Work vehicle

Abstract

To provide technology that is suitable for a work vehicle having a positioning function.SOLUTION: An exemplary work vehicle includes a vehicle body having a cabin, and a quantum compass disposed inside the cabin.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] Conventionally, work vehicles have been known that have the function of acquiring their own vehicle's location information for purposes such as automatic driving, recording of work information, or theft prevention. Positioning satellites have traditionally been used to acquire the vehicle's location information. Patent Document 1 discloses a combine harvester that is configured to detect its position by providing a receiving device capable of receiving radio waves from a GPS satellite (positioning satellite) on the top surface of the cabin, and that automatically drives to a preset position based on the signal received by the receiving device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-69836 Summary of the Invention [Problem to be solved by the invention]

[0004] In a configuration that uses satellite information to obtain the vehicle's position information, the accuracy of the acquired position information can be reduced due to the influence of the communication environment. Furthermore, the operating environment of a work vehicle is harsher than that of a normal automobile, for example, there is a lot of dust and dirt, and vibrations during operation tend to be large. In other words, when installing a positioning device on a work vehicle, it is necessary to take into account the harsh operating environment.

[0005] An object of the present invention is to provide a technology suitable for a work vehicle equipped with a positioning function. [Means for solving the problem]

[0006] An exemplary combine harvester of the present invention includes a fuselage having a cabin and a quantum compass disposed within the cabin. [Effects of the Invention]

[0007] According to the exemplary combine harvester of the present invention, the influence of the communication environment, the harsh working environment, etc. can be suppressed, and the location information of the combine harvester itself can be appropriately acquired. [Brief explanation of the drawings]

[0008] [Figure 1] Left side view showing the exterior of the combine harvester [Figure 2] Plan view showing the exterior of the combine harvester [Figure 3] A schematic perspective view showing the interior configuration of the cabin [Figure 4] FIG. 1 is a diagram for explaining a preferred arrangement of a quantum compass provided inside a cabin. [Figure 5] FIG. 1 is a longitudinal cross-sectional view showing a first embodiment of the quantum compass arrangement; [Figure 6] FIG. 10 is a longitudinal cross-sectional view showing a second embodiment of the quantum compass arrangement; [Figure 7] FIG. 10 is a longitudinal cross-sectional view showing a third embodiment of the quantum compass arrangement; [Figure 8] FIG. 10 is a longitudinal cross-sectional view showing a fourth embodiment of the quantum compass arrangement; DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0010] The work vehicle according to the embodiment of the present invention is a combine harvester. However, this is merely an example. The work vehicle may be an agricultural work machine other than a combine harvester, such as a tractor. The work vehicle may also be a work machine other than an agricultural work machine, such as a work machine for civil engineering or construction work, or a snowplow.

[0011] In addition, directions are defined as follows in this specification. First, the direction in which a combine harvester as a work vehicle travels during operation is defined as "forward," and the opposite direction is defined as "rearward." Furthermore, the right side of the combine harvester when facing the direction of travel during operation is defined as right, and the left side is defined as left. The direction perpendicular to the front-to-back and left-to-right directions of the combine harvester is defined as up-to-down. In this case, the direction of gravity is defined as down, and the opposite side is defined as up. Furthermore, the plane perpendicular to the up-to-down direction is defined as the horizontal plane, and the direction along the horizontal plane is defined as the horizontal direction. Note that the above directions are simply names used for explanation and are not intended to limit the actual positional relationships and directions.

[0012] <1. Overview of the combine> Fig. 1 is a left side view showing the exterior of the combine harvester 100. Fig. 2 is a plan view showing the exterior of the combine harvester 100. As shown in Figs. 1 and 2, the combine harvester 100 includes a body section 1, a traveling section 2, and a reaping section 3.

[0013] The body section 1 is provided above the running section 2. The body section 1 has a body frame 11. That is, the combine harvester 100 has the body frame 11 arranged above the running section 2. A threshing section 4, a sorting section 5, a storage section 6, and a control section 7 are provided on the body frame 11. That is, the body section 1 has the threshing section 4, the sorting section 5, the storage section 6, and the control section 7. The combine harvester 100 further has the threshing section 4, the sorting section 5, the storage section 6, and the control section 7.

