Combine

Abstract

To provide a combine configured to include a feeder for conveying the grain culm reaped by a reaping part and supplying to a threshing part, in which a safety of a worker who takes on a maintenance work on the threshing part and the like can be improved.SOLUTION: A combine 1 includes: a cabin 16 covering a driver's seat 15; a feeder 30 provided on a machine center side in a right-left direction of the cabin 16, having a feeder house 35 and a conveyor for conveying grain culm provided inside the feeder house 35, and conveying the grain culm reaped by a reaping part 3 and supplying to a thresher part 7; and a support frame 100 provided above a lateral side part on a machine center O1 side among the right-left lateral side parts of the cabin 16.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a combine harvester equipped with a feeder that transports grain stalks harvested in a harvesting section and supplies them to a threshing section. [Background technology]

[0002] Conventionally, there is a combine harvester equipped with a feeder, which is a conveying device that conveys culms harvested by a harvesting section and supplies them to a threshing section. The feeder is configured with a conveyor for conveying culms provided in a feeder house as a housing. In a combine harvester equipped with a feeder, for example, when performing maintenance work on the threshing section, the upper surface of the feeder house is used as a scaffold, and the work is performed while the worker stands on the feeder house.

[0003] Meanwhile, among work vehicles such as combine harvesters, there are known ones that are equipped with antenna units for receiving position information from satellites, etc. (For example, see Patent Document 1.) Patent Document 1 discloses a positioning unit that includes, as an antenna unit, a receiving device such as a Global Navigation Satellite System (GNSS) receiver that receives radio waves related to position information from positioning satellites, a computing device that calculates position data based on the radio waves received by the receiving device, and a wireless communication device that transmits the position data calculated by the computing device, and that houses these devices in a case.

[0004] In the configuration disclosed in Patent Document 1, the positioning unit is disposed on the upper part of the side of the cabin covering the driver's section, and is supported by a support frame provided on the side of the driver's seat toward the center of the aircraft. Specifically, the support frame is provided on the left part of the cabin roof, which is the upper part of the left side part of the cabin, and the case of the positioning unit is supported on this support frame. The antenna unit disposed near the cabin roof in this manner is subject to maintenance by an operator. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6688545 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention aims to provide a combine harvester that is equipped with a feeder that transports grain stalks harvested in the harvesting section and supplies them to the threshing section, and that can improve the safety of workers performing maintenance work on the threshing section, etc. [Means for solving the problem]

[0007] The combine harvester of the present invention comprises a cabin covering the operating section, a feeder arranged toward the center of the body in the left-right direction from the cabin, which has a feeder house and a conveyor for transporting grain stalks arranged within the feeder house, and which transports the grain stalks harvested in the harvesting section and supplies them to the threshing section, and a support frame arranged on the upper part of the left and right side sections of the cabin that is closer to the center of the body.

[0008] A combine harvester according to another aspect of the present invention is the combine harvester described above, further comprising an antenna unit supported by the support frame.

[0009] A combine harvester according to another aspect of the present invention is a combine harvester in which the antenna unit is supported relative to a front portion of the support frame.

[0010] A combine harvester according to another aspect of the present invention is the combine harvester described above, further comprising a reinforcing frame for supporting the support frame relative to the cabin.

[0011] In another aspect of the combine of the present invention, the support frame has an extending frame portion extending laterally from the side portion of the cabin toward the center of the body, and the extending frame portion is provided with a locking portion used to hang the cabin. Effect of the Invention

[0012] According to the present invention, in a configuration equipped with a feeder that transports the stalks harvested by the harvesting section and supplies them to the threshing section, the safety of workers performing maintenance work on the threshing section, etc. can be improved. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a left side view of a combine harvester according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is a right side view of a combine harvester according to a first embodiment of the present invention. [Diagram 3] FIG. 1 is a plan view of a combine harvester according to a first embodiment of the present invention. [Figure 4] FIG. 2 is a left side view showing the configuration of the feeder and its surroundings according to the first embodiment of the present invention. [Diagram 5] FIG. 2 is a left side view of the cabin according to the first embodiment of the present invention. [Figure 6] 1 is a front view of a cabin according to a first embodiment of the present invention. FIG. [Figure 7] 1 is a plan view of a cabin according to a first embodiment of the present invention. FIG. [Figure 8] 1 is a left side view showing an antenna unit and its supporting structure according to a first embodiment of the present invention. FIG. [Figure 9] 1 is a front view showing an antenna unit and its supporting structure according to a first embodiment of the present invention. [Figure 10] FIG. 2 is a plan view showing a support structure of the antenna unit according to the first embodiment of the present invention. [Figure 11] FIG. 2 is a bottom perspective view showing the antenna unit and its supporting structure according to the first embodiment of the present invention. [Figure 12] 3 is a plan view showing the configuration of a left front support pillar of the cabin according to the first embodiment of the present invention and a fixing structure of a support frame relative to the left front support pillar. FIG. [Figure 13] 1 is an exploded left side view showing an antenna unit mounting structure according to a first embodiment of the present invention. [Figure 14] FIG. 11 is a plan view showing a support structure of an antenna unit according to a second embodiment of the present invention. [Figure 15] FIG. 11 is a left side view showing a support structure of an antenna unit according to a second embodiment of the present invention. [Figure 16] FIG. 11 is a front view showing a support structure of an antenna unit according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] [First embodiment] A first embodiment of the present invention will be described. First, the overall configuration of a combine harvester 1 according to this embodiment will be described with reference to Fig. 1 to Fig. 4. In the following description, the left side (lower side in Fig. 3) and the right side (upper side in Fig. 3) facing the front of the combine harvester 1 are respectively the left side and the right side of the combine harvester 1.

[0015] As shown in Figures 1 and 2, the combine harvester 1 according to this embodiment is a normal type combine harvester that rakes in harvested crops from a field into the machine body, threshes, sorts, stores the grains, and can be transported outside the machine as needed. The combine harvester 1 has a self-propelled traveling body 2 and a reaping unit 3 provided at the front end of the traveling body 2. The reaping unit 3 is configured as a reaping device that harvests and collects unharvested stalks of rice, wheat, etc., and is attached to the traveling body 2 so that it can be raised and lowered.

[0016] The traveling machine body 2 includes a traveling section 4 configured as a crawler-type traveling device having a pair of left and right crawler sections 5, 5. A machine body frame 6 is installed between the left and right crawler sections 5, 5. Each crawler section 5 has a plurality of rotating bodies including a driving sprocket 5a provided at the front end and a tension roller 5b provided at the rear end of the crawler section 5, and a track 5c wound around these rotating bodies. The driving sprocket 5a is driven and rotated by the transmission of power from an engine 25, which is a driving source provided in the combine harvester 1.

[0017] On the left side of the machine frame 6, there are provided a threshing section 7 which threshes the stalks cut and supplied by the reaping section 3, and a sorting section 8 which sorts the grains threshed by the threshing section 7. The threshing section 7 and the sorting section 8 are arranged with the threshing section 7 on the upper level and the sorting section 8 on the lower level.

[0018] On the machine frame 6, to the right of the threshing section 7 and the sorting section 8, there is provided a grain storage section 9 having a grain tank 10 for storing grains (clean grains) sorted by the sorting section 8. A lower discharge conveyor is provided in the grain tank 10 for transporting the stored grains toward the discharge port of the grain tank 10. A vertical transport conveyor 12 is provided upright in the vertical direction so as to communicate with the discharge port of the grain tank 10. A grain discharge conveyor 13 as a discharge auger is connected to the upper end of the vertical transport conveyor 12. The grain discharge conveyor 13 is provided so as to be rotatable in the horizontal direction and to be swingable up and down around a horizontal axis. The grains in the grain tank 10 are transported by these conveyors, and are discharged from a husk inlet 14 provided at the tip of the grain discharge conveyor 13 into a truck bed, a container, or the like.

[0019] Further, a driver's section 15, in which an operator sits, is provided on the machine frame 6 at a position forward of the grain storage section 9, that is, at a position on the front right side of the machine frame 6. The driver's section 15 is covered by a cabin 16. The driver's section 15 is provided with various operating tools such as a driver's seat 17, a control handle 18 disposed in front of the driver's seat 17, and a main speed change lever 21. The operating tools such as the main speed change lever 21 are disposed on a lever column 24 provided on the left side of the driver's seat 17 (see FIG. 6).

[0020] An engine 25 serving as a drive source is provided behind the grain storage section 9 on the traveling body 2. The engine 25 is a diesel engine, and is equipped with a diesel particulate filter (DPF) serving as an exhaust gas purification device.

[0021] The reaping unit 3 has a feeder 30, a grain header (platform) 31, a cutting blade device 32, a pair of left and right grass dividing bodies 33, 33, and a raking reel 34.

[0022] The feeder 30 is a conveying device that conveys the stalks harvested by the harvesting section 3 and supplies them to the threshing section 7. The feeder 30 has a feeder house 35 as a housing, and a conveyor 36 for conveying the stalks provided within the feeder house 35. The feeder 30 is provided with a rear end opening of the feeder house 35, which is configured as a substantially rectangular cylinder with the longitudinal direction in a plan view as the front-rear direction, communicating with the front handling port 7a of the threshing section 7.

