Combine

Abstract

To provide a combine capable of achieving both of securement of positioning accuracy in harvesting work and space saving in preservation.SOLUTION: A combine comprises: a thresher 6; a grain tank 8; a transport unit 9 having a lateral transport part 9B which laterally sends grains from a vertical transport part 9A for vertically transporting grains stored in the grain tank 8, and discharging the grains from a discharge hole 9C; and a positioning unit 20. The positioning unit 20 has: a reception unit 21 for receiving a signal from a satellite; and a frame member 22 for supporting the reception unit. The positioning unit 20 is configured so as to change a state between a first state where a whole body of the positioning unit 20 is located at a position lower than an upper end part of the lateral transport part 9B in a storage state, and a second state where at least the reception unit 21 out of the positioning unit 20 is located at a position higher than the position in the first state.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] For example, the combine disclosed in Patent Document 1 is equipped with a receiving device (referred to in the document as a "GPS antenna unit") that is supported by frame members (referred to in the document as a "portal-shaped member" and a "support member") and receives signals from artificial satellites. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-103055 Summary of the Invention [Problem to be solved by the invention]

[0004] When a receiver receives signals from a satellite, it is desirable to position the receiver as high as possible to improve positioning accuracy. Combine harvesters are stored in storage facilities such as barns during times other than harvest season. Storage facilities may have low ceilings, which could potentially interfere with the receiver. For this reason, when an agricultural business (e.g., a farmer) introduces a new combine harvester equipped with a positioning unit, the new combine harvester may not be able to be stored in the same storage facility as a conventional combine harvester (hereinafter simply referred to as a "conventional combine harvester") that does not have a receiver. To avoid this inconvenience, it is possible to limit the height of the receiver to approximately the overall height of the conventional combine harvester. However, if the height of the receiver is low, the receiver may be more susceptible to problems with positioning accuracy during harvesting, such as being more susceptible to multipath interference.

[0005] The present invention provides a combine harvester that ensures positioning accuracy during harvesting work and saves space during storage. [Means for solving the problem]

[0006] The combine harvester of the present invention is equipped with a threshing device that threshes harvested crops, a grain tank that stores the threshed grains, a conveying device having a vertical conveying section connected to the rear lower part of the grain tank and vertically conveying the grain stored in the grain tank, and a horizontal conveying section connected to the upper end of the vertical conveying section and having a discharge outlet, which feeds the grain from the vertical conveying section horizontally and discharges it from the discharge outlet, and a positioning unit having a receiving device that receives signals from an artificial satellite and a frame member that supports the receiving device, wherein the horizontal conveying section is configured to be able to move up and down and swivel left and right, and is capable of extending outside the machine body from a stored state in which it is stored in a home position that spans the center of the machine body in a plan view and discharging grain, and the positioning unit is configured to be able to change its state between a first state in which the entire positioning unit is located at a position lower than the upper end of the horizontal conveying section in the stored state, and a second state in which at least the receiving device of the positioning unit is located at a position higher than in the first state. The combine harvester of the present invention is equipped with a traveling device, a cutting unit that cuts crops in a field, a driving unit located behind the cutting unit, a receiving device that receives signals from a satellite, and a frame member that supports the receiving device, and is characterized in that the receiving device is located forward of the driving unit. In the present invention, it is preferable that the receiving device overlaps with the reaping unit in a plan view of the machine body. In the present invention, it is preferable that a front panel is provided in front of the driver's section, and the receiving device is located forward of the front panel. In the present invention, it is preferable that the front panel is provided with a meter panel, and the receiving device is located forward of the meter panel. In the present invention, it is preferable that the front panel is provided with an operating tool for steering the traveling device, and the receiving device is located forward of the operating tool. In the present invention, it is preferable that a seat is provided behind the driver's section, and the receiving device is positioned forward of a front end of the seat. In the present invention, the frame member has a support base supported by the driver's section and a forward-inclined frame that is inclined upward toward the front above the support base, and it is preferable that the receiving device is located forward of the forward-inclined frame. In the present invention, it is preferable that a front end of the forward tilt frame is located forward of the driver's section, and the receiving device is located forward of the forward tilt frame. In the present invention, it is preferable that a stay portion for fixing the receiving device is provided, a lower portion of the stay portion is connected to an upper portion of the forward-inclined frame, an end portion of the stay portion opposite the lower portion is extended forward of the forward-inclined frame, and the receiving device is fixed to the end portion of the stay portion opposite the lower portion. In the present invention, it is preferable that the stay portion is configured to be changeable between a first state in which the receiving device is positioned below an upper end portion of the forward-inclined frame and a second state in which the receiving device is positioned above the upper end portion of the forward-inclined frame.

[0007] According to the present invention, the positioning unit is configured to be changeable between a first state and a second state. When the positioning unit is in the first state, the entire positioning unit is positioned lower than the upper end of the lateral conveyor. Because the lateral conveyor of the conveying device is positioned relatively high within the combine, when the positioning unit is in the first state, the overall height of the combine can be easily kept at the same level as that of a conventional combine. This prevents interference between the ceiling and the positioning unit, even if the ceiling of the storage shed where the combine is stored is low, making it possible to store the combine of the present invention in the same storage shed as a conventional combine. Furthermore, when the positioning unit is in the second state, the receiving device is positioned higher than in the first state. Therefore, compared to when the positioning unit is in the first state, the receiving device is less susceptible to the effects of multipath and the like, improving the positioning accuracy of the receiving device during harvesting. This achieves a combine that ensures positioning accuracy during harvesting while saving space during storage.

