Work vehicle

Abstract

The present invention is provided with: a seating section (5) on which an occupant sits; a ceiling (41) having a cover portion (41A) covering the seating portion from above and a frame portion (41B) supported by the machine body and supporting the cover portion (41A) in a state of overlapping the cover portion (41A) in a plan view of the machine body; and a reception device (20) that receives a signal from a satellite, the ceiling (41) being configured such that the frame portion (41B) is located outside a range of a reception area (R1) of the reception device (20).

Description

Technical Field

[0001] The present invention relates to a work vehicle. Background Art

[0002] For example, in the work vehicle (referred to as "combine harvester" in the literature) disclosed in Japanese Unexamined Patent Application Publication No. 2020-103055 (Patent Document 1), a canopy and a receiving device (referred to as "GPS antenna unit" in the literature) for receiving signals from satellites are provided.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2020-103055. Summary of the Invention

[0006] Technical Problem to be Solved by the Invention

[0007] However, when the receiving device receives signals from satellites, in order to improve the positioning accuracy, a structure in which the receiving device is arranged at a position higher than other components is more desirable. On the other hand, in order to ensure the comfort of the seating part, the position of the canopy is often set high. For example, the frame part of the canopy may have the property of reflecting radio waves from satellites. Therefore, if the position of the canopy becomes high, there is a risk that the receiving device cannot receive signals from satellites with high precision.

[0008] An object of the present invention is to provide a work vehicle in which a receiving device can receive signals from satellites with high precision regardless of the vertical position of the canopy.

[0009] Means for Solving the Problem

[0010] In the work vehicle of the present invention, there are provided: a seating part for a rider to sit; a canopy having a cover part and a frame part, the cover part covering the seating part from above, and the frame part being supported by the body and supporting the cover part in a state of overlapping the cover part when viewed from above the body; and a receiving device for receiving signals from satellites, and the canopy is arranged such that the frame part is outside the range of the receiving area of the receiving device.

[0011] According to the present invention, the frame part is outside the range of the receiving area of the receiving device. Therefore, for example, even when the upper end part of the canopy is located above the receiving device, the risk that the frame part reflects radio waves from satellites is greatly reduced, and the receiving device can receive signals from satellites with high precision. Thus, a work vehicle is realized in which the receiving device can receive signals from satellites with high precision regardless of the vertical position of the canopy.

[0012] In the present invention, preferably, the work vehicle is provided with a position changing mechanism that supports the frame portion and allows the canopy to change its position across a preset first position and a preset second position that is above the first position, and the second position is set such that the frame portion is located in a region below the lower limit boundary of the receiving area.

[0013] According to this structure, the position of the canopy can be changed across the first position and the second position. Therefore, the rider can change the height of the canopy according to their preference, and the receiving device can receive signals from satellites with high precision.

[0014] In the present invention, preferably, when the canopy is in the second position, the upper end portion of the canopy is located at a position above the upper end portion of the receiving device.

[0015] According to this structure, the receiving accuracy of the receiving device and the comfort of the seating portion are ensured simultaneously.

[0016] In the present invention, preferably, the seating portion is provided with a seat for the rider to sit on, and the position changing mechanism is configured to be able to change the position of the canopy to a covering position that overlaps with the seat in a top view of the machine body and a non-covering position that does not overlap with the seat in a top view of the machine body, and the movement trajectory when the canopy moves across the covering position and the non-covering position does not overlap with the receiving device in a top view of the machine body.

[0017] According to this structure, when the rider does not need the canopy, the position of the canopy can be set to the non-covering position. Thus, a large space above the seating portion can be ensured. In addition, since the movement trajectory of the canopy across the covering position and the non-covering position does not overlap with the receiving device, the risk of the canopy contacting the receiving device is reduced.

[0018] In the present invention, preferably, the work vehicle is provided with a support portion that supports the receiving device, and the portion of the support portion that overlaps with the canopy located in the covering position in a top view of the machine body does not interfere with either the movement trajectory when the height of the canopy is at the first position or the movement trajectory when the height of the canopy is at the second position.

[0019] According to this structure, within the range where the support portion does not interfere with the movement trajectory of the canopy, the overlap of the support portion and the canopy in a top view is allowed. Thus, the degree of freedom in the shape of the support portion that supports the receiving device can be increased, and the risk of deformation of the support portion caused by contact between the canopy and the support portion can be avoided.

[0020] In the present invention, preferably, the cover portion is made of resin and the frame portion is made of metal.

[0021] In most cases, metals have the property of reflecting radio waves such as signals transmitted from satellites. On the other hand, compared with metals, resins are less likely to reflect radio waves such as signals transmitted from satellites. According to this structure, the metal frame portion is located outside the range of the receiving area of the receiving device. Thus, even when the position of the roof is set relatively high, the risk of the frame portion reflecting radio waves from the satellite is greatly reduced, and the receiving device can receive signals from the satellite with high precision.

[0022] In the present invention, preferably, the receiving device is configured to be able to change its position across a preset storage position and a use position preset at a position above the storage position.

[0023] The work vehicle is stored in a storage warehouse such as a warehouse during periods other than the harvesting period. The ceiling of the storage warehouse is sometimes low, and there is a risk of interference between the ceiling and the receiving device. According to this structure, when the work vehicle is harvesting, the position of the receiving device is set to the use position, and the receiving device can receive signals from the satellite with high precision. In addition, when the work vehicle is stored, the position of the receiving device is set to the storage position, avoiding the risk of interference between the receiving device and the ceiling of the warehouse or the like.

[0024] In the present invention, preferably, the work vehicle includes a support portion that can support the receiving device so that the receiving device can change its position to the storage position and the use position, and when the receiving device is in the storage position, it is at the same or substantially the same height as the upper end portion of the support portion, or is located below the upper end portion of the support portion.

[0025] According to this structure, when the position of the receiving device is changed to the storage position, the position of the receiving device is not higher than that of the support portion. Therefore, the position of the receiving device can be reduced as much as possible during storage.

[0026] In the present invention, preferably, when the receiving device is in the use position, it is located in front of the frame portion.

[0027] According to this structure, the distance between the receiving device and the frame portion can be increased as much as possible. Thus, the receiving device can receive signals from the satellite with high precision.

[0028] In the present invention, preferably, when the receiving device is in the use position, it does not overlap with the roof when viewed from above the machine body.

[0029] According to this structure, the distance between the receiving device and the roof can be increased as much as possible, avoiding the risk of contact between the receiving device and the roof. In addition, the receiving device can receive signals from the satellite with high precision.

[0030] In the present invention, preferably, when the receiving device is in the use position, the whole or substantially the whole of the receiving device is located at a position on the front side compared with the canopy.

[0031] According to this structure, the distance between the receiving device and the canopy can be increased as much as possible. Thereby, the receiving device can receive signals from satellites with high precision.

[0032] In the present invention, preferably, the seating part is biased to one side of the left and right with respect to the center of the machine body, and the receiving device is located on the other side of the left and right with respect to the seating part when in the use position.

[0033] According to this structure, since the position of the receiving device is misaligned with respect to the seating part, the distance between the receiving device and the cab can be increased. In addition, according to this structure, since the receiving device is located in the central region of the left and right of the machine body, the position calculation of the machine body becomes easier compared with the structure in which the receiving device is located at the ends of the left and right of the machine body.