[0023] The feeder 30 is located to the left of the cabin 16, and is provided on the vehicle body center side (inner side in the left and right direction) with respect to the cabin 16. As shown in Fig. 3, the cabin 16 covering the driver's seat 17 is provided at a position toward the right side of the vehicle body center O1 which is the tread center of the left and right crawler units 5. In such an arrangement of the cabin 16, the feeder 30 is provided on the side closer to the vehicle body center O1 in the left and right direction, that is, on the left side with respect to the cabin 16.

[0024] The grain header 31 is configured in a horizontally elongated bucket shape, and is connected to the front side of the feeder 30 so as to communicate with the front end opening of the feeder house 35. A raking auger (platform auger) 37 is provided inside the grain header 31. The raking auger 37 is axially mounted so as to be rotatable with the left-right direction as the rotation axis direction.

[0025] The cutting blade device 32 is provided at the front lower edge of the grain header 31 and is configured like a clipper. A pair of left and right grass dividing bodies 33, 33 are provided so as to protrude forward from the left and right sides of the front of the grain header 31. The raking reel 34 is a reel with a tine bar, and is provided at a position above the raking auger 37 in front of the raking reel 34, supported rotatably with the left and right direction as the rotation axis. The raking reel 34 acts continuously on the pod-bearing part of the culm while rotating, and raking the pod-bearing part of the culm into the raking auger 37. The power of the engine 25 transmitted via various transmission mechanisms is used to operate each part of the reaping unit 3.

[0026] The conveyor 36 in the feeder house 35 has a reaping input shaft (feeder house conveyor shaft) 38, which is provided in front of the threshing section 7 and has an axial direction in the left-right direction as a drive shaft supporting the feeding end side of the conveyor 36. The rear end of the feeder 30 is supported by the reaping input shaft 38 so as to be rotatable with the axial direction of the rotation axis also in the left-right direction. A lifting cylinder 39 is provided between the underside of the feeder house 35 and the machine frame 6.

[0027] As shown in Fig. 4, the feeder house 35 has left and right side surfaces 91, a bottom surface 92, and a top surface 93, which together form a cylindrical body with openings at both the front and rear ends. The top surface 93 has a rear top surface 93a and a front top surface 93b, both of which are flat and inclined downward from the front, and have a curved surface shape with the front and rear center portions as the apex in a side view. The rear top surface 93a has a gentle downward slope relative to the front top surface 93b.

[0028] The conveyor 36 is a chain conveyor having chains 95 arranged parallel to each other on both the left and right sides inside the feeder house 35, and a plurality of plates 96 installed between the left and right chains 95. In the conveyor 36, the rear portion of the chain 95 is wound around sprockets 97 arranged on both the left and right sides of the reaping input shaft 38 so as to rotate integrally with the reaping input shaft 38, and the front portion of the chain 95 is wound around a cylindrical front drum 98 arranged at the front end inside the feeder house 35. The front drum 98 is rotatably supported by a conveyor driven shaft 98a whose axial direction is in the left-right direction.

[0029] With this configuration, the conveyor 36 is driven by the rotation of the harvesting input shaft 38 counterclockwise (left rotation direction) when viewed from the left side (see arrow A1 in Figure 4), and the stalks taken into the feeder house 35 by the raking auger 37 are hooked onto the plate 96 and transported diagonally upward and rearward. The stalks transported by the conveyor 36 are supplied from the feeder house 35 to the threshing section 7 through the handling port 7a (see Figure 1).

[0030] The threshing section 7 and the sorting section 8 will now be described. The threshing section 7 has a threshing drum 41 arranged in a threshing chamber with a threshing port 7a opening to the front, and a receiving net 42 arranged below the threshing drum 41. The threshing drum 41 is rotatably supported by a threshing drum shaft whose axial direction is in the front-to-rear direction. A number of dust-transport valves (not shown) are provided above the threshing drum 41 with adjustable angles to adjust the conveying speed (retention time) of the threshing grains in the threshing chamber. The receiving net 42 allows the grains to leak out, and is arranged along the outer peripheral surface of the lower part of the threshing drum 41.

[0031] The sorting section 8 has a swaying sorting plate 43 as a swaying section arranged below the receiving net 42, a first conveyor 45, a second conveyor 46, and a winnower 47.

[0032] The oscillating sorting plate 43 has components for gravity sorting, such as a feed pan, a chaff sieve arranged behind the feed pan to adjust the amount of grain leakage, and a grain sieve arranged below the chaff sieve. The first conveyor 45 is arranged in a first trough extending in the width direction of the machine so as to collect the first grains. The second conveyor 46 is arranged in a second trough extending in the width direction of the machine at a position behind the first conveyor 45 so as to collect the second grains. The winnower 47 blows sorting air from the front lower to the rear upper to the oscillating sorting plate 43.

[0033] A return conveyor 48 is provided on the left side of the machine body where the threshing section 7 and sorting section 8 are located. The return conveyor 48 is connected to the second conveyor 46 with its lower end located near the second conveyor 46, and its upper end located near the front end of the threshing drum 41, extending in an upward sloping manner. An upper conveyor (not shown) is provided at the upper end of the return conveyor 48, extending in the left-right direction in front of the threshing drum 41.

[0034] The combine harvester 1 having the above-mentioned configuration raises the cutting section 3 to a desired height above the ground (the cutting height of the culms, which are the harvested crop) in a farm field by raising and lowering the feeder 30 supported by the cutting input shaft 38, changes from a non-working state to a working state, and travels in this state using the traveling body 2. As a result, the combine harvester 1 separates the harvested crop into cutting targets and non-cutting targets using the left and right dividing bodies 33, 33, and cuts the pod-bearing parts of the culms with the cutting blade device 32 while raking in the pod-bearing parts on the tip side of the culms to be cut with the raking reel 34.

[0035] The pod-bearing portions of the stalks cut at the desired harvesting position are scraped into the grain header 31 by the rotating scraping auger 37 and collected near the entrance of the feeder house 35 in the center of the left and right sides of the grain header 31. They are then transported by a conveyor 36 inside the feeder house 35 through the feeder house 35 and fed into the handling opening 7a, and supplied to the threshing section 7.

[0036] The stalks supplied to the threshing section 7 are transported rearward by the rotating threshing drum 41 and threshed mainly between the threshing drum 41 and the receiving net 42. Threshed grains, such as grains smaller than the mesh size of the receiving net 42, leak through the receiving net 42. Straw chips, etc. that do not leak through the receiving net 42 are discharged to the field from a dust outlet provided at the rear of the sorting section 8 by the transporting action of the threshing drum 41. Meanwhile, the grains (threshed grains) that have been threshed in the threshing section 7 and leaked through the receiving net 42 are sorted by the gravity sorting action of the oscillating sorting plate 43 and the wind sorting action of the winnower 47 into refined grains, etc. (first grains), a mixture of grains, such as grains with stalks, and straw (second grains), and straw chips, etc., and removed.

[0037] The first grains that fall from the oscillating sorting plate 43 after sorting in the sorting section 8 are transported to the grain tank 10 by the first conveyor 45 and a lifting conveyor (not shown) connected thereto. The second grains are returned to the threshing start end of the threshing drum 41 by the second conveyor 46 and the return conveyor 48 and upper conveyor connected thereto, and are threshed again. Straw dust and the like are discharged into the field from a dust outlet provided at the rear of the sorting section 8.

[0038] The configuration of the cabin 16 will be described with reference to Figures 5 to 7. The cabin 16 has a front portion 51, a rear portion 52, a left side wall portion 53, a right side wall portion 54, a roof portion 55 forming a ceiling portion, and a floor portion 56, and these portions form a generally box-like shape as a whole.

[0039] The front portion 51 of the cabin 16 is configured as a transparent window portion entirely by a rectangular transparent plate 57 made of glass, acrylic resin, polycarbonate resin, etc. The front portion 51 has a surface portion that is inclined slightly forward as a whole, with the middle portion in the left-right direction being a flat surface portion and both left and right side portions being curved surfaces.

[0040] A left front support portion 61 is provided on the front edge of the left side wall portion 53 of the cabin 16, and a left rear support portion 62 is provided on the rear edge. The left front support portion 61 and the left rear support portion 62 are provided to extend over substantially the entire left side wall portion 53 in the vertical direction. The left front support portion 61 extends so as to follow the forward inclination of the front portion 51 in a side view. The left rear support portion 62 has an upper portion aligned in the vertical direction and a lower portion inclined backward.

[0041] In the left side wall 53, the lower part of the portion between the front and rear support members 61, 62 is a lower side surface portion 63, which is a sheet metal portion composed of a steel plate or the like. The upper part of the portion between the support members 61, 62 is an upper left window portion 64. The upper left window portion 64 is formed by attaching a rectangular transparent plate 65 of glass or the like to a frame-like portion formed including the upper parts of the front and rear support members 61, 62. The transparent plate 65 is provided so as to be openable and closable so as to open outward from the bottom side by means of hinge portions 65a provided at two positions, front and rear, on the upper side of the upper left window portion 64. In addition, the portion between the lower side surface portion 63 and the upper left window portion 64 between the support members 61, 62 is a lower left window portion 66 formed of a transparent plate 67 of glass or the like.