[0008] In the present invention, when the positioning unit is in the second state, it is preferable that at least the receiving device of the positioning unit is located at a position higher than an upper end of the horizontal conveyor in the stored state.

[0009] This configuration can suppress the adverse effects of the horizontal carrier on the reception quality of the receiving device, such as the adverse effects of so-called multipath, in which a signal from a satellite is reflected by the horizontal carrier and reaches the receiving device.

[0010] In the present invention, it is preferable that a driving section is provided, and when the positioning unit is in the second state, the receiving device is located in front of the driving section.

[0011] This configuration can suppress adverse effects of the driving unit on the reception state of the receiving device, such as the adverse effects of so-called multipath, in which signals from a satellite are reflected by the driving unit and reach the receiving device.

[0012] In the present invention, a cutting unit for cutting crops in a field is provided at the front of the body, and when the positioning unit is in the second state, it is preferable that the receiving device is positioned at the center of the left and right width of the cutting unit, overlapping with the cutting unit in a planar view.

[0013] With this configuration, the receiving device can accurately measure the position based on the center of the reaping unit. Furthermore, when calculating the position of the combine harvester based on the received satellite signal, the calculation can be performed with high accuracy.

[0014] In the present invention, it is preferable that the frame member is provided with a gate-shaped member having a plurality of vertical frame sections arranged in a row in the fore-and-aft direction of the aircraft, and front-and-aft frame sections connected to the upper ends of each of the plurality of vertical frame sections and extending along the fore-and-aft direction of the aircraft.

[0015] According to this configuration, the frame member is provided with a portal member, and the receiving device is supported by the portal member. The portal member includes a plurality of vertical frame portions and front and rear frame portions connected to the upper ends of each of the vertical frame portions. This allows the receiving device to be supported more firmly and less susceptible to the effects of vibrations, etc., compared to a configuration in which the receiving device is supported by a single vertical frame portion, for example.

[0016] In the present invention, it is preferable that the driving unit is provided in a state where it is biased to one of the left and right sides with respect to the center of the machine body, and the gate-shaped member is supported on the other left and right end of the driving unit. Alternatively, it is preferable that the driving unit is provided in a state where it is biased to one of the left and right sides with respect to the center of the machine body, and the gate-shaped member is provided adjacent to the other left and right side of the driving unit.

[0017] With these configurations, the gate-shaped member is firmly supported in the central left and right regions of the body, making it easier to simplify the support structure for the gate-shaped member compared to configurations in which the gate-shaped member is located in one of the left and right regions of the body.

[0018] In the present invention, it is preferable that an operating unit is provided, and that the frame member is provided with a horizontal frame portion that is connected to the gate-shaped member and the end of the operating unit in the left-right direction of the vehicle body and extends along the left-right direction of the vehicle body.

[0019] In this configuration, the horizontal frame connects the portal member to the end of the driving section. With this configuration, even if the portal member is subjected to a vibration force in the left-right direction of the machine body, this left-right force is absorbed by the horizontal frame. As a result, the portal member is less likely to vibrate in the left-right direction of the machine body than in a configuration without the horizontal frame.

[0020] In the present invention, the driving section is provided with a seat on which the driver sits and a front panel located in front of the seat and having operating tools for driving operations, and the horizontal frame section is connected to the lower part of the gate-shaped member and the outer lateral end of the front panel of the vehicle body, and it is preferable that the horizontal frame section is located forward of the operating tools.

[0021] With this configuration, the horizontal frame section connected to the lower part of the gate-shaped member is positioned relatively low relative to the driver's section. This prevents the horizontal frame section from blocking the driver's view while seated in the seat, allowing the driver to easily see what is ahead. In addition, because the horizontal frame section is positioned forward of the operating device, it can also function as a handrail for the driver.

[0022] In the present invention, it is preferable that the horizontal frame portion is located below an upper end portion of the operating tool.

[0023] With this configuration, the horizontal frame portion is positioned lower than the upper end of the operating tool, so that the driver seated in the seat can clearly see ahead without the horizontal frame portion blocking the forward field of view. Also, with this configuration, when the driver grips the upper end of the operating tool to operate it, the risk of the driver's hand hitting the horizontal frame portion is reduced, making it less likely that the driver will feel bothered by the horizontal frame portion.

[0024] In the present invention, it is preferable that the frame member is provided with a stay portion that is supported by the gate-shaped member and connects and supports the receiving device, and that the lateral conveying portion, when in the stored state, extends forward and backward and extends further forward of the body than the positioning unit, and that the stay portion is configured to be swingable around a left-right axis that runs along the left-right direction of the body.

[0025] When the lateral conveying unit, which can pivot left and right, is stored in its home position, the lateral conveying unit often extends in the front-to-rear direction. With this configuration, the stay unit swings back and forth around the left-to-right axis. This makes it less likely that the stay unit and the receiving device will come into contact with the lateral conveying unit. Therefore, when the positioning unit is changed between the first state and the second state, interference between the positioning unit and the lateral conveying unit is suppressed.

