of extending upward from the horizontal direction, and this state is shown by a broken line in FIG.

The more the arm portion 22A swings upward, the more the engaging portion 22d slides toward the side where the hook recessed portion 23a is located. When the engaging portion 22d slides over the boundary between the inclined cam portion 23b and the hook recess 23a and into the hook recess 23a, the holding portion 23 moves as shown in FIG. It swings counterclockwise on the paper in FIG. The engaging portion 22d then enters the hook recessed portion 23a. At this time, the positioning unit 20 is in the second state. Further, at this time, the left extending portion 23R is in a state of extending along the horizontal direction. By engaging the engaging portion 22d and the hook recessed portion 23a, the downward swinging of the arm portion 22A is restricted by the holding portion 23, and the arm portion 22A becomes unable to swing downward. The state of the holding portion 23 at this time is referred to as a "locked state." The holding portion 23 indicated by a solid line in FIG. 6 indicates the locked state of the holding portion 23.

Moreover, when the holding part 23 swings to a higher position than when it is in the locked state, the engaging part 22d and the hook recessed part 23a do not engage with each other, so that the arm part 22A can swing downward. The state of the holding portion 23 at this time is referred to as the "unlocked state". In this way, the holding unit 23 is configured to be able to change the state between a locked state in which the positioning unit 20 is held in the second state and an unlocked state in which the positioning unit 20 is not held in the second state. There is. The holding part 23 is configured to swing to a higher position than in the locked state when the arm part 22A swings upward and the pressing force of the engaging part 22d acts on the holding part 23, and When the arm part 22A swings upward and the positioning unit 20 changes to the second state, it swings downward and engages with the engaging part 22d, thereby changing the state to the locked state. .

When the positioning unit 20 is in the second state, the downward swinging of the arm part 22A is regulated by the holding part 23, and the upward swinging of the arm part 22A is regulated by the second regulating part 30B. Further, the lock pin 29 is fitted into a lateral groove 25h at the front end of the swing bearing 25. As a result, the angle of the arm portion 22A when the positioning unit 20 is in the second state is firmly held by the second regulating portion 30B, the horizontal groove portion 25h, and the holding portion 23.

When changing the state of the positioning unit 20 from the second state to the first state, for example, the operator swings the downwardly extending portion 23D of the holding portion 23 clockwise in the drawings in FIGS. 6 and 7. At this time, the entire holding part 23 swings clockwise in the drawings in FIGS. 6 and 7, and the engagement state between the engaging part 22d and the hook recessed part 23a is released. The operator then swings the arm portion 22A downward to bring the arm portion 22A into contact with the first restriction portion 30A. Thereby, the operator can change the state of the positioning unit 20 from the second state to the first state.

When the positioning unit 20 is in the first state, the free end portion of the lower extending portion 23D abuts the base end support portion 24. Note that since the holding portion 23 is supported by the front end portion of the base end support portion 24, the free end portion of the lower extending portion 23D is bent rearward. Further, the free end portion of the lower extending portion 23D is located above the first restricting portion 30A. Therefore, the free end portion of the lower extending portion 23D is configured to be able to firmly abut against the base end support portion 24. The configuration in which the free end of the lower extending portion 23D abuts the base end support portion 24 restricts the downward swinging of the left extending portion 23R. As a result, when the arm portion 22A swings upward from the first state of the positioning unit 20, the engaging portion 22d always comes into contact with the inclined cam portion 23b first.

[Another embodiment]
The present invention is not limited to the configurations illustrated in the above-described embodiments, and other representative embodiments of the present invention will be illustrated below.