[0014] The traveling section 2 is provided below the body frame 11 and supports the body frame 11. The reaping section 3 is provided in front of the body frame 11. While traveling on the traveling section 2, the combine harvester 100 threshes the stalks harvested by the reaping section 3 in the threshing section 4, sorts the grain in the sorting section 5, and stores it in the storage section 6. The combine harvester 100 drives the traveling section 2, reaping section 3, threshing section 4, sorting section 5, and storage section 6 using power supplied from a power section (not shown).

[0015] In this embodiment, the power unit is configured to generate power using an engine such as a diesel engine, but the power source of the power unit is not limited to an engine and may be another device such as a motor. The power unit may be located, for example, below the driver's seat 72 (see FIG. 3) described below or behind the grain tank 61 (see FIG. 1, etc.) described below. Furthermore, while the combine harvester 100 of this embodiment is a so-called normal type combine harvester, this is merely an example, and the present invention may also be applied to so-called head-feeding type combine harvesters.

[0016] The traveling unit 2 includes a pair of left and right crawlers 21. The pair of left and right crawlers 21 are provided below the machine frame 11. The crawlers 21 rotate by power generated by a power unit (not shown). The rotational drive of the left and right crawlers 21 is controlled independently to move forward, backward, and turn left and right. Note that the traveling method of the work vehicle to which the present invention is applied is not limited to the crawler method, and may be another method such as a wheel method.

[0017] The reaping unit 3 is provided in front of the traveling unit 2. The reaping unit 3 has a reel 31, a cutter 32, an auger 33, and a conveyor 34. The reel 31 rotates to guide the stalks in the field to the cutter 32. The cutter 32 cuts the stalks guided by the reel 31. The auger 33 collects the stalks cut by the cutter 32 onto the conveyor 34. The conveyor 34 transports the stalks collected by the auger 33 to the threshing unit 4.

[0018] The threshing unit 4 is located behind the reaping unit 3 and on one side of the machine body 1 in the left-right direction (the left side in this embodiment). The threshing unit 4 has a threshing drum 41 and a receiving net 42 inside. The threshing drum 41 rotates to thresh the stalks and transport them rearward. The receiving net 42 supports the stalks transported by the threshing drum 41 and drops the threshed material into the sorting unit 5.

[0019] The sorting section 5 is provided below the threshing section 4. The sorting section 5 is equipped with a oscillating sorting device 51 and a wind sorting device 52. The oscillating sorting device 51 is equipped with a oscillating sieve and separates the threshed grains that have fallen from the threshing section 4 into grains and straw chips. The wind sorting device 52 blows away impurities such as straw chips contained in the threshed grains that have been sorted by the oscillating sorting device 51. The impurities are discharged to the outside from a discharge outlet (not shown) provided behind the sorting section 5.

[0020] The storage section 6 comprises a grain tank 61 and a discharge device 62. The grain tank 61 is provided to the right of the threshing section 4 (more specifically, the threshing section 4 and the sorting section 5). In other words, the threshing section 4 and the grain tank 61 are arranged side by side on the body frame 11. The storage section 6 also comprises a grain conveying device (not shown) that conveys grains sorted by the oscillating sorting device 51 and the wind sorting device 52 to the grain tank 61. The grain tank 61 stores grains transported by the grain conveying device (not shown). The discharge device 62 discharges the grains stored in the grain tank 61 to any location.

[0021] The discharge device 62 comprises a vertical cylinder portion 621 whose longitudinal direction is the up-down direction, and a horizontal cylinder portion 622 whose longitudinal direction is the horizontal direction. The vertical cylinder portion 621 is disposed behind the grain tank 61. The lower end of the vertical cylinder portion 621 is connected to the grain tank 61. One end (rear end) of the horizontal cylinder portion 622 is connected to the upper end of the vertical cylinder portion 621. An auger (not shown) is provided inside the vertical cylinder portion 621 and the horizontal cylinder portion 622.

[0022] The horizontal cylinder portion 622 can rotate around the vertical cylinder portion 621 as an axis. Furthermore, the horizontal cylinder portion 622 is connected to the vertical cylinder portion 621 so as to be rotatable in the up and down direction. That is, the horizontal cylinder portion 622 can also swing in a vertical plane. By utilizing this rotation and swing, the end portion (tip portion) 622a of the horizontal cylinder portion 622 opposite the side connected to the vertical cylinder portion 621 can be moved appropriately to match the location where grain is to be discharged. The location where grain is to be discharged is, for example, a truck parked on the right side of the combine harvester 100 for loading grain.

[0023] 1 and 2 is the position of the horizontal cylinder part 622 when grains are not being discharged, and is a position that is assumed to be stored so that the horizontal cylinder part 622 does not get in the way. In other words, the horizontal cylinder part 622 can be stored in the storage position when not in use and when grains are not being discharged.