[0026] In the present invention, it is preferable that when the positioning unit is in the second state, the stay portion stands higher than the front and rear frame portions, and the positioning unit is configured to be able to change its state from the second state to the first state by the stay portion swinging forward in a forward tilting direction.

[0027] In many cases, components of the combine are located behind the stay portion, but more space is likely to be secured in front of the stay portion than behind the stay portion. With this configuration, the positioning unit can be changed between the first state and the second state without interfering with components of the combine.

[0028] In the present invention, the gate-shaped member is provided with a connecting portion that connects the foremost vertical frame portion among the multiple vertical frame portions to the front and rear frame portions, and the connecting portion is provided with a first support portion that is connected to the foremost vertical frame portion, and a second support portion that is located rearward and above the first support portion and is connected to the front and rear frame portions, and when the positioning unit is in the second state, the first support portion abuts against the stay portion to restrict rearward swinging of the stay portion, and when the positioning unit is in the first state, the second support portion abuts against the stay portion to restrict forward swinging of the stay portion in the direction of falling forward.

[0029] With this configuration, the first state and the second state of the positioning unit are stably maintained.

[0030] In the present invention, it is preferable that the front and rear frame sections overlap the lateral transport section in the stored state in a side view of the machine body.

[0031] With this configuration, the front and rear frame portions are disposed at a relatively high position, and therefore the receiving device, which is positioned at a relatively high position when the positioning unit is in the second state, can be stably supported. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 1 is an overall side view of a combine harvester. [Figure 2] FIG. 1 is an overall plan view of a combine harvester. [Figure 3] FIG. 2 is a right side view of the aircraft showing the driving section and the positioning unit. [Figure 4] FIG. 2 is a front view of the aircraft showing the driving section and the positioning unit. [Figure 5] FIG. 10 is a left side view of the fuselage showing the swing base end of the stay portion in the positioning unit. [Figure 6] 6 is a diagram showing the swing base end of the stay portion of the positioning unit, taken along line VI-VI in FIG. 5. [Figure 7] 7 is a diagram showing the swing base end of the stay portion of the positioning unit, taken along line VII-VII in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0033] The combine harvester of this embodiment will be described below using a head-feeding combine harvester as an example.

[0034] FIG. 1 is a left side view of a combine harvester, and FIG. 2 is a plan view of the combine harvester. For ease of understanding, in this embodiment, unless otherwise specified, "front" (the direction of arrow "F" in FIG. 1 ) refers to the front in the longitudinal direction (traveling direction) of the machine body, and "rear" (the direction of arrow "B" in FIG. 1 ) refers to the rear in the longitudinal direction (traveling direction) of the machine body. Furthermore, "up" (the direction of arrow "U" in FIG. 1 ) and "down" (the direction of arrow "D" in FIG. 1 ) refer to a positional relationship in the vertical direction (a direction perpendicular to a horizontal plane) and indicate a relationship at ground level. Furthermore, the left-right direction or lateral direction refers to a transverse direction (width direction) of the machine body perpendicular to the longitudinal direction of the machine body. That is, "left" (the direction of arrow "L" in FIG. 2 ) and "right" (the direction of arrow "R" in FIG. 2 ) refer to the leftward and rightward directions of the machine body, respectively. This also applies to FIG. 3 and subsequent figures.

[0035] [Overall information about combine harvesters] As shown in Figure 1, the combine harvester's traveling body 1 has a body frame 2, which is made up of multiple connected steel materials such as square pipes. A pair of left and right crawler-type traveling devices 3 are mounted on the lower part of the body frame 2. A driving section 5 is provided on the right side of the front of the traveling body 1. An engine E is located below the driving section 5. The engine E is covered by an engine bonnet 10. The driving section 5 is located above the engine bonnet 10. The driving section 5 is not covered by a cabin and is open to the outside.

[0036] A reaping unit 4 is provided at the front of the traveling body 1 and is capable of moving up and down. The reaping unit 4 raises and reaps multiple rows of planted rice or wheat stalks (crops) in front of the traveling body 1, and transports the reaped stalks 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 machine body frame 2. The threshing device 6 is located behind the reaping unit 4, and the grain tank 8 is located behind the driver's unit 5. A feed chain 7 is provided on the left side of the threshing device 6, and the feed chain 7 clamps and transports the reaped stalks reaped by the reaping unit 4 toward the rear. The threshing device 6 threshes the reaped stalks that have been fed into it, and then a sorting process is performed to separate the resulting grains from dust. The grain tank 8 stores the threshed grains transported from the threshing device 6. A grain discharge device 9 that removes grains from the grain tank 8 is connected to the rear of the grain tank 8. The grain discharge device 9 corresponds to the "conveyor device" of the present invention.

[0037] The grain discharge device 9 is equipped with a vertical conveying section 9A and a horizontal conveying section 9B. The vertical conveying section 9A is connected to the rear lower section of the grain tank 8 and vertically conveys the grains stored in the grain tank 8. The horizontal conveying section 9B is connected to the upper end of the vertical conveying section 9A and feeds the grains from the vertical conveying section 9A horizontally. A discharge opening 9C is provided at the downstream end in the conveying direction of the horizontal conveying section 9B. The horizontal conveying section 9B conveys the grains from the vertical conveying section 9A to the discharge opening 9C and discharges them from the machine outside through the discharge opening 9C.