[0042] A rear upper plate 68 is provided on the left side wall 53, rear of the upper part of the left rear support column 62. The rear upper plate 68 forms an upper rear corner of the left side wall 53. The front edge of the rear upper plate 68 is aligned with the upper part of the left rear support column 62 that extends in the up-down direction.

[0043] A door 70, which is an opening and closing door for getting on and off, is provided on the right side wall 54 of the cabin 16 (see FIG. 2). The door 70 is supported rotatably with respect to the frame portion of the cabin 16 by a hinge portion provided on the front portion of the right side wall 54 so as to open outward from the rear side.

[0044] The roof portion 55 of the cabin 16 has a generally rectangular outer shape with the longitudinal direction being the front-to-rear direction in a plan view. The front edge of the roof portion 55 protrudes forward like an eave from the upper end of the front surface portion 51. A plurality of lighting units 58 are provided side by side on the front end surface portion of the roof portion 55.

[0045] The roof portion 55 has a flat outer shape and is hollow. The roof portion 55 has a lower panel (not shown) that forms the base of the roof portion 55, and a roof panel 75 that is a cover member provided on the upper side of the lower panel, and these panels form a hollow portion. The roof panel 75 has a flat upper surface portion 75a, and left and right side portions 75b that are bent downward on both the left and right sides of the upper surface portion 75a.

[0046] The left side surface portion 75b of the roof panel 75 covers the upper edge portion of the left side wall portion 53 from the left, and the right side surface portion 75b of the roof panel 75 covers the upper edge portion of the right side wall portion 54 from the right. An indoor unit of an air conditioning device equipped in the combine harvester 1 is provided inside the roof portion 55.

[0047] The floor 56 of the cabin 16 forms a horizontal floor surface 76 in front of and below the driver's seat 17. A driver's seat support 77 forming a horizontal seat support surface 78 is provided on the rear side of the floor surface 76 at a position higher than the floor surface 76. The driver's seat 17 is installed on the driver's seat support 77.

[0048] In the cabin 16 having the above-mentioned configuration, the left side portion of the cabin 16 is formed by the left side wall portion 53 and the left portion of the roof portion 55. Moreover, the right side portion of the cabin 16 is formed by the right side wall portion 54 and the right portion of the roof portion 55. Hereinafter, in the cabin 16, the left side portion including the left side wall portion 53 and the left portion of the roof portion 55 is referred to as the cabin left side portion 79.

[0049] The combine harvester 1 according to this embodiment includes an antenna unit 80 for receiving position information from a satellite. The antenna unit 80 is disposed in a state supported by a predetermined support member on the cabin 16 so as to be located near the upper left side of the cabin left side surface portion 79.

[0050] The antenna unit 80 has a box-like shape that is substantially rectangular in plan view, and is provided with its longitudinal direction as the front-rear direction. The antenna unit 80 is provided at substantially the same height as the roof portion 55 in the vertical direction. Specifically, the antenna unit 80 is provided so that its vertical dimension is substantially the same as the vertical dimension of the side portion 75b of the roof panel 75, and substantially the entire vertical dimension is located within the height range of the side portion 75b of the roof panel 75. Therefore, the antenna unit 80 has a height position of the upper end of the case 84 substantially the same as the height position of the upper surface portion 75a of the roof panel 75.

[0051] Approximately the front half of the antenna unit 80 is located forward of the upper end of the left front support portion 61 in the front-rear direction. Specifically, the rear end of the antenna unit 80 is located in front of the upper left window portion 64, and the front end is located between the upper end of the front portion 51 and the front end of the roof portion 55 in the front-rear direction. The antenna unit 80 has a dimension approximately 1 / 3 of the overall length of the roof portion 55 in the front-rear direction, and is provided so as to be located at the front left side of the roof portion 55 (see FIG. 7).

[0052] The antenna unit 80 is provided such that, in the left-right direction, its right side surface is located to the left of the left side surface portion 75b of the roof panel 75. In this manner, the antenna unit 80 is disposed to the left of the front part of the roof portion 55 with respect to the cabin 16.

[0053] According to such an arrangement of the antenna unit 80, in a configuration in which the cabin 16 is provided at the right front part of the body of the combine harvester 1, the antenna unit 80 is located at approximately the center of the entire combine harvester 1 in the left-right direction (see FIG. 3). In addition, since the antenna unit 80 is located to the left of the front part of the roof part 55, the light distribution by the lighting part 58 and the field of view from inside the cabin 16 are not obstructed by the antenna unit 80.

[0054] Further, a space is formed between the cabin 16 and the grain discharge conveyor 13 in the stored state to the left of the cabin 16, and the antenna unit 80 is disposed by utilizing this space. The grain discharge conveyor 13 rotates from the stored state to the right or upward of the machine body. Here, in order to prevent the grain discharge conveyor 13 from interfering with the cabin 16 or the antenna unit 80, a regulated area is provided for the rotation (turning) of the grain discharge conveyor 13 in the operation control of the grain discharge conveyor 13.

[0055] The antenna unit 80 is configured as a positioning unit for receiving radio waves from positioning satellites and measuring the position of the combine harvester 1. The antenna unit 80 includes a receiving device 81 as a receiving section, an inertial navigation system 82 as a computing section, a wireless communication device 83 as a communication section, and a case 84 for accommodating these devices. The antenna unit 80 configures an automatic steering system for the combine harvester 1.

[0056] The receiving device 81 receives radio waves from positioning satellites, converts the received radio waves into signals, and transmits them to the inertial navigation system 82. The receiving device 81 is, for example, a GNSS receiver (GNSS antenna) that receives radio waves from a group of GNSS satellites, or a GPS receiver (GPS antenna) that receives radio waves from Global Positioning System (GPS) satellites.

[0057] The inertial navigation system 82 measures the three-axis gyro and the acceleration in three directions to calculate attitude and orientation data. The inertial navigation system 82 also calculates position data based on the signal transmitted from the receiving device 81. The inertial navigation system 82 functions as a calculation device that calculates position data based on the position information from the receiving device 81. For example, by mounting a GNSS receiver on the inertial navigation system 82, the reliability of the attitude and orientation data calculated by the inertial navigation system 82 is improved.

[0058] By equipping the antenna unit 80 with an inertial navigation system 82, it is possible to utilize inertial navigation, which calculates and determines positioning speed, distance traveled, etc. based on acceleration in three directions detected by the inertial navigation system 82, even in situations where radio waves from positioning satellites cannot be received due to bad weather, radio interference, etc.

[0059] The wireless communication device 83 transmits the position data and attitude direction data calculated by the inertial navigation system 82 to the outside by wireless communication. The wireless communication device 83 is, for example, a data communication device using a wireless LAN (Local Area Network) or mobile communication. The data transmitted from the wireless communication device 83 is received by, for example, a mobile terminal carried by the operator or an ECU (Electronic Control Unit) of the combine harvester 1, and is used to confirm the position in the field and the attitude of the combine harvester 1 (tilts forward, backward, left and right, etc.).

[0060] Case 84 has a lower case body 85 forming the lower part of case 84 and an upper case body 86 forming the upper part of case 84, and these case bodies form a storage space and also form the outer shape of antenna unit 80. Case 84 has a relatively flat box-like outer shape with the front-to-rear direction as the longitudinal direction due to lower case body 85 and upper case body 86. Lower case body 85 and upper case body 86 are members made of, for example, resin.

[0061] The lower case body 85 is a box-shaped member with an open top, and has a horizontal bottom surface 85a and a peripheral wall 85b including front, rear, left and right side surfaces and forming a rectangular opening with its upper edge (see FIG. 9). The upper case body 86 is a lid-shaped part that covers the opening of the lower case body 85 from above. The upper case body 86 has rectangular edges formed by its front, rear, left and right sides, and is provided in a state where these edges are fitted into the rectangular opening of the lower case body 85. The upper case body 86 is fitted into the lower case body 85 with the lower opening edge overlapping the upper opening edge of the lower case body 85 from the outside. Both case bodies are fixed to each other at multiple points by fasteners 87 (see FIG. 9), such as bolts, that pass through the fitting portions of each other.

[0062] Inside the case 84, from front to rear, the wireless communication device 83, the receiving device 81, and the inertial navigation system 82 are arranged in this order at a specified interval. These devices are fixed to a mounting plate (not shown) provided on the upper side of the bottom portion 85a of the lower case body 85 inside the case 84 by fasteners such as bolts.

[0063] As described above, the antenna unit 80 is configured as an integrated unit that houses the receiving device 81, the inertial navigation system 82, and the wireless communication device 83 inside the case 84. This provides the antenna unit 80 with excellent mountability to the aircraft body and high versatility for use with a variety of models.

[0064] In addition, with regard to the arrangement of the antenna unit 80, the antenna unit 80 is located in the approximate center of the combine harvester 1, thereby reducing errors when acquiring position information and attitude and direction information of the combine harvester 1, and good positioning accuracy can be obtained. In addition, the antenna unit 80 is provided at approximately the same height as the roof portion 55 of the cabin 16, which is a high position in the combine harvester 1, and good positioning accuracy can be obtained.