[0034] In the present invention, preferably, the work vehicle is provided with a conveying device having a longitudinal conveying part and a lateral conveying part. The longitudinal conveying part longitudinally conveys the grains stored in a grain box storing grains, and the lateral conveying part is connected to the upper end part of the longitudinal conveying part and has a discharge port, laterally conveys the grains from the longitudinal conveying part and discharges them from the discharge port. The lateral conveying part is configured to be able to move up and down and rotate left and right, and can extend out of the machine body from the storage state where it is stored in the starting position straddling the central part of the machine body when viewed from above the machine body to discharge grains. When the receiving device is in the use position, it does not overlap with the lateral conveying part in the storage state when viewed from above the machine body.

[0035] According to this structure, in the left-right direction, the receiving device is arranged in the space between the canopy and the lateral conveying part in the storage state. Thereby, this space can be effectively utilized.

[0036] In the present invention, preferably, the receiving device is configured to be able to change its position from the use position to the storage position by swinging in the forward-falling direction, and when in the storage position, the receiving device is located behind the machine body compared with the lateral conveying part in the storage state.

[0037] According to this structure, when the position of the receiving device is in the storage position, it is located behind compared with the lateral conveying part. Therefore, the receiving device is not easily contacted by foreign objects when the work vehicle is stored.

[0038] In the present invention, preferably, when the receiving device is in the storage position, the whole of the receiving device is located at the same or substantially the same height as the upper end of the lateral conveying portion in the storage state, or the whole of the receiving device is located below the upper end of the lateral conveying portion in the storage state.

[0039] The lateral conveying portion of the conveying device is also located at a relatively high position in the work vehicle. Therefore, when the position of the receiving device is the first position, it is easy to control the total height of the work vehicle to be the same as that of the conventional work vehicle. Thus, even when the ceiling of the storage warehouse for storing the work vehicle is low, interference between the ceiling and the receiving device can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is an overall side view of the combine harvester.

[0041] Figure 2 is an overall top view of the combine harvester.

[0042] Figure 3 is a right side view of the machine body showing the support structure of the seating portion, the canopy, and the receiving device.

[0043] Figure 4 is a front view of the machine body showing the support structure of the seating portion, the canopy, and the receiving device.

[0044] Figure 5 is a top view of the machine body showing the support structure of the seating portion, the canopy, and the receiving device.

[0045] Figure 6 is a right side view of the machine body showing the swing support structure and the position holding structure of the receiving device.

[0046] Figure 7 is a top view of the machine body showing the swing support structure and the position holding structure of the receiving device.

[0047] Figure 8 is a front view of the machine body showing the swing support structure and the position holding structure of the receiving device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] Hereinafter, the work vehicle according to the present embodiment will be described by taking a self-threshing combine harvester as an example.

[0049] Figure 1 is a left side view of the combine harvester, Figure 2 is a top view of the combine harvester. Here, for the sake of easy understanding, in the present embodiment, unless otherwise specified, "front" ( Figure 1 the direction of the arrow "F" shown) represents the front in the longitudinal direction (travel direction) of the machine body, "rear" ( Figure 1The direction of arrow "B" shown) represents the rear in the longitudinal direction (travel direction) of the machine body. In addition, "up" ( Figure 1 the direction of arrow "U" shown) and "down" ( Figure 1 the direction of arrow "D" shown) are the positional relationships in the vertical direction (direction perpendicular to the horizontal plane), representing the relationship of the height relative to the ground. Furthermore, the left-right direction or the lateral direction refers to the transverse direction of the machine body (machine body width direction) orthogonal to the longitudinal direction of the machine body. That is, "left" ( Figure 2 the direction of arrow "L" shown) and "right" ( Figure 2 the direction of arrow "R" shown) respectively represent the left direction and the right direction of the machine body. The same applies to Figure 3 the drawings after that.

[0050] 〔Regarding the overall situation of the combine harvester〕

[0051] As Figure 1 shown, the traveling machine body 1 of the combine harvester is equipped with a machine body frame 2, and the machine body frame 2 is formed by connecting a plurality of steel materials such as square steel pipes. A pair of left and right crawler-type traveling devices 3 are equipped at the lower part of the machine body frame 2. A seating part 5 is provided at the right lateral part in the front of the traveling machine body 1. The seating part 5 is for the rider to sit on. It should be noted that since the combine harvester (work vehicle) of this embodiment is structured to be able to travel automatically and steer automatically, the riders sitting on the seating part 5 include both the rider who drives the combine harvester and the rider who does not drive the combine harvester. An engine E is arranged below the seating part 5. The seating part 5 is not covered by a cab and is open to the outside.

[0052] A harvesting part 4 is provided at the front of the traveling machine body 1 so as to be liftable. The harvesting part 4 has a plurality of dividing devices 4a and a plurality of reel devices 4b. The harvesting part 4 harvests while pulling up the upright cereal straws (crops) such as rice and wheat planted in a plurality of rows with the reel devices 4b in front of the traveling machine body 1, and conveys the harvested cereal straws to the rear of the machine body. A threshing device 6 and a grain tank 8 are supported in a horizontally arranged state at the rear of the machine body frame 2. The threshing device 6 is arranged behind the harvesting part 4, and the grain tank 8 is arranged behind the seating part 5. A feeding chain 7 is provided at the left side part of the threshing device 6, and the feeding chain 7 clamps and conveys the harvested cereal straws harvested by the harvesting part 4 to the rear. In the threshing device 6, threshing treatment is performed on the input harvested cereal straws, and sorting treatment for sorting the grains and dust obtained through the threshing treatment is performed. The grain tank 8 stores the grains that have undergone threshing treatment and are conveyed from the threshing device 6. A conveying device 9 for taking out the grains from the grain tank 8 is connected to the rear of the grain tank 8.

[0053] The conveying device 9 includes a longitudinal conveying part 9A and a lateral conveying part 9B. The longitudinal conveying part 9A is connected to the lower rear part of the grain tank 8 and longitudinally conveys the grains stored in the grain tank 8. The lateral conveying part 9B is connected to the upper end part of the longitudinal conveying part 9A and laterally conveys the grains from the longitudinal conveying part 9A. A discharge port 9C is provided at the end part on the downstream side in the conveying direction of the lateral conveying part 9B. The lateral conveying part 9B conveys the grains from the longitudinal conveying part 9A to the discharge port 9C and discharges them outside the machine from the discharge port 9C.

[0054] The lateral conveying part 9B is configured to be able to move up and down and rotate left and right. As Figure 1 and Figure 2 shown, when the conveying device 9 is not in use, the lateral conveying part 9B extends in the front-rear direction in a state of being located above the threshing device 6 and the grain tank 8 and straddling the central part of the machine body in a plan view. The state of the lateral conveying part 9B at this time is referred to as the "storage state". In addition, the position of the lateral conveying part 9B at this time is referred to as the "starting position".

[0055] When the conveying device 9 is in use, the lateral conveying part 9B can extend outward from the machine body from the storage state stored in the starting position and discharge grains. Here, the outside of the machine body means the left side (lateral outside of the machine body) compared with the left side part of the threshing device 6, the right side (lateral outside of the machine body) compared with the right side part of the grain tank 8, and the rear side compared with the rear end parts of the threshing device 6 and the grain tank 8 respectively. That is to say, when the conveying device 9 is in use, the lateral conveying part 9B extends from the traveling machine body 1 to a side away from the left and right sides or the rear, and discharges the grains stored in the grain tank 8.