[0038] The horizontal conveying section 9B is configured to be able to move up and down and to rotate left and right. As shown in Figures 1 and 2, when the grain discharge device 9 is not in use, the horizontal conveying section 9B is positioned above the threshing device 6 and the grain tank 8, and extends forward and backward while spanning the center of the machine body in a plan view. The state of the horizontal conveying section 9B in this state is referred to as the "storage state." The position of the horizontal conveying section 9B in this state is referred to as the "home position."

[0039] When the grain discharge device 9 is in use, the lateral conveying section 9B can extend from its stored state in the home position to the outside of the machine body to discharge grain. Here, "outside of the machine body" means to the left of the left side of the threshing device 6 (lateral outside of the machine body), to the right of the right side of the grain tank 8 (lateral outside of the machine body), and behind the rear ends of the threshing device 6 and the grain tank 8. In other words, when the grain discharge device 9 is in use, the lateral conveying section 9B extends to the left or right side or rearward from the traveling machine body 1 to discharge grain stored in the grain tank 8.

[0040] 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 GNSS (Global Navigation Satellite System, such as GPS, GLONASS, Galileo, QZSS, and BeiDou) signals from artificial satellites (not shown) to acquire the vehicle's position. To complement the satellite navigation performed by the positioning unit 20, the combine harvester is equipped with an inertial navigation unit 19 incorporating a gyro acceleration sensor and a magnetic direction sensor. As will be described later, the inertial navigation unit 19 is located in a different location from the positioning unit 20 in the combine harvester.

[0041] [Operation department] The driver's section 5 is provided in a state where it is biased to the right side of the aircraft body with respect to the center of the aircraft body. As shown in Figures 1 to 4, the driver's section 5 is provided with 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. The seat 11 is provided in the central region of the driver's section 5 and is supported on the upper surface of the engine bonnet 10. The driver sits on the seat 11. A floor section 15 is provided between the front panel 12 and the seat 11 in the fore-and-aft direction. An access step 14 is provided to the right of the seat 11 and the floor section 15. The side panel 13 is provided on the side of the driver's section 5 opposite to the side where the access step 14 is located.

[0042] The front panel 12 is provided with a steering lever 16 and a meter panel 17. The steering lever 16 is an operating tool for driving, and is provided at the right end of the front panel 12, located in front of the seat 11. The meter panel 17 is provided in the center of the front panel 12 in the left-right direction. A passenger sitting in the driver's 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 RPM, and remaining fuel. Furthermore, a passenger sitting in the driver's section 5 can operate the meter panel 17 as needed, and the displayed items on the meter panel 17 are changed according to the passenger's operation. The steering lever 16 corresponds to the "operating tool" of the present invention.

[0043] In addition, a side mirror 31, a turn signal light 32, and an armrest 33 are supported on the right end of the front panel 12. The armrest 33 extends further toward the seat 11 than the steering operation lever 16.

[0044] The side panel 13 is provided with a main speed change control lever 18 and other components. The main speed change control lever 18 is located at the front of the side panel 13. The main speed change control lever 18 is configured as a lever that can be swung back and forth. A passenger in the driver's section 5 can change the speed of a main transmission (not shown) by operating the main speed change control lever 18.

[0045] Additionally, an inertial navigation unit 19 is provided inside the side panel 13, below and behind the swing support shaft of the main transmission operation lever 18. The inertial navigation unit 19 is disposed at a lower position on the combine than the positioning unit 20. Therefore, the inertial navigation unit 19 is less susceptible to vibrations of the combine compared to a configuration in which the inertial navigation unit 19 is disposed at the same height as the positioning unit 20. Additionally, as shown in FIG. 2, the inertial navigation unit 19 is located in the central region in the left-right direction of the vehicle body. The positioning unit 20 and the inertial navigation unit 19 are aligned in the front-to-rear direction.

[0046] A box-shaped upper protrusion 40 is provided behind the seat 11. The upper protrusion 40 protrudes higher than the upper surface of the engine bonnet 10. The upper surface of the upper protrusion 40 is located at a height corresponding to the upper part of the backrest of the seat 11. Although not described in detail, the upper protrusion 40 houses an air cleaner for intake to the engine E, an electronic control unit (so-called ECU), etc.

[0047] [About the positioning unit] The positioning unit 20 of this embodiment includes a receiving device 21, a portal member 22, a horizontal frame member 23, and a stay member 24.

[0048] 2, the portal member 22 extends in the front-to-rear direction in a plan view of the aircraft. The horizontal frame member 23 is connected to a lower front portion of the portal member 22 and extends along the horizontal direction in a plan view of the aircraft. In other words, the positioning unit 20 is formed into an L-shape in a plan view by the portal member 22 and the horizontal frame member 23.

[0049] As shown in Fig. 3, a connecting member 25 is provided at the upper front part of the gate-shaped member 22. A stay member 24 is swingably supported by the connecting member 25. The receiving device 21 is attached to the free end of the stay member 24. In other words, the stay member 24 is supported by the gate-shaped member 22 via the connecting member 25, and also connects and supports the receiving device 21.