(1) In the above embodiment, when the positioning unit 20 is in the second state, the upper end of the receiving device 21 is higher than the roof 10R. Not limited to this embodiment, for example, when the positioning unit 20 is in the second state, the upper end of the receiving device 21 may be lower than the roof 10R, or the upper end of the receiving device 21 may be in the lateral conveyance section. The configuration may be lower than the upper edge of 9B. That is, when the positioning unit 20 is in the first state, the entire positioning unit 20 is located at a position lower than the upper end of the horizontal conveyance section 9B in the stored state, and when the positioning unit 20 is in the second state, one of the positioning units 20 is At least the receiving device 21 may be configured to be located at a higher position than in the first state. More specifically, it is sufficient that the roof 10R, the horizontal conveyance section 9B, etc. do not exist within an altitude angle range of 15 degrees from the receiving device 21 with respect to the horizontal direction.

(2) In the embodiment described above based on FIG. 7, the angle of the arm portion 22A when the first restriction portion 30A and the arm portion 22A contact, and the angle when the second restriction portion 30B and the arm portion 22A contact each other. The angle difference θ between the angle of the arm portion 22A and the arm portion 22A is 90 degrees. The present invention is not limited to this embodiment, and for example, the angular difference θ may be approximately 90 degrees (for example, 89 to 91 degrees).

(3) In the above-described embodiment, when the positioning unit 20 is in the first state, the receiving device 21 overlaps with the horizontal conveyance section 9B in the stored state when viewed from the side of the body. Without being limited to this embodiment, for example, when the positioning unit 20 is in the first state, the receiving device 21 may be located below the lateral conveyance section 9B in the stored state.

(4) In the above-described embodiment, the support member 22 is supported on the left side of the cabin 10 in a state where it can swing around the swing axis X1 in the front-rear direction. Without being limited to this embodiment, for example, the support member 22 may be supported at the front side of the cabin 10 in a state in which it can swing around a left-right axis. Alternatively, the support member 22 may not be configured to swing around the swing axis X1, but may be configured to slide vertically, for example.

(5) In the embodiment described above, the first restriction portion 30A extends further away from the cabin 10 than the second restriction portion 30B. Without being limited to this embodiment, for example, the first regulating section 30A and the second regulating section 30B may extend the same length from the cabin 10 in the lateral direction of the aircraft, or the second regulating section 30B may extend from the first regulating section 30B. It may extend further away from the cabin 10 than the regulating portion 30A.

(6) For example, the arm portion 22A is swung by a tension spring to the side where the first restriction portion 30A is located and the side where the second restriction portion 30B is located, with a predetermined dead center as the boundary. It may also be configured to be biased in this manner. With this configuration, the positioning unit 20 may be configured to be held in position in each of the first state and the second state.

(7) In the above-described embodiment, when the positioning unit 20 is in the first state, the entire positioning unit 20 is located at a position lower than the upper end of the horizontal conveyance section 9B in the stored state. When the positioning unit 20 is in the first state, the positioning unit 20 may be configured such that substantially the entire positioning unit 20 is located at a lower position than the upper end of the horizontal conveyance section 9B in the stored state. That is, it is also possible to have a configuration in which the upper part of the positioning unit 20 is located at a higher position than the upper end of the horizontal conveyance section 9B in the stored state, to the extent that storage of the combine is not hindered.

(8) In the above-described embodiment, a self-removal type combine harvester is illustrated, but a full culm input type combine harvester (so-called ordinary type combine harvester) may be used.

Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments as long as no contradiction occurs. Further, the embodiments disclosed in this specification are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the purpose of the present invention.

The present invention is applicable to combines.