[0065] The positioning data (position data and attitude direction data) acquired by the antenna unit 80 is used to control the autonomous combine harvester 1, which performs work while autonomously traveling along a preset route. The position data is used, for example, to determine whether the combine harvester 1 is traveling along a predetermined route. The attitude direction data is used, for example, to confirm the traveling state of the combine harvester 1 and the state of the field by recognizing the inclination of the combine harvester 1. Also, an operator can send real-time instructions to the combine harvester 1 by receiving transmission data from the wireless communication device 83 on a mobile terminal or the like.

[0066] The configuration of the antenna unit 80 is not limited to the present embodiment. For example, the configuration of the antenna unit 80 may be such that the inertial navigation system 82 is omitted by providing the receiving device 81 with a function as a calculation unit that calculates position data from the position information received by the receiving device 81.

[0067] The support structure of the antenna unit 80 will be described with reference to Fig. 5 to Fig. 13. The combine harvester 1 is provided with a support frame 100 as an antenna support member that supports the antenna unit 80. The support frame 100 is a frame portion having a predetermined bent or curved shape, and is provided on the left side surface portion 79 of the cabin.

[0068] The support frame 100 is configured to extend in the front-rear direction. The support frame 100 has a main frame portion 101 that forms the majority of the support frame 100, a forearm portion 102 that extends in the left-right direction, a front support bracket 103 that supports a front portion of the main frame portion 101 relative to the cabin 16, and a rear support bracket 104 that supports a rear portion of the main frame portion 101 relative to the cabin 16.

[0069] The main frame 101 is made of a round pipe-shaped member bent into a substantially L-shape, and is provided horizontally so as to form a substantially L-shape in plan view. The pipe-shaped member constituting the main frame 101 has an outer diameter (thickness) that allows an operator to easily grasp it. The main frame 101 has, as a substantially L-shaped portion, a front-rear extending side portion 111 extending in the front-rear direction, a rear side portion 112 that forms the rear side of the support frame 100 with the left-right direction as the axial direction, and a curved portion 113 that forms a corner portion formed by the front-rear extending side portion 111 and the rear side portion 112.

[0070] In a left side view, the main frame portion 101 is located near the lower edge of the lower edge of the left side surface portion 75b of the roof panel 75, and is provided along the upper edge of the left upper window portion 64. The main frame portion 101 has its front end, i.e., the front end of the front-to-rear extending side portion 111, located slightly forward of the transparent plate 57 of the front portion 51 of the cabin 16. The main frame portion 101 has a front arm portion 102 forming its rear end located immediately behind the upper end of the left rear support portion 62.

[0071] The main frame portion 101 has a rear edge portion 112 fixed to and supported by the left side wall portion 53 of the cabin 16 via a rear support bracket 104. The rear support bracket 104 is fixed to a front upper portion of the rear upper plate 68 that constitutes the left side wall portion 53, and supports the rear edge portion 112 against the rear upper plate 68. The rear support bracket 104 is a bent plate-like member that is approximately L-shaped in a plan view, and has, as surfaces that form the approximately L shape, a fixing surface portion 104a that is fixed to the rear upper plate 68 and a support surface portion 104b that supports the rear edge portion 112.

[0072] The fixing surface portion 104a is a portion with a plate thickness direction in the left-right direction and a substantially rectangular portion with a longitudinal direction in the up-down direction. The rear support bracket 104 is fixed to the rear upper plate 68 at two positions, top and bottom, by bolts 115 and nuts 116 with the fixing surface portion 104a overlapping the rear upper plate 68 from the left side. The bolt 115 penetrates the fixing surface portion 104a and the rear upper plate 68 from the left side and is screwed into the nut 116 located on the right side of the rear upper plate 68 (see FIG. 10). The fixing portions by the bolt 115 are provided at the upper end and the lower end of the fixing surface portion 104a.

[0073] The support surface portion 104b is a portion bent leftward from the front edge of the fixing surface portion 104a, and forms a protruding piece portion protruding leftward from the rear upper plate 68. The support surface portion 104b is a portion whose plate thickness direction is the front-rear direction, and is a substantially triangular or trapezoidal portion whose vertical dimension gradually decreases from the right side to the left side. The rear side 112 of the main frame portion 101 is fixed to the rear side of the upper part of the support surface portion 104b by welding or the like. Approximately the right half of the support surface portion 104b is fixed in the extension direction of the rear side portion 112.

[0074] The end face on the tip side (right side) of the rear side portion 112 is in contact with the fixing surface portion 104a and is fixed to the fixing surface portion 104a by welding or the like. An opening 104c is formed through the corner formed by the fixing surface portion 104a and the support surface portion 104b to avoid interference with the tip end of the rear side portion 112 (see FIG. 11).

[0075] The main frame portion 101 has a front portion of the front-rear extending side portion 111 fixed to and supported by the left side wall portion 53 of the cabin 16 via a front support bracket 103. The front support bracket 103 is fixed to an upper end portion of a left front support column portion 61 constituting the left side wall portion 53, and supports the front-rear extending side portion 111 against the left front support column portion 61.

[0076] 12, the left front support portion 61 has a support body portion 121 extending along the forward inclination of the front portion 51 of the cabin 16, and an outer support portion 122 provided on the outer side (left side) of the support body portion 121. The support body portion 121 and the outer support portion 122 are fixed to each other to form an integral left front support portion 61.

[0077] The support body 121 is made of a square pipe-like member having a rectangular cross section, and has a front surface 121a, a rear surface 121b, a left side surface 121c, and a right side surface 121d. The outer support body 122 is made of a channel steel-like member having a substantially U-shaped cross section, and is fixed to the left side surface 121c of the support body 121 by welding or the like, with the open side facing the inside of the left and right (right side). The outer support body 122 closes the open part on the right side with the support body 121 so as to form a hollow part together with the left side surface 121c of the support body 121. The outer support body 122 has a front surface 122a, a rear surface 122b, and a left side surface 122c.

[0078] The front support bracket 103 is a bent plate-like member that is approximately L-shaped when viewed in a plane, and has, as approximately L-shaped surfaces, a fixed surface portion 103a that is fixed to the outer support portion 122 and a support surface portion 103b that supports the front / rear extension portion 111.

[0079] The fixing surface portion 103a is a portion with the plate thickness direction in the left-right direction and is a substantially rectangular portion with the longitudinal direction in the vertical direction. The front support bracket 103 is provided with an inclination with respect to the vertical direction so that the longitudinal direction of the fixing surface portion 103a is aligned with the forward inclination of the outer support portion 122. The front support bracket 103 is fixed to the outer support portion 122 at two points, upper and lower, by bolts 123 and nuts 124 with the fixing surface portion 103a overlapping the upper end portion of the outer support portion 122 from the left side (see FIG. 12). The bolt 123 penetrates the fixing surface portion 103a and the left side surface portion 122c of the outer support portion 122 from the left side, and is screwed into the nut portion 124 located on the right side of the left side surface portion 122c (inside the outer support portion 122). The fixing portions by the bolts 123 are provided near the upper and lower ends of the fixing surface portion 103a.

[0080] The support surface portion 103b is a portion bent leftward from the front edge of the fixed surface portion 103a, and forms a protruding piece that protrudes leftward from the outer support portion 122. The support surface portion 103b is a portion whose plate thickness direction is in the front-to-rear direction, and is a generally triangular or trapezoidal portion whose dimension in the up-down direction gradually decreases from the right side to the left side.

[0081] In detail, the supporting surface portion 103b has, as its outer peripheral side portions, an upper side portion that is slightly inclined downward from the right side to the left side, a substantially horizontal lower right side portion, a lower inclined side portion that is connected to the left side of the lower right side portion and is inclined upward from the right side to the left side, and a tip side portion that forms the edge portion of the protruding side of the supporting surface portion 103b. The front-rear extending side portion 111 of the main frame portion 101 is fixed to the tip side portion of the supporting surface portion 103b by welding or the like. A substantially semicircular recess 103d is formed in the upper and lower intermediate portions of the tip side portion of the supporting surface portion 103b, into which the right part of the front-rear extending side portion 111 is fitted (see FIG. 9).

[0082] The front arm portion 102 is configured from a straight round pipe-shaped member, and is provided in a manner of being bridged between the front / rear extending side portion 111 of the main frame portion 101 and the fixing surface portion 103a of the front support bracket 103. The front arm portion 102 is fixed to the rear side of the upper part of the support surface portion 103b by welding or the like.

[0083] The left end of the forearm portion 102 is fixed to the front-rear extending side portion 111 of the main frame portion 101 by welding or the like. A recess 102a into which the right portion of the front-rear extending side portion 111 fits is formed at the tip of the forearm portion 102 (see FIG. 9). The recess 102a is formed in a substantially semicircular arc shape in front view so as to fit along the shape of the outer circumferential surface of the front-rear extending side portion 111.

[0084] The right end face of the forearm section 102 is in contact with the fixing surface section 103a and is fixed to the fixing surface section 103a by welding or the like. An opening 103c is formed through the corner formed by the fixing surface section 103a and the support surface section 103b to avoid interference with the right end section of the forearm section 102 (see FIG. 9).