[0050] The portal member 22 and the horizontal frame member 23 correspond to the "frame member" of the present invention and support the receiving device 21. The horizontal frame member 23 corresponds to the "horizontal frame portion" of the present invention. The stay member 24 corresponds to the "stay portion" of the present invention. The connecting member 25 corresponds to the "connecting portion" of the present invention. The connecting member 25 is included in the "forward tilt frame."

[0051] The state in which the stay member 24 is swung upward is shown by the solid line in FIG. 1, and at this time, the state of the positioning unit 20 is (State of stay member 24) The state in which the stay member 24 is swung downward is shown by the broken line in FIG. 1, and at this time, the state of the positioning unit 20 is (State of stay member 24) is the first state. The angle difference between the angle of the stay member 24 when the positioning unit 20 is in the first state and the angle of the stay member 24 when the positioning unit 20 is in the second state is 90 degrees or approximately 90 degrees (for example, 89 to 91 degrees).

[0052] As shown in Fig. 1, 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 grain discharge device 9 in the stored state. Also, as shown in Fig. 1, when the positioning unit 20 is in the second state, the receiving device 21 is located at a position higher than the upper end of the horizontal conveyor 9B in the stored state. The stay member 24 causes the positioning unit 20 to appear in the second state by swinging upward more than when the positioning unit 20 is in the first state. In other words, the positioning unit 20 is configured to be able to change its state between a first state in which the entire positioning unit 20 is located at a position lower than the upper end of the horizontal conveyor 9B in the stored state, and a second state in which at least the receiving device 21 of the positioning unit 20 is located at a position higher than when it is in the first state.

[0053] When the positioning unit 20 is in the second state, the receiving device 21 is less susceptible to the effects of multipath and the like compared to the height of the receiving device 21 when the positioning unit 20 is in the first state, improving the positioning accuracy of the receiving device 21 during harvesting work. 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 shed where the combine is kept is low.

[0054] When the positioning unit 20 is in the second state, the receiving device 21 is located forward of the driving unit 5. Also, when the positioning unit 20 is in the second state, the receiving device 21 is located at the center of the left-right width of the reaping unit 4, overlapping with the reaping unit 4 in a plan view.

[0055] The portal member 22 is formed in a portal shape when viewed from the side of the machine body. The portal member 22 is arranged on the left side of the driver's unit 5. The portal member 22 has front and rear frame portions 22a, a front vertical frame portion 22b, a rear vertical frame portion 22c, and a connecting member 25. Details will be described later, but the front portion of the front and rear frame portion 22a and the upper end portion of the front vertical frame portion 22b are connected via the connecting member 25. When viewed from the side of the machine body, the front and rear frame portion 22a overlap with the lateral conveying section 9B in the stored state (see FIG. 1). The front vertical frame portion 22b is included in the "support base" and the "forward inclined frame."

[0056] The front vertical frame portion 22b and the rear vertical frame portion 22c are arranged side by side in the fore-and-aft direction of the vehicle. The front-and-aft frame portion 22a is arranged across the upper end of the front vertical frame portion 22b and the upper end of the rear vertical frame portion 22c. In other words, the front-and-aft frame portion 22a is connected to the upper end of each of the front vertical frame portion 22b and the rear vertical frame portion 22c and extends along the fore-and-aft direction of the vehicle. The front vertical frame portion 22b and the rear vertical frame portion 22c correspond to the "vertical frame portion" in the present invention. The front vertical frame portion 22b corresponds to the "foremost vertical frame portion" in the present invention.

[0057] The front vertical frame portion 22b is erected in an inclined posture (forward leaning posture) so that the upper portion is positioned closer to the front of the aircraft. The lower end of the front vertical frame portion 22b is connected with bolts to the left side portion of the front part of the side panel 13. In other words, the front vertical frame portion 22b is supported by the left side portion of the front part of the side panel 13.

[0058] The front and rear frame portions 22a and the rear vertical frame portion 22c are formed as an integral member, and the boundary portion between the front and rear frame portion 22a and the rear vertical frame portion 22c is bent. The rear vertical frame portion 22c is erected in a forward-leaning position on the left side behind the driver's station 5. The lower end portion of the rear vertical frame portion 22c is bent so as to follow the left-right direction of the vehicle body. The lower end portion of this rear vertical frame portion 22c is bolted to the upper surface portion of the upper protrusion 40. In other words, the rear vertical frame portion 22c is supported on the upper surface portion of the upper protrusion 40. In this way, the portal member 22 is supported on the left side of the driver's station 5. In other words, the driver's station 5 is provided in a state biased to the right side of the vehicle body with respect to the center of the vehicle body, and the portal member 22 is supported on the end portion of the driver's station 5 on the left-right center side of the vehicle body.

[0059] The horizontal frame member 23 includes a horizontal frame portion 23a and a vertical frame portion 23b. The horizontal frame member 23 is L-shaped when viewed from the front and rear of the aircraft. The boundary between the horizontal frame portion 23a and the vertical frame portion 23b is bent. The left end of the horizontal frame portion 23a is connected to the lower part of the front vertical frame portion 22b of the portal member 22 with a bolt. The horizontal frame portion 23a extends across both the left and right ends of the front panel 12. The vertical frame portion 23b extends downward from the right end of the horizontal frame portion 23a, and two upper and lower locations of the vertical frame portion 23b are connected to the right side of the front panel 12 with a bolt. In this way, the horizontal frame member 23 is connected to the lower part of the front vertical frame portion 22b of the portal member 22 and the outer lateral end of the front panel 12 of the aircraft, and extends along the left-right direction of the aircraft. In this way, the portal member 22 is firmly supported by the horizontal frame member 23.