[0056] In the combine harvester of the present embodiment, a receiving device 20 for satellite positioning is provided. The receiving device 20 receives signals from navigation satellites (not shown), such as GNSS (Global Navigation Satellite System, such as GPS (Global Positioning System), GLONASS (Glonass Satellite Navigation System), Galileo (Galileo Satellite Navigation System), QZSS (Quasi-Zenith Satellite System), and BeiDou (BeiDou Satellite Navigation System)), etc., to obtain the position of the vehicle. The receiving device 20 is provided at a position biased to the left side (one side in the left-right direction) of the center of the left and right with respect to the seating part 5.

[0057] As Figure 1 、 Figure 3 and Figure 4As shown, the receiving device 20 receives signals from navigation satellites, and the signals from the navigation satellites are within the range of the receiving area Ra set in the area on the zenith side compared to the elevation angle θ preset with respect to the horizontal direction. The part represented by the elevation angle θ is the lower limit boundary of the receiving area Ra of the receiving device 20. It should be noted that in order to supplement satellite navigation based on the signals received by the receiving device 20, an inertial navigation unit (not shown) equipped with a gyro acceleration sensor or a magnetic azimuth sensor is provided. The elevation angle θ is set to 15° for example, but can be appropriately set and changed within the range of 10° to 30° for example.

[0058] 〔Ride section〕

[0059] The ride section 5 is provided in a state biased to the right side of the body center with respect to the body. As Figures 1 to 4 shown, the ride 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. The seat 11 is provided in the central area of the ride section 5. The seat 11 is for the rider to sit on. A floor section 15 ( Figure 3 ) is provided between the front panel 12 and the seat 11 in the front-rear direction. A footrest 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 ride section 5 opposite to the side where the footrest 14 is located.

[0060] A steering operation lever 16 and an instrument panel (not shown) are provided on the front panel 12. The steering operation lever 16 is an operating instrument for running operation, and is provided at the right end of the front panel 12 and in front of the seat 11. The rider sitting on the ride section 5 can perform a steering operation on the traveling device 3 by operating the steering operation lever 16. In addition, the rider can perform a lifting operation on the harvesting section 4 by operating the steering operation lever 16. That is to say, the steering operation lever 16 accepts steering operation and work operation. On the instrument panel (not shown), for example, the traveling speed, engine speed, fuel remaining amount, etc. are displayed.

[0061] A main speed change operation lever 18 etc. are provided on the side panel 13. The main speed change operation lever 18 is arranged at the front part of the side panel 13. The main speed change operation lever 18 is composed of a lever that can be swung in the front-rear direction. The rider sitting on the ride section 5 can perform a speed change operation on the main speed change device (not shown) by operating the main speed change operation lever 18.

[0062] A box-shaped rear box 40 is provided behind the seat 11. The rear box 40 protrudes upward compared to the mounting surface part of the seat 11. The upper surface part of the rear box 40 is at a height corresponding to the upper part of the backrest part of the seat 11. Although not described in detail, an air cleaner for intake of the engine E, an electronic control unit (so-called ECU), etc. are housed inside the rear box 40.

[0063] Above the seating section 5, there is a canopy 41. The canopy 41 covers the seating section 5 for sunshade and rain shelter. The canopy 41 has a cover portion 41A and a frame portion 41B. The cover portion 41A covers the seating section 5 from above. The cover portion 41A is made of resin, for example. The frame portion 41B is made of metal. The frame portion 41B is supported by the traveling body 1 via a telescopic support 42 and supports the cover portion 41A in a state of overlapping with the cover portion 41A when viewed from above the body. The telescopic support 42 corresponds to the "position changing mechanism" of the present invention.

[0064] The canopy 41 is supported by the telescopic support 42. The telescopic support 42 supports the frame portion 41B. A handle 42H is provided on the telescopic support 42. For example, by the rider operating the handle 42H, the telescopic support 42 expands and contracts in the vertical direction, thereby changing the height position of the canopy 41. As Figure 3 and Figure 4 shown, the telescopic support 42 supports the canopy 41 in such a way that it can change its position across a preset low position Lp and a preset high position Hp which is above the low position Lp. In other words, the telescopic support 42 allows the canopy 41 to change its position across the low position Lp and the high position Hp. It should be noted that, in Figure 3 and Figure 4 , the low position Lp and the high position Hp are positions of heights based on the upper end portion of the canopy 41. It should be noted that if the height difference ΔH between the low position Lp and the high position Hp is constant, the low position Lp and the high position Hp can be based on any position of the canopy 41. When the upper end portion of the canopy 41 is at the high position Hp, the upper end portion of the canopy 41 is above the upper end portion of the receiving device 20. The low position Lp corresponds to the "first position" of the present invention. The high position Hp corresponds to the "second position" of the present invention.

[0065] The frame portion 41B is made of metal. Metal has the property of reflecting radio waves. Therefore, if the frame portion 41B reflects the radio waves from the navigation satellite, there is a possibility that the receiving device 20 cannot correctly receive the signals from the navigation satellite. In the present embodiment, the canopy 41 is configured such that the frame portion 41B is outside the receiving area Ra of the receiving device 20.

[0066] Figure 5 is a top view when the position of the canopy 41 is set to the high position Hp by the telescopic support 42. In Figure 5 , the portion of the canopy 41 that is within the receiving area Ra of the receiving device 20 is shown by the shaded area R1. In Figure 1 , Figure 3 and Figure 4 , it seems that the frame portion 41B is within the receiving area Ra, but actually, as Figure 5As shown, in the canopy 41, only the front portion of the cover portion 41A is within the range of the receiving area Ra, and the frame portion 41B is outside the range of the receiving area Ra. In this way, the high position Hp is set such that the frame portion 41B is in a region below the lower limit boundary of the receiving area Ra of the receiving device 20. As a result, the frame portion 41B is not within the range of the receiving area Ra.

[0067] A fulcrum portion 42B is provided at the upper end portion of the telescopic strut 42. The fulcrum portion 42B rotatably supports the canopy 41 about the vertical axis Y1. Figure 2 The swing range of the canopy 41 is shown. The canopy 41 can swing about the vertical axis Y1 across the position covering the seating portion 5 and the position behind the seating portion 5. The position where the canopy 41 covers the seating portion 5 is referred to as the "covering position". In addition, the position where the canopy 41 is located behind the seating portion 5 is referred to as the "non-covering position". The telescopic strut 42 is configured to be able to change the position of the canopy 41 to the covering position that overlaps the seat 11 in a plan view of the machine body and the non-covering position that does not overlap the seat 11 in a plan view of the machine body.

[0068] When the canopy 41 swings about the vertical axis Y1, the free end portion of the canopy 41 swings via the laterally outer side of the machine body. In Figure 2 it, the movement locus of the free end portion of the canopy 41 when the canopy 41 swings about the vertical axis Y1 is shown as the free end locus Rb. The movement locus of the canopy 41 is the area surrounded by the free end locus Rb and the vertical axis Y1.