[0085] In the support frame 100, an L-shaped reinforcing frame portion 105 is provided between the main frame portion 101 and the front support bracket 103. The reinforcing frame portion 105 is composed of a bent rod-shaped member bent into an L shape, and has a vertical side portion 105a along the up-down direction and a horizontal side portion 105b along the left-right direction.

[0086] The reinforcing frame portion 105 has a vertical side portion 105a extending downward in the front-rear direction from a fixed portion of the forearm portion 102 in the main frame portion 101, and a horizontal side portion 105b positioned rearward of the lower portion of the support surface portion 103b. The reinforcing frame portion 105 is provided with an upper end portion of the vertical side portion 105a fixed to the main frame portion 101 by welding or the like, and a right portion of the horizontal side portion 105b fixed to the front support bracket 103 by welding or the like.

[0087] The main frame portion 101 has a front portion of the front-rear extending side portion 111 serving as a front extending portion 111a extending forward from a support portion for the cabin 16 by the front support bracket 103. The front extending portion 111a has a length that is approximately 1 / 6 to 1 / 5 of the entire length of the front-rear extending side portion 111.

[0088] The support frame 100 having the above-mentioned configuration, in plan view, forms a frame portion having a frame shape that follows a substantially rectangular outer shape with the front-to-rear direction as the longitudinal direction and the right side as the open side, by the front side defined by the front arm portion 102 and the front support bracket 103, the rear side defined by the rear side portion 112 of the main frame portion 101, and the left side defined by the front-to-rear extending side portion 111. The support frame 100, together with the left edge portion of the roof panel 75, forms a rectangular closed space portion 120 with the front-to-rear direction as the longitudinal direction in plan view.

[0089] As described above, the antenna unit 80 is supported by the support frame 100 which is fixedly supported by the cabin 16. The antenna unit 80 is supported in a fixed state by support brackets 130 provided at two locations, front and rear, on the front-rear extending side portion 111 of the main frame portion 101 of the support frame 100.

[0090] Of the two support brackets 130, the front support bracket 130A located on the front side is provided on the front end of the front-rear extending side 111, i.e., the front end of the front extending portion 111a, with respect to the support frame 100. The rear support bracket 130B located on the rear side of the two support brackets 130 is provided in the front part of the front-rear extending side 111, rear of the fixed portion of the front arm portion 102.

[0091] The support bracket 130 is a longitudinal member formed by bending a plate-like member, and is provided on the upper side of the front-rear extending side portion 111 so as to be perpendicular to the axial direction of the front-rear extending side portion 111 in a plan view with the longitudinal direction being the left-right direction. The right end portion of the support bracket 130 is fixed to the front-rear extending side portion 111, and extends leftward from the front-rear extending side portion 111 to form an arm-like portion. The two support brackets 130 are disposed symmetrically or approximately symmetrically about the fixing portion of the front arm portion 102 on the front-rear extending side portion 111 in the front-rear direction (see FIG. 10).

[0092] The support bracket 130 has front and rear side portions 131, 131 parallel to each other and a horizontal upper surface portion 133, and these surfaces form a substantially U-shape with the lower side open in a side view. In the rear support bracket 130B, a semicircular cutout portion 134 for fitting the front and rear extension side portion 111 is formed on the lower side of the right end portion of the front and rear side portion 131. Similarly, a cutout portion 134 is formed on the rear side side portion 131 of the front support bracket 130A. In addition, the front support bracket 130A has an extension plate portion 135 that extends the right portion of the front side portion 131 downward, and the extension plate portion 135 covers the front end surface of the front and rear extension side portion 111 from the front side.

[0093] The support bracket 130 is fixed to the front-rear extending side 111 by welding or the like with the front-rear extending side 111 fitted into the cutout 134. In the front support bracket 130A, the front end of the front-rear extending side 111 is fixed to the rear side of the front side portion 131 by welding or the like. The support bracket 130 has a longitudinal dimension that is shorter than the widthwise (left-right) dimension of the case 84 of the antenna unit 80 and longer than half of that dimension.

[0094] The support bracket 130 has a generally triangular shape in which the lower edge of the portion extending leftward from the front-rear extending side 111 to the front-rear side portion 131 is a downwardly inclined side portion 136 that is inclined upward from the right side to the left side, and the vertical dimension gradually decreases from the right side to the left side. In the support bracket 130, the upper surface portion 133 becomes a support surface portion that receives the attachment of the case 84 of the antenna unit 80.

[0095] The case 84 of the antenna unit 80 is fixed to the upper surface 133 of the front and rear support brackets 130 by fixing bolts 137. Fixing portions by the fixing bolts 137 are provided at two locations, the left end and the left and right central portions, in each support bracket 130. For this reason, holes 133a for passing the fixing bolts 137 are formed in two locations, the left end and the left and right central portions, in the upper surface 133 of the support bracket 130 (see FIG. 10). In this way, the antenna unit 80 is fixed to the front and rear support brackets 130 by the fixing bolts 137 at four locations in total, two locations each.

[0096] In the antenna unit 80, a female screw portion 138 into which a fixing bolt 137 is screwed is provided inside the case 84. The female screw portion 138 is configured of a tubular member having a screw hole, and is fixed to the case 84 so that the screw hole faces the bottom surface portion 85a of the lower case body 85 of the case 84 and opens. The female screw portion 138 is provided in four locations corresponding to the fixing portions by the fixing bolt 137. The fixing bolt 137 penetrates the upper surface portion 133 of the support bracket 130 from below and is screwed into the female screw portion 138, thereby fixing the case 84 to the support bracket 130 (see FIG. 13).

[0097] In this manner, the antenna unit 80 is provided in a state supported by front and rear support brackets 130 fixed to the main frame portion 101 of the support frame 100. The front support bracket 130A is located below the front part of the antenna unit 80, and the rear support bracket 130B is located below the rear part of the antenna unit 80. In the antenna unit 80, the front end part of the case 84 is located forward of the front support bracket 130A, and the rear end part of the case 84 is located rearward of the rear support bracket 130B.

[0098] 10, in the left-right direction, the left end of the support bracket 130 is located to the right of the left end of the case 84 of the antenna unit 80, and the right end protrudes rightward from the case 84. The antenna unit 80 is provided so that the right edge of the case 84 approximately coincides with the left end of the front-rear extension side 111 in a plan view. The antenna unit 80 is located on the left front side of the support frame 100, and is provided so that the case 84 does not overlap with the rectangular closed space 120 formed by the support frame 100 together with the roof panel 75 in a plan view (see FIG. 10).

[0099] In the support structure of the antenna unit 80 as described above, the antenna unit 80 is supported by the front part of the support frame 100. That is, as shown in Fig. 10, the front and rear support brackets 130 are provided in a portion forward of the front-rear center position C0 of the support frame 100, and the front half of the support frame 100 is used as a support portion for the antenna unit 80. The front-rear center position C0 is a center position between a position C1 of the front end face of the front-rear extension side portion 111 forming the front end of the support frame 100 and a position C2 of the rear edge end of the fixing surface portion 104a of the rear support bracket 104 forming the rear end of the support frame 100 in the front-rear direction.

[0100] Moreover, the antenna unit 80 is disposed so that the entire case 84 is located forward of the front-rear center position C0 in the front-rear direction. In other words, the antenna unit 80 is provided so that the rear end of the case 84 is located forward of the front-rear center position C0.

[0101] Moreover, the antenna unit 80 is disposed so that the entire case 84 overlaps the feeder house 35 in plan view (see FIG. 3). In detail, the antenna unit 80 is disposed so as to be located in the approximate center between the left and right of the front part of the feeder house 35 in plan view.

[0102] In the support frame 100, the main frame portion 101 is provided with cable clamp portions 126 at multiple locations for fastening cables (not shown) extending from the case 84 of the antenna unit 80 to the outside. The cables extending from the case 84 to the outside are, for example, aggregated cables that aggregate cables including power supply lines and signal lines connected to the respective devices of the receiving device 81, the inertial navigation system 82, and the wireless communication device 83 of the antenna unit 80 into a single cable.

[0103] The multiple cable clamps 126 are disposed at the rear of the main frame 101. The cable clamps 126 are configured by attaching a clamp member 126b having a belt-like portion whose size of a penetration portion is adjustable in accordance with the size of the cable to a horizontal plate-like stay 126a fixed to the main frame 101 by welding or the like. The multiple cable clamps 126 route the cables extending from the case 84 to the outside along the main frame 101.

[0104] In addition, in the support frame 100, the main frame portion 101 is provided with a support stay 128 that supports an auxiliary antenna 127 equipped to the combine harvester 1. The auxiliary antenna 127 is an antenna for acquiring auxiliary information such as GPS correction information in the automatic steering system of the combine harvester 1 using the antenna unit 80. The auxiliary antenna 127 is a straight rod-shaped member.

[0105] The auxiliary antenna 127 receives correction information from an independently provided antenna, a communication carrier base station of a communication carrier, or a fixed base station provided by a local government, etc., via a communication means such as an Internet line. The antenna unit 80 corrects the position information from the positioning satellite received by the receiving device 81 using the correction information received by the auxiliary antenna 127, using the inertial navigation system 82, etc., and outputs (transmits) the position information of the device using the wireless communication device 83, etc.