[0060] The horizontal frame member 23 is located forward of the steering operation lever 16. The horizontal frame member 23 is also located below the upper end of the steering operation lever 16. Therefore, when the driver sitting in the seat 11 monitors the field in front of the machine body, the driver can easily check the field without being concerned about the horizontal frame member 23.

[0061] 2 and 4, the vertical frame portion 23b is located laterally outward of the support base ends of the side mirrors 31, the turn signals 32, and the armrest 33. In particular, the vertical frame portion 23b is located to the right of the right side of the turn signal 32. As shown in FIG. 3, the vertical frame portion 23b is located further forward of the support base ends of the side mirrors 31 and the armrest 33. Therefore, the horizontal frame member 23 also serves as a protective member for protecting the side mirrors 31, the turn signals 32, and the armrest 33. In addition, the horizontal frame member 23 can also be used as a member for retrofitting, for example, a separate operating device or display device (for example, a setting button operating tool or display panel related to automatic steering or automatic driving).

[0062] [Regarding the swing support structure of the receiver in the positioning unit] 5 to 7, the swing support structure of the receiving device 21 will be described. As described above, the connecting member 25 connects the front and rear frame portions 22a and the front vertical frame portion 22b, and supports the stay member 24 so that it can swing.

[0063] The connecting member 25 includes left and right flat plate portions 25a, support plate portions 25b and 25c, and a reinforcing plate portion 25d. The support plate portions 25b and 25c and the reinforcing plate portion 25d are located between the left and right flat plate portions 25a. Note that the left flat plate portion 25a is omitted in the left side view of the aircraft body in Figure 5.

[0064] Both sides of the receiving plate portions 25b, 25c in the short side direction (front and back directions in FIG. 5) are welded to the left and right flat plate portions 25a. The reinforcing plate portion 25d is formed in a flat plate shape, and both sides of the short side direction (front and back directions in FIG. 5) are welded to the left and right flat plate portions 25a. The receiving plate portion 25b corresponds to the "first support portion" of the present invention, and the receiving plate portion 25c corresponds to the "second support portion" of the present invention.

[0065] The receiving plate portion 25b is connected to the front vertical frame portion 22b. The receiving plate portion 25b is formed in an L-shape in a side view. The receiving plate portion 25b has a vertical surface portion along the up-down direction and a horizontal surface portion extending forward at the upper end of the vertical surface portion. The upper end of the front vertical frame portion 22b abuts against the horizontal surface portion of the receiving plate portion 25b, and the rear surface portion of the upper part of the front vertical frame portion 22b abuts against the vertical surface portion of the receiving plate portion 25b. In this state, the upper part of the front vertical frame portion 22b is welded and fixed to the receiving plate portion 25b.

[0066] The receiving plate portion 25c is located rearward and upward from the receiving plate portion 25b and is connected to the front and rear frame portions 22a. The receiving plate portion 25c is L-shaped in a side view. The receiving plate portion 25c has a horizontal surface portion that extends horizontally and a vertical surface portion that extends upward at the front end of the horizontal surface portion.

[0067] Two bolt holes are formed in the horizontal surface of the receiving plate 25c, and weld nuts 25Nu are provided at locations on the horizontal surface that correspond to the two bolt holes. In addition, two bolt holes are formed in the front of the front / rear frame 22a.

[0068] 5 and 6, the front portion of the front-rear frame portion 22a is disposed above the horizontal surface of the receiving plate portion 25c, and a receiving plate 26 is interposed between the horizontal surface of the receiving plate portion 25c and the front portion of the front-rear frame portion 22a. The receiving plates 26 abut against the upper and lower portions of the front portion of the front-rear frame portion 22a. Two bolt holes are formed in each receiving plate 26.

[0069] The receiving plate portion 25c, the front portions of the front and rear frame portions 22a, and the two receiving plates 26 are arranged so that their respective two bolt holes overlap in a plan view. In this state, two bolts pass through the respective bolt holes of the receiving plate portion 25c, the front portions of the front and rear frame portions 22a, and the two receiving plates 26, and are fastened to the weld nuts 25Nu. This fixes the front and rear frame portions 22a to the connecting member 25 with the bolts.

[0070] As shown in FIGS. 3 to 5, the stay member 24 has a pipe portion 24a, a channel portion 24b, a plate portion 24c, and a handle portion 24d. The pipe portion 24a is formed in a hollow circular shape in a cross-sectional view (see FIG. 6). The pipe portion 24a extends from the swing base end to the free end of the stay member 24. The channel portion 24b is connected to the swing base end of the pipe portion 24a by welding. The channel portion 24b is formed in a channel shape, i.e., a U-shape, in a cross-sectional view (see FIG. 6). The handle portion 24d is connected to the swing base end of the pipe portion 24a by welding. The handle portion 24d is located closer to the free end than the channel portion 24b. The plate portion 24c is connected to the free end of the pipe portion 24a by welding. The receiving device 21 is fixed to the plate portion 24c with bolts.