[0024] Furthermore, the grain tank 61 can be rotated left and right around the vertical cylinder portion 621, as shown by the dashed line in Fig. 2. In this embodiment, the grain tank 61 can be changed from the closed state shown by the solid line in Fig. 2 to the open state shown by the dashed line by rotating it to the right. The ability to change the grain tank 61 to the open state can improve the workability of maintenance work.

[0025] The control unit 7 is provided above the front of the body frame 11 and in front of the storage unit 6. The control unit 7 is the part where an operator who controls (drives) the combine harvester 100 sits. The control unit 7 specifically has a cabin 71. In other words, the combine harvester 100 has a body unit 1 that has the cabin 71. The cabin 71 forms an interior space that the operator can enter and exit.

[0026] Fig. 3 is a schematic perspective view showing the internal configuration of the cabin 71. In Fig. 3, in order to make it easier to understand the internal configuration of the cabin 71, the door for the operator to enter and exit, which is provided on the right side of the cabin 71, and the windshield, which is provided in front of the cabin 71, are omitted.

[0027] As shown in Fig. 3, a driver's seat 72 and a plurality of operating units 73 are provided inside the cabin 71. The driver's seat 72 is where an operator who operates the combine harvester 100 sits. The plurality of operating units 73 are units that enable the operator to steer the combine harvester 100. In detail, the plurality of operating units 73 include a handle operating unit 731 and a lever operating unit 732.

[0028] The handle operation unit 731 is disposed in front of the driver's seat 72. The handle operation unit 731 has a steering handle 731a and a front column 731b. The steering handle 731a enables the operator to steer the combine harvester 100. The steering handle 731a is attached to the upper end of a steering shaft (not shown) that extends in the vertical direction. The steering shaft is rotatably supported by the front column 731b. The front column 731b has a front column cover 731c that covers the steering shaft. The front column cover 731c may be made up of a single member, but in this embodiment it is made up of multiple members.

[0029] The lever operating unit 732 is disposed to the side of the driver's seat 72 (on the left side in this embodiment). The lever operating unit 732 has a plurality of operating levers 732a and a side column 732b. The plurality of operating levers 732a include, for example, levers for adjusting the traveling speed of the combine harvester 100. Specifically, the plurality of operating levers 732a include a main speed change lever and an auxiliary speed change lever. The plurality of operating levers 732a also include levers for operating the reaping unit 3. The side column 732b houses a lever mechanism for effectively performing the function of each operating lever 732a. The side column 732b has a side column cover 732c that covers the lever mechanism. Although the side column cover 732c may be formed from a single member, in this embodiment it is formed from multiple members.

[0030] Additionally, in this embodiment, an automatic driving setting unit 74 that performs setting operations related to automatic driving is disposed inside the cabin 71. Setting operations related to automatic driving include, for example, turning automatic driving on and off, setting automatic driving conditions, and the like. In this specification, automatic driving means that at least steering (steering operation) is performed autonomously by controlling devices related to driving with a control device (not shown). In automatic driving, in addition to steering, for example, at least one of adjusting vehicle speed and performing work by the reaping unit 3 configured as a work device may be performed autonomously.

[0031] In this embodiment, the automatic driving setting unit 74 is disposed to the side (more specifically, to the right side) of the handle operation unit 731. However, the position of the automatic driving setting unit 74 within the cabin 71 may be changed as appropriate, as long as it is disposed in a position that is easy for the operator sitting in the driver's seat 72 to operate. Note that setting operations related to automatic driving may be performed using a portable terminal device capable of wireless communication with the combine 100, in addition to the automatic driving setting unit 74.

[0032] <2. Quantum Compass> [2-1. Overview] As described above, the combine harvester 100 of this embodiment is provided so as to be capable of automatic travel. The combine harvester 100 provided so as to be capable of automatic travel requires its own position information. To enable acquisition of its own position information, the combine harvester 100 of this embodiment is provided with a quantum compass 8 (see FIG. 5, etc., described later).

[0033] In this embodiment, the combine harvester 100 is configured to include the quantum compass 8 that can acquire its own position information in order to enable automatic driving, but this is merely an example. For example, the combine harvester 100 may be provided with the quantum compass for other purposes, such as recording its own work information or preventing theft.