[0106] The auxiliary antenna 127 is supported on the rear side portion 112 of the main frame portion 101 via a support stay 128. The support stay 128 is provided by fixing a plate-shaped member to the rear side portion 112 by welding or the like at the left-right intermediate portion of the rear side portion 112 so as to protrude horizontally rearward.

[0107] A notched support recess 128a with the left side open is formed at the rear of the support stay 128. The support stay 128 serves as a mounting seat for the auxiliary antenna 127, and supports the auxiliary antenna 127 in an upright state with the lower end of the auxiliary antenna 127 fitted into the support recess 128a. The auxiliary antenna 127 is fixed to the support stay 128 by screw fastening or the like. The height of the auxiliary antenna 127 is not limited, but in this embodiment, the tip (upper end) of the auxiliary antenna 127 is positioned below the upper surface 75a of the roof panel 75.

[0108] As described above, the combine harvester 1 includes the cabin 16 that covers the driving section 15 and the feeder 30 provided to the left of the cabin 16, and includes the support frame 100 provided on the upper part of the cabin left side surface section 79 as a support section for supporting a predetermined device relative to the cabin 16. In this embodiment, the antenna unit 80 is supported on the support frame 100. In other words, the combine harvester 1 includes the antenna unit 80 that is provided in a state of being supported by the support frame 100.

[0109] The device supported by the support frame 100 is not limited to the antenna unit 80. The device supported by the support frame 100 may be, for example, a status display device such as a stacked light (indicator lamp). The status display device is a device used to notify various statuses of the machine in a combine harvester that performs work while traveling automatically, and, for example, switches the display content according to the reception status of radio waves transmitted from a GPS satellite, and notifies a person outside the machine of the reception status of the radio waves.

[0110] In a configuration in which a support frame 100 is provided for the cabin 16, a front support bracket 103 that constitutes the support frame 100 has a cabin hanging hole portion 139 as a part for hanging a hook, wire, etc. for hanging the cabin 16.

[0111] The cabin hanging hole 139 is an example of a locking portion used to hang the cabin 16. The cabin hanging hole 139 is a portion of the front support bracket 103 where a substantially rectangular opening 139a is formed penetrating the support surface portion 103b, and is provided in the substantially vertical center on the fixing surface portion 103a side (right side) which is the base side of the support surface portion 103b.

[0112] For example, when the cabin 16 is mounted on the chassis during assembly of the combine harvester 1, it is transported in a state suspended by a crane or the like. To suspend the cabin 16 by a crane or the like, a hook is hung or a wire is passed through the cabin suspension hole 139. The cabin 16 is suspended at, for example, two points. In this case, the cabin 16 is provided with an engagement portion (not shown) for a hook or the like at a position on the right rear side of the cabin 16 that is diagonally positioned in a plan view with respect to the front support bracket 103 located on the left front side of the cabin 16.

[0113] In this manner, the support frame 100 has the support surface portion 103b of the front support bracket 103 in which the cabin hanging hole portion 139 is provided. That is, the support surface portion 103b of the front support bracket 103 is an extended frame portion that extends laterally from the cabin left side portion 79, which is the side portion on the aircraft center side (left side) of the cabin 16, and this support surface portion 103b is provided with the cabin hanging hole portion 139 for hanging the cabin 16. Note that the locking portion for hanging the cabin 16 is not limited to an opening such as the cabin hanging hole portion 139, and may be, for example, a protruding portion or a hook-shaped portion.

[0114] The combine harvester 1 of this embodiment having the above-mentioned configuration is equipped with a feeder 30 that transports the stalks harvested by the harvesting section 3 and supplies them to the threshing section 7, thereby improving the safety of workers performing maintenance work on the threshing section 7, etc.

[0115] The combine harvester 1 includes a support frame 100 provided on an upper portion of the left side wall portion 53 that forms the left side portion of the cabin 16. According to this configuration, a part of the support frame 100 can be used as a handrail for an operator, so that the operator can work safely.

[0116] Specifically, as shown in FIG. 1 and FIG. 3, in the combine harvester 1 equipped with the feeder 30, for example, when the rotor cover 7c covering the upper side of the handling chamber of the threshing section 7 is opened to perform maintenance work on the threshing section 7 (for example, operating the dust valve or removing clogged stalks) or maintenance work on the antenna unit 80, the top of the upper surface part 93 (see FIG. 4) of the feeder house 35 may be used as a foothold. In this case, the worker 140 performs the work while standing on the feeder house 35, which is at a relatively high place. In such a case, the support frame 100, particularly the main frame part 101, can be used as a handrail, so that the worker 140 can work safely even at a relatively high place. In addition, by using the support frame 100 as a handrail, the worker 140 can easily change his / her position on the feeder house 35. This improves the workability on the feeder house 35.

[0117] 1, the worker 140 stands on a relatively gently inclined rear upper surface portion 93a (see FIG. 4) of the upper surface portion 93 of the feeder house 35. The support frame 100 is positioned at about waist height of the worker 140 standing on the rear upper surface portion 93a of the feeder house 35.

[0118] A ladder 141 provided on the left side of the feeder 30 is used to go up and down the upper surface 93 of the feeder house 35. The ladder 141 is provided on the base of the traveling body 2 in the vertical direction at a position to the left of the rear of the feeder house 35. The upper end of the ladder 141 is located above the upper surface 93 of the feeder house 35 and below the upper surface 7b formed by the rotor cover 7c of the threshing section 7.

[0119] When ascending or descending to or from the feeder house 35 using the ladder 141, the worker 140 can use the support frame 100 as a grip (handle). This allows the worker 140 to ascend or descend to or from the feeder house 35 safely and easily, improving safety and providing good workability.

[0120] Furthermore, the antenna unit 80 is attached to the support frame 100, and the support frame 100 is used as a frame that supports the antenna unit 80. With this configuration, the support frame 100 that supports the antenna unit 80 can be used as a handrail, so that the support frame 100 that also serves as a handrail can be realized with an inexpensive and simple configuration, and safety and workability can be improved.

[0121] Moreover, the antenna unit 80 is disposed at the front of the support frame 100. With this configuration, the rear of the support frame 100 can be made a non-supporting portion of the antenna unit 80, so that the rear of the support frame 100 can be easily used as a handrail for workers. This can improve safety and workability.

[0122] Particularly, in this embodiment, the support frame 100 is configured as a frame portion having a frame shape along a substantially rectangular outer shape with the longitudinal direction in a plan view and the right side being an open side. With such a configuration, by supporting the antenna unit 80 against the front part of the support frame 100, the frame portion having an L-shape in a plan view including the rear part of the front-rear extending side part 111 and the rear side part 112 which is the rear part of the support frame 100 can be used as a handrail part. This makes it possible to easily and sufficiently ensure the function of the support frame 100 as a handrail for the worker.

[0123] Moreover, in the support frame 100, a cabin hanging hole 139 is provided in the front support bracket 103. With this configuration, the front support bracket 103, which is a component of the support frame 100, can be used as a hanging fixture when assembling the cabin 16. This eliminates the need to provide a separate locking part for hanging the cabin 16, reducing the number of parts and simplifying the structure. Note that the cabin hanging hole 139 may be used, for example, as a part for locking a safety rope when the combine harvester 1 is mounted on or dismounted from the bed of a truck during transportation of the combine harvester 1.

[0124] Moreover, the antenna unit 80 is supported on front and rear support brackets 130 extending leftward from the support frame 100, and is disposed on the left and right outer sides (left side) of the closed space 120 so as not to overlap the closed space 120 defined by the support frame 100 in a plan view. With this configuration, it is possible to ensure a distance between the roof portion 55 and the antenna unit 80 while obtaining sufficient support strength for the antenna unit 80, and good reception can be obtained.

[0125] As shown in Fig. 9, in antenna unit 80, antenna reception range α2 is defined by a predetermined elevation angle α1 when viewed from the front. The elevation angle α1 is, for example, about 10°, in which case reception range α2 is about 160°. In order to ensure reception range α2, it is preferable that reception range α2 (see straight line L1 indicating the left end of reception range α2) on the cabin 16 side of antenna unit 80 (left side in Fig. 9) does not interfere with roof portion 55 of cabin 16.

[0126] Therefore, according to the support configuration of the antenna unit 80 by the support frame 100 and the support bracket 130, in a configuration in which the roof portion 55 and the antenna unit 80 are arranged to be at approximately the same height, the antenna unit 80 can be arranged at a position spaced apart to a certain extent from the roof portion 55. This makes it possible to prevent the reception range of the antenna from interfering with the roof portion 55, and good reception performance can be obtained at the antenna unit 80.

[0127] [Second embodiment] A second embodiment of the present invention will be described with reference to Figures 14 to 16. In the second embodiment of the present invention described below, the same names or symbols are used for configurations common to or corresponding to the first embodiment, and descriptions of overlapping contents will be omitted as appropriate.