[0071] As shown in Fig. 4, the plate portion 24c is biased toward the side where the driver's unit 5 is located relative to the pipe portion 24a. In a front view (viewed in the front-rear direction of the aircraft) shown in Fig. 4, the plate portion 24c and the receiver 21 are located above the side panel 13, i.e., above the driver's unit 5. The plate portion 24c and the receiver 21 are located in the central region in the left-right direction of the aircraft (see Fig. 2).

[0072] Holes for the swing support pins 27 to pass through are formed in both side surfaces of the U-shaped cross section of the channel portion 24b. Holes for the swing support pins 27 to pass through are also formed in each of the left and right flat plate portions 25a. As shown in FIGS. 5 to 7, the swing support pins 27 pass through the holes formed in the left and right flat plate portions 25a and the holes formed in both side surfaces of the U-shaped cross section of the channel portion 24b. A head is formed at one end of the swing support pin 27, and this end is engaged with one of the left and right flat plate portions 25a. The other end of the swing support pin 27 is engaged with the other of the left and right flat plate portions 25a by a snap pin 27a. This allows the stay member 24 to swing around the swing support pin 27, which passes through the holes in the left and right flat plate portions 25a and the channel portion 24b. That is, the stay member 24 is configured to be swingable around a swing support pin 27 (around a left-right axis) that extends along the left-right direction of the machine body.

[0073] 1 and 2, the front end (free end) of the lateral conveying section 9B is located forward of the positioning unit 20 when in the stored state at the home position. In other words, when in the stored state, the lateral conveying section 9B extends forward and backward and extends further forward of the machine body than the positioning unit 20. In this embodiment, the positioning unit 20 is configured to be able to change its state from the second state to the first state by swinging the stay member 24 in the forward tilting direction. This allows the positioning unit 20 to avoid contact with the lateral conveying section 9B in both the first state and the second state.

[0074] As shown in Figures 6 and 7, two holes 24i for fastening knob bolts 28 are drilled in one side surface of the U-shaped cross section of channel portion 24b, and weld nuts 24Nu are provided at the locations of channel portion 24b where holes 24i are located. Also, as shown in Figures 5 to 7, two holes 25i and two holes 25j for passing knob bolts 28 through are formed in one of the left and right flat plate portions 25a. The two holes 25i are aligned in the vertical direction, and the two holes 25j are aligned in the horizontal direction.

[0075] As shown by the dashed lines in Figure 5, when the positioning unit 20 is in the first state, the stay member 24 is tilted forward, and in this state, the channel portion 24b and the receiving plate portion 25c abut against each other. That is, when the positioning unit 20 is in the first state, the receiving plate portion 25c abuts against the stay member 24, restricting the stay member 24 from swinging forward. In this state, the knob bolt 28 passes through the hole 25j in the flat plate portion 25a and is fastened to the weld nut 24Nu. This maintains the state in which the stay member 24 is tilted, i.e., the first state of the positioning unit 20.

[0076] As shown by solid lines in Figure 5, when the positioning unit 20 is in the second state, the stay member 24 rises above the front and rear frame portions 22a, and in this state, the channel portion 24b and the receiving plate portion 25b abut against each other. That is, when the positioning unit 20 is in the second state, the receiving plate portion 25b abuts against the stay member 24, restricting the stay member 24 from swinging rearward. In this state, the knob bolt 28 passes through the hole 25i in the flat plate portion 25a and is fastened to the weld nut 24Nu. This maintains the state in which the stay member 24 rises above the front and rear frame portions 22a, i.e., the second state of the positioning unit 20.

[0077] [Another embodiment] The present invention is not limited to the configurations exemplified in the above-described embodiments, and other representative embodiments of the present invention will be exemplified below.

[0078] (1) In the above-described embodiment, the driving unit 5 is provided in a state biased toward the right side of the machine body, and the gantry member 22 is supported at the left end of the driving unit 5. This embodiment is not limited to this. For example, the driving unit 5 may be provided in a state biased toward the left side of the machine body, and the gantry member 22 may be supported at the right end of the driving unit 5. That is, the driving unit 5 may be provided in a state biased toward one of the left and right sides of the machine body, and the gantry member 22 may be supported at the other end of the driving unit 5. Alternatively, the gantry member 22 may not be supported by the driving unit 5. In this case, the driving unit 5 may be provided in a state biased toward one of the left and right sides of the machine body, and the gantry member 22 may be provided adjacent to the driving unit 5 while being located closer to the center of the machine body than the driving unit 5. In other words, the driving unit 5 may be provided in a state biased toward one of the left and right sides with respect to the center of the machine body, and the gantry member 22 may be provided adjacent to the other left and right side of the driving unit 5.

[0079] (2) The horizontal frame member 23 does not have to be configured to extend across the left and right sides of the driver's section 5, and may be configured to be connected to the left end of the driver's section 5. In other words, the horizontal frame member 23 may be configured to be connected to the portal member 22 and the end of the driver's section 5 in the left-right direction of the machine body.

[0080] (3) The "vertical frame portion" of the present invention may be configured to be provided in addition to the front vertical frame portion 22b and the rear vertical frame portion 22c. In other words, the portal member 22 may be configured to have a plurality of vertical frame portions arranged side by side in the fore-and-aft direction of the aircraft body.