[0069] As a result, compared with a structure in which the free end portion of the canopy 41 swings via the laterally inner side of the machine body, the risk of interference between the canopy 41 and other parts of the combine harvester can be avoided. In particular, interference between the canopy 41 and the receiving device 20 is avoided. In any one of the position covering the seating portion 5 and the position behind the seating portion 5, the canopy 41 does not overlap the receiving device 20 in a plan view. In addition, even when the canopy 41 swings about the vertical axis Y1, the canopy 41 does not overlap the receiving device 20 in a plan view. In other words, the movement locus when the canopy 41 moves across the covering position and the non-covering position does not overlap the receiving device 20 in a plan view of the machine body.

[0070] In the present embodiment, the area closer to the zenith side than the elevation angle of 15 degrees with respect to the horizontal direction is the receiving area Ra of the receiving device 20. The receiving device 20 receives signals from navigation satellites located within the range of the receiving area Ra. Even when the telescopic strut 42 is extended to the maximum and the canopy 41 is set at the highest position, the canopy 41 is configured such that the frame portion 41B is outside the range of the receiving area Ra.

[0071] 〔Regarding the support structure of the receiving device〕

[0072] In the present embodiment, the receiving device 20 is supported by the swing support frame 25, and the receiving device 20 and the swing support frame 25 are supported by the support frame 21 so as to be swingable. The support frame 21 that supports the receiving device 20 and the swing support frame 25 includes a front-rear frame member 22, a longitudinal frame member 23, and a lateral frame member 24. The support frame 21 and the swing support frame 25 correspond to the "support portion" of the present invention.

[0073] The front-rear frame member 22 extends in the front-rear direction when viewed from above the body. The longitudinal frame member 23 extends in the vertical direction. In addition, the longitudinal frame member 23 supports the swing support frame 25 and the fulcrum member 26 at the upper part. The front-rear frame member 22 is connected to the upper part of the longitudinal frame member 23 and extends in the horizontal direction or substantially horizontal direction from the longitudinal frame member 23. That is, the front end portion of the front-rear frame member 22 is connected to the upper end portion of the longitudinal frame member 23. The lateral frame member 24 extends in the lateral direction when viewed from above the body. The lateral frame member 24 is connected to the front lower part of the longitudinal frame member 23.

[0074] The support frame 21 is formed in an L shape when viewed from above by the front-rear frame member 22, the longitudinal frame member 23, and the lateral frame member 24. In addition, the support frame 21 is formed in a gate shape when viewed from the side of the body by the front-rear frame member 22 and the longitudinal frame member 23.

[0075] As Figure 3 shown, the swing support frame 25 is pivotally supported by the connecting portion of the front-rear frame member 22 and the longitudinal frame member 23. The receiving device 20 is installed at the free end of the swing support frame 25. The fulcrum member 26 is fixedly connected to the connecting portion of the front-rear frame member 22 and the longitudinal frame member 23 by bolts. The swing support frame 25 is supported by the front-rear frame member 22 and the longitudinal frame member 23 via the fulcrum member 26, and connects and supports the receiving device 20.

[0076] Figure 1 The state in which the swing support frame 25 swings upward is shown by a solid line in Figure 1 At this time, the position of the receiving device 20 is the use position. In addition, in

[0077] The receiving device 20 is configured to be able to change its position across a preset storage position and a use position preset at a position above the storage position. Specifically, the rotation pin of the swing support frame 25 is embedded in the shaft hole of the fulcrum member 26, and the swing support frame 25 swings around the horizontal axis core X1 of the rotation pin. That is to say, the swing support frame 25 and the fulcrum member 26 cause the receiving device 20 to swing within the range between the storage position and the use position. In other words, the swing support frame 25 and the fulcrum member 26 allow the receiving device 20 to change its position across the storage position and the use position. According to this structure, the support frame 21 supports the receiving device 20 in such a way that its position can be changed between the storage position and the use position. As a result, the receiving device 20 is configured to be able to change its position from the use position to the storage position by swinging in the forward-falling direction.

[0078] The angular difference between the extension direction of the swing support frame 25 when the receiving device 20 is in the storage position and the extension direction of the swing support frame 25 when the receiving device 20 is in the use position is 90 degrees or approximately 90 degrees (for example, 89 - 91 degrees).

[0079] When the receiving device 20 is in the use position, compared with the case where the receiving device 20 is in the storage position, the receiving device 20 is less susceptible to multipath and the like, and the positioning accuracy of the receiving device 20 during the harvesting operation is good. In addition, when the receiving device 20 is in the storage position, even when the ceiling of the storage warehouse where the combine harvester is stored is low, interference between the ceiling and the receiving device 20 can be avoided.

[0080] The receiving device 20 is located in front of the seating part 5 when in the use position. In addition, as Figure 2 shown, whether the receiving device 20 is in the use position or the storage position, it overlaps with the harvesting part 4 in plan view and is located at the left - right width center position of the harvesting part 4. As Figure 1 and Figure 2 shown, the receiving device 20 is located within the range of the front - rear width W between the front end of the divider 4a and the rear part of the reel device 4b ( Figure 1 and Figure 2 the upper end of the reel device 4b in ). Whether the receiving device 20 is in the use position or the storage position, it is located within the range of this front - rear width W.

[0081] When the receiving device 20 is in the use position, it is located on the left side of the vehicle body relative to the seating portion 5. When the receiving device 20 is in the use position, substantially the whole of it is located at a position anterior to the roof 41. It should be noted that when the receiving device 20 is in the use position, it may also be entirely located at a position anterior to the roof 41. In addition, when the receiving device 20 is in the use position, it does not overlap with the roof 41 in a plan view of the vehicle body. Further, when the receiving device 20 is in the use position, it does not overlap with the laterally conveying portion 9B in the stored state in a plan view of the vehicle body.

[0082] As Figure 1 shown, when the receiving device 20 is in the use position, the receiving device 20 is located at a position higher than the upper end portion of the laterally conveying portion 9B in the stored state. In addition, when the receiving device 20 is in the storage position, the whole of the receiving device 20 is located at a position lower than the upper end portion of the laterally conveying portion 9B of the conveying device 9 in the stored state. Alternatively, when the receiving device 20 is in the storage position, the upper end portion of the receiving device 20 may also be located at the same or substantially the same height as the upper end portion of the laterally conveying portion 9B in the stored state. When the receiving device 20 is in the storage position, it is located posterior to the laterally conveying portion 9B in the stored state relative to the vehicle body.

[0083] When the receiving device 20 is in the storage position, the upper end portion of the receiving device 20 is located at the same or substantially the same height as the upper end portion of the support frame 21 (specifically, the upper end portion of the front and rear frame members 22). Alternatively, when the receiving device 20 is in the storage position, the upper end portion of the receiving device 20 may also be located at a position lower than the upper end portion of the support frame 21 (specifically, the upper end portion of the front and rear frame members 22).

[0084] The front and rear frame members 22 and the longitudinal frame member 23 are supported on the left side portion of the seating portion 5. In other words, the seating portion 5 is provided in a state biased to the right side of the vehicle body center relative to the vehicle body, and the front and rear frame members 22 are supported at the center end portion in the left - right direction of the vehicle body of the seating portion 5. Moreover, when the receiving device 20 is in the use position, it is located on the left side of the vehicle body relative to the seating portion 5. The front portion of the front and rear frame members 22 extends in the horizontal and front - rear directions. The front portion of the front and rear frame members 22 overlaps with the laterally conveying portion 9B in the stored state in a side view of the vehicle body (refer to Figure 1 ).