[0128] 14 to 16, the combine harvester according to this embodiment includes a reinforcing frame 200 that supports the support frame 100A relative to the cabin 16. The support frame 100A according to this embodiment includes a frame main body 151 that forms the main body of the support frame 100A, a front support bracket 153 that supports the front end of the frame main body 151 relative to the cabin 16, and a rear support bracket 154 that supports the rear end of the frame main body 151 relative to the cabin 16.

[0129] The frame body 151 is composed of a round pipe-shaped member having a predetermined bent or curved shape. The pipe-shaped member constituting the frame body 151 has an outer diameter (thickness) that allows an operator to easily grasp it. In a left side view, the frame body 151 is located near the lower end of the lower edge of the left side portion 75b of the roof panel 75, and is horizontally provided along the upper edge of the left upper window portion 64. The front end of the frame body 151 is located forward of the transparent plate 57 of the front portion 51 of the cabin 16 and rearward of the front end of the roof portion 55. The rear end of the frame body 151 is located immediately behind the upper end of the left rear support portion 62.

[0130] The frame main body 151 is a part that has a planar shape made of a round pipe-shaped member, and has, from the front end to the rear end, a front inclined portion 161, an outer front-to-rear extension portion 162, a rear inclined portion 163, an inner front-to-rear extension portion 164, and a rear left-right extension portion 165.

[0131] The front inclined portion 161 is a portion that inclines from the right side to the left side from the rear side to the front side, and extends diagonally forward to the left from the left wall portion 53 of the cabin 16. The right end of the front inclined portion 161 becomes the front end of the frame main body 151. The inclination angle of the front inclined portion 161 with respect to the left-right direction is approximately 45°. The outer front-rear extension portion 162 is a portion whose axial direction is the front-rear direction, and extends rearward from the left end of the front inclined portion 161 to form an acute-angled corner together with the front inclined portion 161. The corner between the front inclined portion 161 and the outer front-rear extension portion 162 is a curved portion 166.

[0132] The rear inclined portion 163 is a portion inclined in the same direction as the front inclined portion 161, and extends from the rear end of the outer front-rear extension portion 162 diagonally rearward to the right so as to form an obtuse-angled corner together with the outer front-rear extension portion 162. The corner between the outer front-rear extension portion 162 and the rear inclined portion 163 is a curved portion 167. The inner front-rear extension portion 164 is a portion whose axial direction is the front-rear direction, is located inside (to the right) of the outer front-rear extension portion 162 in the left-right direction, and extends from the right end of the rear inclined portion 163 rearward to form an obtuse-angled corner together with the rear inclined portion 163. The corner between the rear inclined portion 163 and the inner front-rear extension portion 164 is a curved portion 168.

[0133] The rear left-right extension portion 165 is a portion whose axial direction is the left-right direction, and extends to the right from the rear end portion of the inner front-to-rear extension portion 164 to form a right-angled corner together with the inner front-to-rear extension portion 164. The corner between the inner front-to-rear extension portion 164 and the rear left-to-right extension portion 165 is a curved portion 169. The right end portion of the rear left-to-right extension portion 165 becomes the rear end portion of the frame main body 151.

[0134] The rear end of the frame body 151 is fixed to the rear upper plate 68 of the cabin 16 via a rear support bracket 154 in a manner similar to the fixing structure of the rear edge portion 112 of the main frame portion 101 by the rear support bracket 104 according to the first embodiment. That is, the rear support bracket 154 is a substantially L-shaped bent plate member having a fixing surface portion 154a and a support surface portion 154b, and is fixed to the rear upper plate 68 at two positions, top and bottom, by bolts 171 and nuts 172, and a right portion of the rear left and right extension portion 165 is fixed to the rear support bracket 154 by welding or the like.

[0135] The front end of the frame body 151 is fixed to the upper end of the outer support part 122 that constitutes the left front support part 61 of the cabin 16 via a front support bracket 153. The front support bracket 153 is a bent plate-shaped member, and has a fixing surface part 153a that is fixed to the outer support part 122, and a support surface part 153b that supports the front inclined part 161 of the frame body 151.

[0136] The front support bracket 153 is fixed to the outer support portion 122 at two locations, top and bottom, by bolts 173 and nuts 174 located inside the outer support portion 122, with the fixing surface portion 153a overlapping the upper end portion of the outer support portion 122 from the left side. The support surface portion 153b is a portion that is bent from the front edge of the fixing surface portion 153a toward the front left in accordance with the inclination of the front inclined portion 161, and forms a protruding piece that protrudes toward the front left from the outer support portion 122. The right portion of the front inclined portion 161 is fixed to the rear side of the support surface portion 153b by welding or the like.

[0137] The support frame 100A having the above-mentioned configuration forms a frame portion having a frame shape along a predetermined outer shape with the right side being open in a plan view by the frame main body 151. The support frame 100A forms a closed space portion 180 together with the left edge of the roof panel 75 in a plan view (see FIG. 14). The closed space portion 180 has, as an area portion in a plan view, a first area portion on the right side along an approximately rectangular outer shape with the longitudinal direction being the longitudinal direction, and a second area portion in which the closed space portion 180 is extended from the front of the first area portion to the left front side. That is, in the closed space portion 180, in the left-right direction, the area to the right of the axis S1 of the inner longitudinal extension portion 164 is the first area portion, and the area to the left of the axis S1 is the second area portion.

[0138] The outer front-rear extension part 162 forming the left edge of the frame main body 151 is positioned inside (right side) of the left end position F1 of the feeder house 35 and outside (left side) of the left-right center position F0 of the feeder house 35 in the left-right direction (see FIG. 14). Therefore, the frame main body 151 is formed so that the entire or substantially the entire closed space part 180 overlaps with the feeder house 35 in a plan view.

[0139] The reinforcement frame 200 will now be described. The cabin 16 has a left front support column 61 as a support column located on the left side (closer to the center of the aircraft), which is one of the left and right sides of the front part of the cabin 16. In this configuration, the reinforcement frame 200 is a frame portion that supports the support frame 100A relative to the left front support column 61.

[0140] The reinforcing frame 200 has a frame body 201 which forms the main body of the reinforcing frame 200 , and a support bracket 202 which supports the lower end of the frame body 201 against the cabin 16 .

[0141] The frame body 201 is composed of a straight round pipe-shaped member, and is installed between the frame body 151 of the support frame 100A and the outer support portion 122 of the cabin 16. The pipe-shaped member constituting the frame body 201 has, for example, the same or approximately the same outer diameter as the frame body 151. The frame body 201 extends diagonally upward and forward to the left from the lower end fixed to the outer support portion 122 side to the upper end fixed to the frame body 151. Therefore, the frame body 201 is inclined from the rear side to the front side from the right side to the left side in a plan view (see FIG. 14), is inclined from the rear side to the front side from the lower side to the upper side in a left side view (see FIG. 15), and is inclined from the right side to the left side from the lower side to the upper side in a front view (see FIG. 16).

[0142] The lower end of the frame main body 201 is fixed to the upper part of the outer support column 122 via a support bracket 202. The support bracket 202 is provided on the outer support column 122 at a position below the front support bracket 153 and in front of the lower part of the transparent plate 65 of the upper left window portion 64. The support bracket 202 is a bent plate-shaped member similar to the front support bracket 153, and has a fixing surface portion 202a fixed to the outer support column 122 and a support surface portion 202b that supports the lower end of the frame main body 201.

[0143] Similar to the front support bracket 153, the support bracket 202 is fixed to the outer support portion 122 at two positions, top and bottom, with bolts 175 and nuts 176 located inside the outer support portion 122, with the fixing surface portion 202a overlapping the outer support portion 122 from the left side. The support surface portion 202b is a portion bent from the front side of the fixing surface portion 202a to form a surface portion that follows the frame main body 201 in accordance with the inclination of the frame main body 201, and forms a protruding piece portion that protrudes from the outer support portion 122. The lower end portion of the frame main body 201 is fixed to the rear side of the support surface portion 202b by welding or the like.

[0144] An upper end of the frame body 201 is fixed to the vicinity of the front end of the frame body 151 of the support frame 100A by welding or the like. In detail, the upper end of the frame body 201 is fixed to a portion in front of the outer front-rear extension portion 162 of the frame body 151, below a portion on the left side of the curved portion 166.

[0145] The fixing structure (shape of a support member such as a support bracket, the presence or absence of a support member, etc.) and fixing portion of the frame body 201 to the cabin 16 and the frame body 151 are not limited to those in this embodiment. Also, the reinforcing frame 200 may have a configuration in which a plurality of frame bodies 201 are provided between the cabin 16 and the frame body 151.

[0146] As described above, the antenna unit 80 is supported by a frame configuration including the support frame 100A and the reinforcing frame 200 fixedly supported by the cabin 16. The antenna unit 80 is supported in a fixed state by support brackets 130 provided at two locations, front and rear, in the outer front-rear extension portion 162 of the frame main body 151 of the support frame 100A. The two support brackets 130 have a configuration similar to that of the rear support bracket 130B according to the first embodiment.

[0147] In the front-rear direction, the front support bracket 130 is provided near the front end of the outer front-rear extension portion 162, and the rear support bracket 130 is provided near the rear end of the outer front-rear extension portion 162. The support bracket 130 is provided above the outer front-rear extension portion 162 so as to be perpendicular to the axial direction of the outer front-rear extension portion 162 in a plan view, with the longitudinal direction being the left-right direction. The left end of the support bracket 130 is fixed to the outer front-rear extension portion 162 and extends rightward from the outer front-rear extension portion 162 to form an arm-shaped portion.