5: Operating section 6: Threshing device 8: Grain tank 9: Grain discharge device (transport device)
9A: Vertical conveyance section 9B: Horizontal conveyance section 9C: Discharge port 10: Cabin 10R: Roof 20: Positioning unit 21: Receiving device 22: Support member 22A: Arm section 22d: Engagement section 23: Holding section 30A: First regulation Part 30B: Second regulating part P1: End of the support member when the positioning unit is in the first state P2: End of the support member when the positioning unit is in the second state X1: Swing axis of the arm (front and back) axis)
X2: Axis center of holding part θ: Angle difference

Claims (12)

The driving department and
a cabin that covers the driving section;
A positioning unit comprising: a receiving device that receives a signal from a satellite; a support member that is supported in the cabin so that its position can be changed and supports the receiving device;
The positioning unit is configured to be able to change the state between a first state and a second state in which the receiving device is located at a higher position than the first state,
In plan view of the aircraft, the end of the support member opposite to the cabin when the positioning unit is in the first state is the end of the support member opposite to the cabin when the positioning unit is in the second state. A combine harvester located at a position closer to the cabin than the end opposite to the cabin. The combine harvester according to claim 1, wherein the support member is supported by a side portion of the cabin so as to be swingable about a longitudinal axis. The combine harvester according to claim 1 , wherein when the positioning unit is in the second state, the receiving device overlaps the roof of the cabin in a side view of the aircraft. The positioning unit is configured such that, in the second state, the upper end of the receiving device is higher than the roof, and the support member does not protrude above the upper end of the roof. 4. The combine harvester according to claim 3, wherein: A threshing device that threshes the harvested crops;
a grain tank for storing threshed grain;
a vertical conveying section connected to the rear lower part of the grain tank and vertically conveying the grains stored in the grain tank; and a vertical conveying section connected to the upper end of the vertical conveying section and having a discharge port; A conveyance device having a horizontal conveyance section that horizontally conveys the grains from the conveyance section and discharges them from the discharge port,
The lateral conveying section is configured to be able to move up and down and turn left and right, and is capable of projecting to the outside of the machine body and discharging grains from a stored state stored in a home position spanning the center part of the machine body in plan view. ,
When the positioning unit is in the first state, the entire positioning unit is located at a lower position than the upper end of the lateral conveyance section in the storage state, and when in the second state, the positioning unit is The combine harvester according to any one of claims 1 to 4, wherein at least the receiving device is configured to be located at a higher position than in the first state. 6. The combine harvester according to claim 5, wherein when the positioning unit is in the first state, the receiving device overlaps with the lateral conveying section in the stored state when viewed from a side of the body. 7. The combine harvester according to claim 5, wherein the receiving device is always located between the cabin and the lateral conveyance section when viewed from above, regardless of the state of the positioning unit. The combine harvester according to any one of claims 5 to 7, wherein when the positioning unit is in the first state, the receiving device is located in a space between the cabin and the lateral conveyance section. an arm part provided on the support member and supported by the cabin so as to be able to vertically swing integrally with the receiving device around a swing axis along the longitudinal direction of the aircraft;
When the positioning unit is in the first state, a first regulating section contacts the arm section from below to regulate downward swinging of the arm section;
9. The positioning unit according to claim 1, further comprising: a second regulating section that contacts the arm section from above to regulate upward swinging of the arm section when the positioning unit is in the second state. The combine harvester described in any one of the items. The first regulating part is located below the swing axis, and the second regulating part is located above the swing axis,
The first restriction part and the second restriction part extend from the cabin in a lateral direction of the aircraft,
The combine harvester according to claim 9, wherein the first restriction portion extends further away from the cabin than the second restriction portion. The angle difference between the angle of the arm portion when the first restriction portion and the arm portion abut and the angle of the arm portion when the second restriction portion and the arm portion abut are 90 degrees. The combine harvester according to claim 9 or 10, wherein the angle is approximately 90 degrees. a locked state in which the positioning unit is held in the second state, and a lock in which the positioning unit is not held in the second state; A holding part that can change the state to a released state is provided,
The arm portion is provided with an engaging portion that can be engaged with the holding portion,
The holding part is configured to swing to a higher position than in the locked state when the arm part swings upward and a pressing force of the engaging part acts on the holding part, and When the arm part swings upward to change the state of the positioning unit to the second state, the arm part swings downward and engages with the engagement part, thereby changing the state to the locked state. The combine harvester according to any one of claims 9 to 11.

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