[0085] The front and rear frame member 22 has a rod-shaped portion 22a extending in the front-rear direction, a gusset member 22b at the front end portion, and a gusset member 22c at the rear end portion. The gusset member 22b is welded to the front end portion of the rod-shaped portion 22a. The gusset member 22c is welded to the rear end portion of the rod-shaped portion 22a. The front-rear intermediate portion of the rod-shaped portion 22a is bent. The bottom surface portion of the gusset member 22c is bolted to the upper surface portion of the rear box 40. In other words, the front and rear frame member 22 is supported on the upper portion of the rear box 40. Thus, the rear portion of the rod-shaped portion 22a is inclined backward and downward. That is, the rod-shaped portion 22a extends in the horizontal direction or substantially horizontal direction from the longitudinal frame member 23, and is inclined backward and downward at the rear portion. In other words, the rear portion of the rod-shaped portion 22a is erected in a forward-inclined posture on the left side portion at the rear of the riding portion 5. In addition, the rear portion of the rod-shaped portion 22a is inclined backward and downward, and is inclined so as to be located more on the right side of the body as it is closer to the front side in plan view. Thus, interference between the rod-shaped portion 22a and the roof 41 is avoided.

[0086] The front portion extending in the horizontal direction in the rod-shaped portion 22a and the gusset member 22b do not overlap the roof piece 41 in the covered state in plan view of the body. In addition, the upper portion of the longitudinal frame member 23, the swing support frame 25, and the fulcrum member 26 do not overlap the covered roof 41 in plan view of the body. The lower portion of the longitudinal frame member 23 and the lateral frame member 24 are located on the lower side compared to the roof 41 at the low position Lp. In addition, the portion of the support frame 21 that overlaps the roof 41 at the covered position in plan view of the body does not interfere with the movement locus when the height of the roof 41 is at the low position Lp and the movement locus when the height of the roof 41 is at the high position Hp.

[0087] The longitudinal frame member 23 has a rod-shaped portion 23a extending vertically, a gusset member 23b at the upper end portion, and an angle member 23c at the lower end portion. The angle member 23c is welded to the lower end portion of the rod-shaped portion 23a. The gusset member 23b is welded to the upper end portion of the rod-shaped portion 23a. The left side surface portion of the angle member 23c that extends in the front-rear direction on the left side of the body is bolted to the left side portion of the front portion of the side plate 13. In other words, the longitudinal frame member 23 is supported on the left side portion of the riding portion 5 (the left and right center side end portion of the body of the riding portion 5). The rod-shaped portion 23a is erected in a posture inclined so as to be located more on the front side of the body as it is closer to the upper side (forward-inclined posture). Moreover, the gusset member 22b of the front and rear frame member 22 is bolted to the gusset member 23b of the longitudinal frame member 23. At this time, the lower surface portion of the gusset member 22b abuts against the upper surface portion of the gusset member 23b.

[0088] The left side portion on the left side of the body of the angular member 23c extends vertically up and down and extends front and back. A triangular portion is formed in this left side portion. The trailing edge portion of this triangular portion is welded across the up and down to the rod-shaped portion 23a. That is, the longitudinal frame member 23 is inclined so that the upper side is more located on the front side of the body, and the angular member 23c is formed so that the front and back width is wider the lower side is in the side view of the body. The distance between the front end portion and the rear end portion of the angular member 23c is longer the lower side is. Thereby, the rigidity of the rod-shaped portion 23a is improved.

[0089] In plan view, the angular member 23c is bent to form an L shape. The front end portion of the angular member 23c that is bent to form an L shape in plan view extends from the bent portion to the right side of the body. The front end portion of the angular member 23c has a front face portion facing forward. This front end portion extends vertically up and down and extends left and right.

[0090] In addition, a flat surface portion in the horizontal direction is formed in the upper portion of the angular member 23c. This flat surface portion is formed to be quadrilateral in plan view and is connected to the upper end portions of the front end portion of the angular member 23c that is bent to form an L shape in plan view and the left side portion respectively. The flat surface portion in this horizontal direction extends front and back and extends left and right. The angular member 23c is bent to form an L shape in plan view, and the side portion on the left side of the body of the angular member 23c is formed to be triangular in the side view of the body, and a flat surface portion that connects the front end portion and the left side portion respectively is provided in the upper portion of the angular member 23c. Thereby, the whole of the angular member 23c is formed in a box shape, and the overall rigidity of the angular member 23c is improved. As a result, the rigidity of the rod-shaped portion 23a is improved.

[0091] In this way, the angular member 23c that strengthens the longitudinal frame member 23 is provided at the lower end portion of the longitudinal frame member 23. It should be noted that the angular member 23c may be provided in the lower portion of the longitudinal frame member 23, which is a portion above the lower end portion of the longitudinal frame member 23.

[0092] The rod-shaped portion 23a of the longitudinal frame member 23 and the rear portions of the rod-shaped portions 22a of the front and rear frame members 22 are erected side by side in the front and back direction of the body. Thereby, the front portion of the rod-shaped portion 22a of the front and rear frame members 22 extends in the front and back direction of the body.

[0093] The lateral frame member 24 is provided with: a rod-shaped portion 24a; an armrest frame portion 24b for passengers getting on and off through the boarding and alighting opening 5A; a gusset plate member 24c at the right end of the machine body; and a flat plate member 24d at the left end of the machine body. The rod-shaped portion 24a extends along the lateral direction of the machine body when viewed from above the machine body. In addition, the rod-shaped portion 24a is formed in an L shape when viewed from the front and back of the machine body. The rod-shaped portion 24a extends across the left and right ends of the front plate 12 and extends downward from the right end portion. The left end portion of the rod-shaped portion 24a is welded to the flat plate member 24d.

[0094] The flat plate member 24d of the lateral frame member 24 is bolted to the front portion of the angle member 23c of the longitudinal frame member 23. That is, the longitudinal frame member 23 and the lateral frame member 24 are connected to each other at the flat surface portion. Thereby, the longitudinal frame member 23 and the lateral frame member 24 are firmly connected with a simple structure. That is, flat surface portions are respectively formed on the angle member 23c and the flat plate member 24d, and the angle member 23c and the flat plate member 24d are connected to each other with their respective flat surface portions facing each other.

[0095] The gusset plate member 24c is formed by bending a flat plate member. The upper end portion of the gusset plate member 24c is bent into an L shape when viewed from the front and back of the machine body. The gusset plate member 24c is connected to the rod-shaped portion 24a and the armrest frame portion 24b at the right end portion of the lateral frame member 24 respectively. An upper surface portion is formed at the upper end portion of the gusset plate member 24c. The right end portion of the rod-shaped portion 24a is welded to the upper surface portion of the gusset plate member 24c. In addition, the armrest frame portion 24b is welded to the gusset plate member 24c. Thereby, the armrest frame portion 24b is provided at the right end portion of the lateral frame member 24.

[0096] The armrest frame portion 24b is connected to the lateral outer end portion of the front plate 12 in the lateral direction of the machine body. That is, the right end portion of the lateral frame member 24 is supported at the lateral outer end portion of the front plate 12 of the seating portion 5 and is adjacent to the boarding and alighting opening 5A of the seating portion 5.