[0148] The support bracket 130 is fixed to the outer front-rear extension portion 162 by welding or the like in a state in which the outer front-rear extension portion 162 is fitted into a cutout portion 134 formed on the lower side of the left end portion of the front and rear side surface portions 131 (see FIG. 16). In this manner, the support bracket 130 according to this embodiment is provided in the left-right opposite direction to the support bracket 130 according to the first embodiment.

[0149] The case 84 of the antenna unit 80 is fixed to the front and rear support brackets 130 at four points by fixing bolts 137 which are screwed into female threads 138 provided inside the case 84 .

[0150] 14, in the left-right direction, the right end of the support bracket 130 is located to the left of the right end of the case 84 of the antenna unit 80, and the left end protrudes leftward from the case 84. In a plan view, the antenna unit 80 is provided such that the left edge of the case 84 is located near the right of the outer front-rear extension portion 162 and does not overlap with the outer front-rear extension portion 162. Therefore, in a plan view, the outer front-rear extension portion 162 exposes the entire portions of the front and rear support brackets 130 other than the fixed portions.

[0151] The positional relationship between the antenna unit 80 and the cabin 16 is the same or substantially the same as in the first embodiment. As shown in Fig. 14, in this embodiment, the antenna unit 80 is provided such that the vicinity of a right front corner of the case 84 overlaps with the front portion of the front inclined portion 161 and the vicinity of a left rear corner of the case 84 overlaps with the front portion of the rear inclined portion 163 in a plan view.

[0152] Therefore, the antenna unit 80 is disposed so that, in a plan view, substantially the entire case 84 overlaps with a second region of the closed space 180, which is a region surrounded by the front part of the front inclined portion 161, the outer front-rear extending portion 162, and the rear inclined portion 163. Moreover, the antenna unit 80 is disposed so that the case 84 does not overlap with the first region of the closed space 180 in a plan view.

[0153] In the above-described support structure for the antenna unit 80, the antenna unit 80 is supported by the front part of the support frame 100A. That is, as shown in FIG. 14, the front and rear support brackets 130 are provided in front of the front-rear center position C0 of the support frame 100A, and the front half of the support frame 100A is used as a support part for the antenna unit 80.

[0154] According to the combine harvester of this embodiment, as in the first embodiment, the safety and workability of the worker performing maintenance work on the threshing section 7, etc. can be improved. That is, according to the configuration with the support frame 100A provided on the upper part of the left side wall part 53 of the cabin 16, when the worker 140 performs maintenance work on the threshing section 7 while standing on the feeder house 35, the frame body 151 of the support frame 100A can be used as a handrail for the worker, so that the worker can work safely and the workability on the feeder house 35 can be improved.

[0155] Furthermore, by using the support frame 100A as a frame supporting the antenna unit 80, the support frame 100A supporting the antenna unit 80 can be used as a handrail, so that a support frame 100A that also serves as a handrail can be realized with an inexpensive and simple configuration, thereby improving safety and workability.

[0156] Moreover, the antenna unit 80 is disposed in the front part of the frame body 151 of the support frame 100A. With this configuration, the rear part of the frame body 151, specifically the part from the rear part of the rear inclined part 163 to the rear left and right extension part 165, becomes the part not supported by the antenna unit 80, and this part can be easily used as a handrail for the worker. This can improve the safety and workability of the worker 140.

[0157] Particularly, in this embodiment, the frame body 151 has a configuration in which the front frame portion protrudes to the left as a support portion for the antenna unit 80, with respect to the rear frame portion formed mainly by the inner front-rear extension portion 164 and the rear left-right extension portion 165. With this configuration, a working space can be secured in the rear portion on the threshing section side of the feeder house 35, where the frame body 151 can be used as a handrail without interfering with the frame body 151 in a plan view (see FIG. 14). This improves the safety and workability of the worker 140.

[0158] In addition, in the frame main body 151, the case 84 of the antenna unit 80 is arranged so as not to overlap the outer front-rear extension part 162 in a plan view, so that the outer front-rear extension part 162 and its adjacent parts in front and behind can also be used as a handrail. This makes it possible to expand the range of the frame main body 151 that can be used as a handrail (the range that can be grasped), and effectively improves the safety and workability of work on the feeder house 35.

[0159] Moreover, the combine harvester according to this embodiment includes a reinforcing frame 200 that supports the support frame 100A relative to the cabin 16. With this configuration, the support strength of the support frame 100A relative to the cabin 16 can be improved, and therefore the stability when the frame body 151 is used as a handrail can be improved.

[0160] Furthermore, in a configuration in which the antenna unit 80 is supported on the support frame 100A, the provision of the reinforcing frame 200 makes it possible to firmly and stably support the antenna unit 80. This ensures stable transmission and reception performance of the antenna unit 80, and improves its reliability as a positioning unit for the combine.

[0161] In addition, the reinforcing frame 200 is arranged to support the support frame 100A against the left front support pillar portion 61 of the cabin 16, and the reinforcing frame 200 is arranged to be located within the blind spot of the left front support pillar portion 61 from the driver seated in the driver's seat 17.

[0162] 14, the left front support portion 61 is located diagonally forward and to the left of the driver 210 in the cabin 16, and the diagonally forward and to the left of the left front support portion 61 is a blind spot for the driver 210. Therefore, the reinforcing frame 200 is provided so that its entirety or substantially its entirety is located within a blind spot range T1 defined by the left front support portion 61 for the driver 210 in a plan view.

[0163] With this configuration, for example, when performing mowing operations using the mowing unit 3, the reinforcing frame 200 does not obstruct the view of the driver 210 through the transparent plate 57 of the front portion 51 or the transparent plate 65 of the left side wall portion 53, thereby ensuring good workability.

[0164] In the support frame 100A according to this embodiment, a cabin hanging hole for hanging the cabin 16 may be provided in the front support bracket 153, similar to the front support bracket 103 according to the first embodiment. In this case, the support surface portion 153b of the front support bracket 153 becomes an extended frame portion extending laterally from the cabin left side portion 79, which is the side portion on the aircraft center side (left side) of the cabin 16, and the cabin hanging hole, which is, for example, a rectangular opening, is provided in this support surface portion 153b. According to this configuration, the front support bracket 153, which is a component of the support frame 100A, can be used as a hanging metal fitting when assembling the cabin 16, thereby reducing the number of parts and simplifying the structure.

[0165] The above-described embodiment is an example of the present invention, and the present invention is not limited to the above-described embodiment. Therefore, even if it is not the above-described embodiment, various modifications are possible according to the design, etc., as long as they do not deviate from the technical idea of ​​the present invention. In addition, the effects described in this disclosure are merely examples and are not limited, and other effects may be present.

[0166] The present technology can have the following configurations. Note that the configurations described below can be selected and combined as desired. (1) A cabin covering the driver's section; A feeder is provided on the center side of the machine body in the left-right direction with respect to the cabin, and has a feeder house and a conveyor for transporting stalks provided in the feeder house, and transports the stalks harvested in the harvesting section and supplies them to the threshing section; A support frame provided on an upper portion of the side portion on the center side of the aircraft among the left and right side portions of the cabin, combine. (2) An antenna unit is provided in a state supported by the support frame. The combine harvester described in (1) above. (3) The antenna unit is supported against a front portion of the support frame. The combine harvester described in (2) above. (4) A reinforcing frame is provided to support the support frame against the cabin. The combine harvester according to any one of (1) to (3). (5) The support frame has an extension frame portion extending laterally from a side portion of the cabin on the aircraft center side, The extension frame portion is provided with a locking portion used to hang the cabin. The combine harvester according to any one of (1) to (4) above. [Explanation of symbols]

[0167] 1. Combine Harvester 3 Reaping part 7. Threshing Department 15 Driving Department 16 Cabin 30 Feeder 35 Feeder House 36 Conveyor 53 Left side wall 79 Cabin left side 80 Antenna unit 100 Support Frame 100A Support Frame 101 Main Frame Section 103 Front support bracket 103b Support surface part (extended frame part) 139 Cabin hanging hole (locking part) 151 Frame body 200 Reinforcement Frame

Claims

1. A cabin covering the driver's section; A feeder is provided on the center side of the machine body in the left-right direction with respect to the cabin, and has a feeder house and a conveyor for transporting stalks provided in the feeder house, and transports the stalks harvested in the harvesting section and supplies them to the threshing section; A support frame provided on an upper portion of the side portion on the center side of the aircraft among the left and right side portions of the cabin, combine.

2. An antenna unit is provided in a state supported by the support frame. The combine according to claim 1.

3. The antenna unit is supported against a front portion of the support frame. The combine harvester according to claim 2.

4. A reinforcing frame is provided to support the support frame against the cabin. The combine harvester according to any one of claims 1 to 3.

5. The support frame has an extension frame portion extending laterally from a side portion of the cabin on the aircraft center side, The extension frame portion is provided with a locking portion used to hang the cabin. The combine according to claim 1.

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