[0081] (4) In the above-described embodiment, the horizontal frame member 23 is positioned below the upper end of the steering operation lever 16. This is not limiting, and for example, the horizontal frame member 23 may be positioned above the upper end of the steering operation lever 16. For example, the vertical frame portion 23b of the horizontal frame member 23 may extend to a height corresponding to the height position of the front and rear frame portions 22a, and the horizontal frame portion 23a of the horizontal frame member 23 may extend in the lateral direction of the aircraft at a height position corresponding to the height position of the front and rear frame portions 22a.

[0082] (5) In the above-described embodiment, the positioning unit 20 is configured to be able to change from the second state to the first state by swinging the stay member 24 in a forward tilting direction. This embodiment is not limiting, and for example, the positioning unit 20 may be configured to be able to change from the second state to the first state by swinging the stay member 24 in a backward tilting direction. The positioning unit 20 may also be configured to be able to change from the second state to the first state by swinging the stay member 24 in the left-right direction toward the side where the driving unit 5 is located. Additionally, the positioning unit 20 may be configured to be able to change from the second state to the first state by swinging the stay member 24 in the left-right direction toward the side where the driving unit 5 is located, as long as it is configured not to abut against the lateral conveyance unit 9B or other devices.

[0083] (6) In the above-described embodiment, when the positioning unit 20 is in the second state, the receiving device 21 overlaps with the reaping unit 4 in a plan view. This is not limited to the embodiment, and for example, when the positioning unit 20 is in the second state, the receiving device 21 may be configured to overlap with the driving unit 5 (e.g., the front panel 12 or the side panel 13) in a plan view.

[0084] (7) In the embodiment described above with reference to Fig. 1, the front and rear frame portions 22a overlap with the lateral conveying portion 9B in the stored state in a side view of the machine body. This is not limited to this embodiment, and for example, the front and rear frame portions 22a may be positioned below the lateral conveying portion 9B in the stored state.

[0085] (8) 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 grain discharge device 9 in the storage state. The positioning unit 20 may be configured so that when the positioning unit 20 is in the first state, almost the entire positioning unit 20 is located at a position lower than the upper end of the grain discharge device 9 in the storage state. In other words, a configuration is also possible in which the upper part of the positioning unit 20 is located at a position higher than the upper end of the grain discharge device 9 in the storage state, to an extent that does not interfere with storage of the combine harvester.

[0086] (9) In the above embodiment, a head-feeding combine harvester is exemplified, but a whole-culm-feeding combine harvester (a so-called normal combine harvester) may also be used.

[0087] The configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments, unless a contradiction arises. Furthermore, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these, and can be modified as appropriate within the scope of the present invention. [Industrial Applicability]

[0088] The present invention is applicable to combine harvesters. [Explanation of symbols]

[0089] 4: Reaping part 5: Driving section 6: Threshing equipment 8: Grain tank 9: Grain discharge device (conveyor device) 9A: Vertical conveying section 9B: Horizontal conveying section 9C: Discharge port 11: Sheet 12: Front panel 16: Steering control lever (control tool) 20: Positioning unit 21: Receiving device 22: Gate-shaped member (frame member) 22a: Front and rear frame parts 22b: Front vertical frame part (vertical frame part , support base, forward tilt frame ) 22c: Rear vertical frame part (vertical frame part) 23: Horizontal frame member (frame member, horizontal frame part) 24: Stay member (stay part) 25: Connecting member (connecting part , forward tilt frame ) 25b: Receiving plate portion (first support portion) 25c: Receiving plate portion (second support portion)

Claims

1. A running device; a reaping unit that reaps crops in the field; A driving unit located behind the reaping unit; a receiving device for receiving signals from a satellite; a frame member for supporting the receiving device, The receiver is located in front of the driving unit of the combine harvester.

2. A combine harvester as described in Claim 1, wherein the receiving device overlaps with the cutting unit when viewed from above.

3. A front panel is provided in front of the driving section, The combine harvester according to claim 1 , wherein the receiving device is located forward of the front panel.

4. The front panel is provided with a meter panel, The combine harvester according to claim 3, wherein the receiving device is located forward of the meter panel.

5. The front panel is provided with an operating tool for steering the traveling device, The combine harvester according to claim 3 , wherein the receiving device is located forward of the operating tool.

6. A seat is provided behind the driver's section, The combine harvester according to any one of claims 1 to 5, wherein the receiving device is located forward of a front end of the sheet.

7. The frame member has a support base supported by the driving section and a forward inclined frame inclined upwardly toward the front above the support base, The combine harvester according to any one of claims 1 to 5, wherein the receiving device is located forward of the forward tilting frame.

8. A front end portion of the forward tilt frame is located forward of the driving section, The combine harvester according to claim 7, wherein the receiving device is located forward of the forward tilting frame.

9. A stay portion for fixing the receiving device is provided, a lower portion of the stay portion is connected to an upper portion of the forward tilt frame, an end portion of the stay portion opposite to the lower portion extends forward beyond the forward oblique frame, The combine harvester according to claim 7, wherein the receiving device is fixed to an end of the stay portion opposite to the lower portion.

10. A combine harvester as described in Claim 9, wherein the stay portion is configured to be changeable between a first state in which the receiving device is positioned below the upper end of the forward inclined frame, and a second state in which the receiving device is positioned above the upper end of the forward inclined frame.

Images