[0097] In this way, the lateral frame member 24 is respectively connected to the lower portion of the longitudinal frame member 23 of the front and rear frame members 22 and the lateral outer end portion of the front plate 12 in the lateral direction of the machine body and extends along the left and right directions of the machine body. Thereby, the front and rear frame members 22 and the longitudinal frame member 23 are firmly supported by the lateral frame member 24.

[0098] The lateral frame member 24 is located on the front side compared with the steering operation lever 16. In addition, the lateral frame member 24 is located on the lower side compared with the upper end portion of the steering operation lever 16. Therefore, when the passenger sitting on the seat 11 monitors the field in front of the machine body, it is easy to confirm the field without paying attention to the lateral frame member 24.

[0099] In addition, the irradiation unit 32 is supported by the gusset member 24c. The irradiation unit 32 irradiates the periphery of the front right part of the machine body. In addition, the irradiation unit 32 can swing around the vertical axis Y2. Therefore, for example, the operator turns the irradiation unit 32 backward, whereby the irradiation unit 32 can irradiate the periphery of the right side part of the seating part 5. That is to say, the irradiation unit 32 is supported by the gusset member 24c so as to be able to swing back and forth, and can irradiate the front of the machine body and the periphery of the boarding and alighting port 5A. When the irradiation unit 32 irradiates the front of the machine body, the right end part of the machine body of the lateral frame member 24 is located on the laterally outer side of the machine body compared with the irradiation unit 32. Therefore, the lateral frame member 24 also serves as a protection member for protecting the irradiation unit 32.

[0100] The automatic travel operation unit 31 is bolted to the lateral frame member 24. In other words, the automatic travel operation unit 31 is supported by the lateral frame member 24. Although not shown, the combine harvester of the present embodiment has a control device for performing automatic travel and automatic steering. The automatic travel operation unit 31 receives a manual operation for outputting an instruction to the control device. The automatic travel operation unit 31 includes a plurality of buttons related to automatic steering and automatic travel. Therefore, for example, the rider operates the automatic travel operation unit 31, whereby the combine harvester (work vehicle) performs automatic steering or automatic travel. It should be noted that the control device may also be configured to perform at least one of automatic travel and automatic steering.

[0101] The automatic travel operation unit 31 is arranged at a position on the laterally outer side and the front side of the machine body compared with the steering lever 16. The automatic travel operation unit 31 does not overlap with the canopy 41 in the overhead view of the machine body when in the covering position. The automatic travel operation unit 31 and the irradiation unit 32 overlap in the overhead view of the machine body.

[0102] 〔Regarding the swing support structure and position holding structure of the receiving device〕

[0103] Based on Figures 6 to 8 , the swing support structure and position holding structure of the receiving device 20 will be described. The fulcrum member 26 swingably supports the swing support frame 25. The fulcrum member 26 has a shaft hole, and the rotation pin of the swing support frame 25 is inserted through the shaft hole. Thus, the swing support frame 25 swings around the horizontal axis X1 of the rotation pin.

[0104] The swing support frame 25 has a rod-shaped portion 25a, a plate portion 25b, and a bracket portion 25c. The plate portion 25b is welded to one end portion of the rod-shaped portion 25a. The bracket portion 25c is welded to the other end portion of the rod-shaped portion 25a. The receiving device 20 is bolted to the flat surface portion of the plate portion 25b. When the position of the receiving device 20 is the storage position, the flat surface portion of the plate portion 25b faces forward. In addition, when the position of the receiving device 20 is the use position, the flat surface portion of the plate portion 25b faces upward.

[0105] The rotating pin of the swing support frame 25 is welded to the bracket portion 25c. The swing operation mechanism 27 is connected between the welded portion of the rod-shaped portion 25a in the bracket portion 25c and the welded portion of the rotating pin. The swing operation mechanism 27 includes a leaf spring portion 27a, a handle support portion 27b, and an operation handle 27c. One end portion of the leaf spring portion 27a is bolted to the bracket portion 25c, and the other end portion of the leaf spring portion 27a is bolted to the handle support portion 27b. Further, an operation handle 27c is connected to the free end portion of the handle support portion 27b. Thus, the receiving device 20, the swing support frame 25, and the swing operation mechanism 27 swing integrally. The operation handle 27c extends toward the left-right center side of the seating portion 5 with respect to the swing support frame 25 and the fulcrum member 26.

[0106] The operation handle 27c swings integrally with the receiving device 20 about the swing axis of the receiving device 20, i.e., the horizontal axis X1. For example, when the rider swings the operation handle 27c in the Figure 6 counterclockwise direction as shown, the receiving device 20 and the swing support frame 25 swing upward, and the position of the receiving device 20 becomes the use position. When the receiving device 20 is in the use position, the operation handle 27c is located directly below or substantially directly below the horizontal axis X1 when viewed in the axial direction of the horizontal axis X1.

[0107] In addition, for example, when the rider swings the operation handle 27c in the Figure 6 clockwise direction as shown, the receiving device 20 and the swing support frame 25 swing downward, and the position of the receiving device 20 becomes the storage position. When the receiving device 20 is in the storage position, the operation handle 27c is at the same or substantially the same height with respect to the horizontal axis X1.

[0108] In the present embodiment, a locking member 28 for holding the receiving device 20 in the storage position and the use position respectively is provided. The locking member 28 is bolted to the right side surface of the gusset member 23b of the longitudinal frame member 23.

[0109] The locking member 28 includes a support surface 28a, a first locking portion 28b, a second locking portion 28c, and a surface 28d. The support surface 28a is formed in a flat shape and abuts against the right side surface of the gusset member 23b of the longitudinal frame member 23. The first locking portion 28b protrudes toward the right side of the machine body (the side opposite to the side where the gusset member 23b is located) from the upper rear portion of the support surface 28a. The first locking portion 28b has a flat surface extending in the horizontal direction. The second locking portion 28c protrudes toward the right side of the machine body (the side opposite to the side where the gusset member 23b is located) from the lower front portion of the support surface 28a. The second locking portion 28c has a flat surface extending in the vertical direction. The surface 28d extends across the first locking portion 28b and the second locking portion 28c.

[0110] The leaf spring portion 27a and the handle support portion 27b are formed in a flat plate shape. As Figure 7 and Figure 8 shown, the leaf spring portion 27a and the handle support portion 27b are located between the support surface portion 28a and the surface portion 28d in a front view and a top view. The leaf spring portion 27a is interposed between the operation handle 27c and a holding mechanism LK (described later).

[0111] A first hole portion 28h is formed near the first locking portion 28b in the surface portion 28d. In addition, a second hole portion 28i is formed near the second locking portion 28c in the surface portion 28d. The first hole portion 28h is adjacent to the lower side of the first locking portion 28b. In addition, the second hole portion 28i is adjacent to the rear side of the second locking portion 28c. The phase difference between the first hole portion 28h and the second hole portion 28i with respect to the horizontal axis core X1 is 90 degrees or approximately 90 degrees (for example, 89 to 91 degrees).

[0112] The portion of the handle support portion 27b between the connecting portion with respect to the leaf spring portion 27a and the connecting portion with respect to the operation handle 27c is provided with an engagement pin 27d. The engagement pin 27d protrudes from the handle support portion 27b toward the right side of the body. Moreover, the engagement pin 27d can be selectively inserted (engaged) into the first hole portion 28h and the second hole portion 28i, respectively. The engagement pin 27d, the first hole portion 28h, and the second hole portion 28i are the holding mechanism LK. The holding mechanism LK holds the swing support frame 25 in a state where the position of the receiving device 20 is in the storage position and in a state where the position of the receiving device 20 is in the use position, respectively. That is, the first hole portion 28h engages with the engagement pin 27d in order to hold the position of the receiving device 20 in the storage position. In addition, the second hole portion 28i engages with the engagement pin 27d in order to hold the position of the receiving device 20 in the use position. The leaf spring portion 27a biases the holding mechanism LK toward the position holding state.

[0113] When the position of the receiving device 20 is in the storage position, at least one of the leaf spring portion 27a and the handle support portion 27b abuts against the first locking portion 28b, and the engagement pin 27d is inserted (engaged) into the first hole portion 28h. At this time, the engagement pin 27d is biased by the leaf spring portion 27a in the direction of being inserted (engaged) into the first hole portion 28h. Thereby, the swing support frame 25 cannot swing, and the position of the receiving device 20 is held in the storage position. In other words, when the engagement pin 27d engages with the first hole portion 28h, the swing support frame 25 is held at the position where the receiving device 20 is in the storage position.

[0114] When the position of the receiving device 20 is the use position, at least one of the leaf spring portion 27a and the handle support portion 27b abuts against the second locking portion 28c, and the engaging pin 27d is inserted (engaged) into the second hole portion 28i. At this time, the engaging pin 27d is biased by the leaf spring portion 27a in the direction of being inserted (engaged) into the second hole portion 28i. Thereby, the swing support frame 25 cannot swing, and the position of the receiving device 20 is held at the use position. In other words, when the engaging pin 27d is engaged with the second hole portion 28i, the swing support frame 25 is held at the position where the receiving device 20 becomes the use position.

[0115] When changing the position of the receiving device 20 from the storage position to the use position, first, the rider presses the operation handle 27c to the left side of the body. Then, the free end portion of the leaf spring portion 27a elastically deforms to the left side of the body, and the handle support portion 27b and the operation handle 27c are displaced to the left side of the body. Thereby, the engaging pin 27d is disengaged from the first hole portion 28h. Next, the rider swings the operation handle 27c forward. At this time, the free end portion of the leaf spring portion 27a remains in the state of being elastically deformed to the left side of the body. At this time, the engaging pin 27d may also slide in contact with the left side surface of the surface portion 28d.

[0116] Then, after the position of the receiving device 20 is at the use position, at least one of the leaf spring portion 27a and the handle support portion 27b abuts against the second locking portion 28c. Thereby, the Figure 6 swing of the swing support frame 25 in the counterclockwise direction is restricted. In addition, the engaging pin 27d is inserted into the second hole portion 28i by the biasing force of the leaf spring portion 27a. Thereby, the Figure 6 swing of the swing support frame 25 in the clockwise direction is restricted. That is, the holding mechanism LK is configured such that after the change operation of changing the position of the receiving device 20 from the storage position to the use position is completed and the receiving device 20 is at the use position, the engaging pin 27d is engaged with the second hole portion 28i by the biasing force of the leaf spring portion 27a.

[0117] When changing the position of the receiving device 20 from the use position to the storage position, first, the rider presses the operation handle 27c to the left side of the body. Then, the free end portion of the leaf spring portion 27a elastically deforms to the left side of the body, and the handle support portion 27b and the operation handle 27c are displaced to the left side of the body. Thereby, the engaging pin 27d is disengaged from the second hole portion 28i. Next, the rider swings the operation handle 27c backward. At this time, the free end portion of the leaf spring portion 27a remains in the state of being elastically deformed to the left side of the body. At this time, the engaging pin 27d may also slide in contact with the left side surface of the surface portion 28d.

[0118] Then, after the position of the receiving device 20 is at the storage position, at least one of the leaf spring portion 27a and the handle support portion 27b abuts against the first locking portion 28b. Thereby, the Figure 6The swing support frame 25 in [the above] swings in the clockwise direction. In addition, the engagement pin 27d is inserted into the first hole portion 28h by the biasing force of the leaf spring portion 27a. Thereby, the Figure 6 swing of the swing support frame 25 in the counterclockwise direction in [the above] is restricted. That is, the holding mechanism LK is configured such that after the change operation of changing the position of the receiving device 20 from the use position to the storage position is completed and the receiving device 20 is located at the storage position, the engagement pin 27d is engaged with the first hole portion 28h by the biasing force of the leaf spring portion 27a.

[0119] According to this structure, the leaf spring portion 27a biases the holding mechanism LK to hold the position of the receiving device 20.

[0120] In this way, in the present embodiment, the operation handle 27c is configured such that the direction of the position change operation of the receiving device 20 is different from the direction of the switching operation of the holding mechanism LK. Thereby, by operating the operation handle 27c, it is possible to change the position between the storage position and the use position of the receiving device 20, and to switch between the position holding state and the position holding release state of the holding mechanism LK. The rider can release the position holding of the receiving device 20 only by moving the operation handle 27c laterally, and can switch the position of the receiving device 20 to the storage position and the use position only by moving the operation handle 27c in the front-rear direction. That is, according to the present embodiment, only by a series of continuous operations of the rider on the operation handle 27c, it is possible to change the position, hold the position, and release the position holding of the receiving device 20. That is, the operation handle 27c receives a release operation for overcoming the biasing force of the leaf spring portion 27a to release the position holding of the holding mechanism LK, and a change operation for changing the position of the receiving device 20 to the storage position and the use position, respectively.

[0121] 〔Another Embodiment〕

[0122] The present invention is not limited to the structure illustrated in the above embodiment. Hereinafter, another representative embodiment of the present invention will be illustrated.

[0123] (1) The cover portion 41A may also be configured by an arch structure, for example. In this case, a structure in which an outer peripheral frame is provided along the outer periphery of the ceiling 41 can be considered, but the outer peripheral frame may also be made of resin. In addition, the frame portion 41B may be made of carbon fiber reinforced plastic, or may be made of a composite material (composite) of carbon fiber reinforced plastic and metal.

[0124] (2) The ceiling 41 may also be a structure in which the position is changed to the first position and the second position not by, for example, the telescopic strut 42 but by a swing mechanism. That is, the position changing mechanism of the present invention is not limited to the telescopic strut 42, and may also be a swing mechanism that swings up and down.

[0125] (3) In the above-described embodiment, the movement locus (the area surrounded by the free end locus Rb and the vertical axis Y1) when the top cover 41 moves across the covering position and the non-covering position does not overlap with the receiving device 20 when viewed from above the body. Not limited to this embodiment, when the top cover 41 moves across the covering position and the non-covering position, if the top cover 41 and the receiving device 20 are vertically displaced without contact, it is also possible that the movement locus overlaps with the receiving device 20 when viewed from above the body.

[0126] (4) The swing support frame 25 may also be a non-swinging structure. For example, a structure having a sliding mechanism that supports the receiving device 20 and can be telescopically extended and retracted vertically may be used instead of the swing support frame 25. That is to say, it may also be a structure in which the position of the receiving device 20 is separately changed to the storage position and the use position by sliding movement.

[0127] (5) In the above-described embodiment, the receiving device 20 is configured to be able to change from the use position to the storage position by swinging the swing support frame 25 forward. Not limited to this embodiment, for example, the receiving device 20 may also be configured to be able to change from the use position to the storage position by swinging the swing support frame 25 backward. Or, the swing support frame 25 may be a structure that swings about an axis in the front-rear direction, for example. For example, the receiving device 20 may also be configured to be able to change from the use position to the storage position by swinging the swing support frame 25 to the side where the seating portion 5 is located in the left-right direction. In addition, depending on the structure that does not abut against the lateral conveying portion 9B or other devices, etc., the receiving device 20 may also be configured to be able to change from the use position to the storage position by swinging the swing support frame 25 to the side opposite to the side where the seating portion 5 is located in the left-right direction.

[0128] (6) In the above-described embodiment, when the top cover 41 is in the second position, the upper end portion of the top cover 41 is located at a position higher than the upper end portion of the receiving device 20. Not limited to this embodiment, for example, when the top cover 41 is in the second position, the upper end portion of the top cover 41 may also be located at the same or substantially the same height as the upper end portion of the receiving device 20. Also, when the top cover 41 is in the second position, the upper end portion of the top cover 41 may also be located at a position lower than the upper end portion of the receiving device 20.

[0129] (7) The seating portion 5 is offset to one side of the left or right with respect to the center of the body, and the receiving device 20 may be located on the other side of the left or right with respect to the seating portion 5 when in the use position. Therefore, the seating portion 5 may also be configured to be offset to the left with respect to the center of the body, and the receiving device 20 is located on the right with respect to the seating portion 5 when in the use position.

[0130] It should be noted that the structures disclosed in the above embodiments (including other embodiments, the same hereinafter) can be combined and applied with the structures disclosed in other embodiments as long as there is no contradiction. In addition, the embodiments disclosed in this specification are illustrative, and the embodiments of the present invention are not limited thereto, and can be appropriately changed within the scope not departing from the purpose of the present invention.

[0131] Industrial Applicability

[0132] The present invention is applicable to work vehicles equipped with a receiving device for receiving signals from satellites. Therefore, it is not limited to the self-unloading combine harvester illustrated in this embodiment, and can be applied to general-purpose combine harvesters, various harvesters (such as corn harvesters, sugarcane harvesters, potato harvesters, beet harvesters, carrot harvesters, etc.), tractors equipped with working devices, transplanters, fertilization management machines, self-propelled seeders, self-propelled mowers, etc.

[0133] Explanation of Reference Numerals

[0134] 5: Riding part.

[0135] 8: Grain tank.

[0136] 9: Conveying device.

[0137] 9A: Longitudinal conveying part.

[0138] 9B: Transverse conveying part.

[0139] 9C: Discharge port.

[0140] 11: Seat.

[0141] 20: Receiving device.

[0142] 21: Support frame (support part).

[0143] 25: Swing support frame (support part).

[0144] 41: Top cover.

[0145] 41A: Cover part.

[0146] 41B: Frame part.

[0147] 42: Telescopic support column (position changing mechanism).

[0148] Lp: Low position (first position).

[0149] Hp: High position (second position).

[0150] Ra: Receiving area.

Claims

1. An operation vehicle, wherein, the operation vehicle includes: a seating part for a rider to sit on; a canopy having a covering part and a frame part, the covering part covering the seating part from above, and the frame part being supported by the vehicle body and supporting the covering part in a state of overlapping the covering part when viewed from above the vehicle body; and a receiving device for receiving signals from a satellite, the canopy being configured such that the frame part is outside the range of the receiving area of the receiving device.

2. The operation vehicle according to claim 1, wherein, the operation vehicle includes a position changing mechanism that supports the frame part and allows the canopy to change its position across a preset first position and a preset second position that is above the first position, the second position being set such that the frame part is in a region below the lower limit boundary of the receiving area.

3. The operation vehicle according to claim 2, wherein, when the canopy is in the second position, the upper end part of the canopy is in a position above the upper end part of the receiving device.

4. The operation vehicle according to claim 2 or 3, wherein, the seating part includes a seat for a rider to sit on, the position changing mechanism being configured to be able to change the position of the canopy to a covering position that overlaps the seat when viewed from above the vehicle body and a non-covering position that does not overlap the seat when viewed from above the vehicle body, the movement trajectory when the canopy moves across the covering position and the non-covering position not overlapping the receiving device when viewed from above the vehicle body.

5. The operation vehicle according to claim 4, wherein, the operation vehicle includes a support part that supports the receiving device, the part of the support part that overlaps the canopy in the covering position when viewed from above the vehicle body not interfering with either the movement trajectory when the height of the canopy is at the first position or the movement trajectory when the height of the canopy is at the second position.

6. The operation vehicle according to any one of claims 1 to 5, wherein, the covering part is made of resin, the frame part is made of metal.

7. The operation vehicle according to any one of claims 1 to 6, wherein, the receiving device is configured to be able to change its position across a preset storage position and a use position that is above the storage position.

8. The operation vehicle according to claim 7, wherein, the operation vehicle includes a support part that supports the receiving device and can change the receiving device to the storage position and the use position, the receiving device, when in the storage position, being at the same or substantially the same height as the upper end part of the support part, or at a position below the upper end part of the support part.

9. The operation vehicle according to claim 7 or 8, wherein, the receiving device, when in the use position, being in a position in front of the frame part.

10. The operation vehicle according to any one of claims 7 to 9, wherein, the receiving device, when in the use position, not overlapping the canopy when viewed from above the vehicle body.

11. The work vehicle according to any one of claims 7 to 10, wherein, when the receiving device is in the use position, the whole or substantially the whole of the receiving device is located at a position frontward of the canopy.

12. The work vehicle according to any one of claims 7 to 11, wherein, the seating part is biased to one side of the left or right with respect to the center of the machine body, when the receiving device is in the use position, the receiving device is located on the other side of the left or right with respect to the seating part.

13. The work vehicle according to any one of claims 7 to 12, wherein, the work vehicle is provided with a conveying device having a longitudinal conveying part and a lateral conveying part. The longitudinal conveying part longitudinally conveys the grains stored in a grain tank storing grains, and the lateral conveying part is connected to the upper end part of the longitudinal conveying part and has a discharge port, laterally conveys the grains from the longitudinal conveying part and discharges them from the discharge port. The lateral conveying part is configured to be able to move up and down and rotate left and right, and can extend outward from the machine body from the storage state where it is stored in a starting position straddling the central part of the machine body when viewed from above the machine body to discharge grains. when the receiving device is in the use position, the receiving device does not overlap with the lateral conveying part in the storage state when viewed from above the machine body.

14. The work vehicle according to claim 13, wherein, the receiving device is configured to be able to change its position from the use position to the storage position by swinging in the forward tilting direction, and when in the storage position, the receiving device is located at the rear side of the machine body compared with the lateral conveying part in the storage state.

15. The work vehicle according to claim 13 or 14, wherein, when the receiving device is in the storage position, the whole of the receiving device is at the same or substantially the same height as the upper end part of the lateral conveying part in the storage state, or the whole of the receiving device is located at a lower side compared with the upper end part of the lateral conveying part in the storage state.

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