[0034] The quantum compass 8 is an electrically powered electrical component capable of measuring latitude and longitude. The quantum compass 8 is attached to the combine harvester 100 as an electrical component. The quantum compass 8 is not subject to restrictions on placement related to communication, as is the case when satellite information is used to acquire location information. However, because the quantum compass 8 is an electrical component, it is preferable that it be mounted on the combine harvester 100 in a manner that is not exposed to, for example, rain, mud, exhaust fumes, etc. In this embodiment, these points are taken into consideration and the location and method of placement of the quantum compass 8 are devised. Detailed examples of the location and method of placement of the quantum compass 8 are described below.

[0035] Before describing the detailed example, an overview of the arrangement of the quantum compass 8 will be described. In this embodiment, the number of quantum compasses 8 arranged in the combine 100 is one. However, the number of quantum compasses 8 arranged in the combine 100 may be multiple. For example, two quantum compasses 8 may be arranged symmetrically in the front and rear or left and right directions, and multiple quantum compasses 8 may be used for attitude control of the combine 100.

[0036] In this embodiment, the quantum compass 8 is disposed inside (inside) the cabin 71. With this configuration, the quantum compass 8 can be disposed in the combine harvester 100 while ensuring waterproofing and dustproofing without the need to add any additional waterproofing or dustproofing components. Also, in this embodiment, the cabin 71 is attached to the vehicle frame 11 in a vibration-proof structure. Therefore, by disposing the quantum compass 8 in the cabin 71, the quantum compass 8 can be disposed in the combine harvester 100 while ensuring vibration-proofing. This makes it possible to prevent a decrease in the measurement accuracy of the quantum compass 8 due to vibrations caused by the combine harvester 100 traveling.

[0037] FIG. 4 is a diagram illustrating a preferred arrangement of the quantum compass 8 provided inside the cabin 71. Specifically, FIG. 4 is a plan view showing the positional relationship between the cabin 71 and the pair of left and right crawlers 21. Note that the two-dot chain line CL shown in FIG. 4 corresponds to the bisector that bisects the body 1 of the combine 100 into left and right equal parts in a plan view. The bisector CL also corresponds to the axis of symmetry of the pair of crawlers 21 that are arranged symmetrically in a plan view. As shown in FIG. 4, the cabin 71 is located so that its center in the left-right direction is shifted to the right of the bisector CL.

[0038] In this embodiment, as described above, the quantum compass 8 is provided to control the automatic driving of the combine harvester 100. During automatic driving, a control point is set on the combine harvester 100, and steering control is performed so that the combine harvester 100 travels along a target driving path (automatic driving path) based on the control point. For this reason, the quantum compass 8, which detects the position of the combine harvester 100, is preferably placed in a position with a small deviation from the control point for automatic driving. This is because the process of determining the position of the combine harvester 100 using the quantum compass 8 can be prevented from becoming complicated.

[0039] The position of the control point for automatic driving is not particularly limited, but in this embodiment it is located at the center (center of rotation) of the left and right crawlers 21. The control point for automatic driving is located on the bisector CL described above. Taking this into consideration, the quantum compass 8 is provided at a position that is toward the center of the fuselage 1 in the left-right direction within the cabin 71. In other words, the quantum compass 8 is located closer to the left side of the cabin 71. By locating the quantum compass 8 in such a position, it is possible to reduce the left-right positional deviation of the quantum compass 8 from the control point during automatic driving. As a result, it is possible to prevent the control processing during automatic driving from becoming complicated.

[0040] 4 is a virtual line shown to make it easier to imagine the position on the left-right central side of the aircraft body 1 within the cabin 71. As an example, the area surrounded by the dashed line BL corresponds to the position on the left-right central side of the aircraft body 1 within the cabin 71. In a preferred embodiment, the quantum compass 8 is disposed within the area surrounded by the dashed line BL.

[0041] [2-2. Detailed example of quantum compass placement] A detailed example of the arrangement of the quantum compass 8 will be described below.

[0042] (2-2-1. First Example) FIG. 5 is a vertical cross-sectional view schematically showing a first embodiment relating to the arrangement of the quantum compass 8. In this embodiment, the quantum compass 8 is arranged on the floor 711 of the cabin 71. The floor 711 of the cabin 71 corresponds to the portion that forms the bottom wall of the cabin 71 (see FIG. 3). In a preferred embodiment, the quantum compass 8 arranged on the floor 711 is arranged at a position that is on the left-right center side of the aircraft body 1 within the cabin 71 (closer to the left side of the cabin 71). By arranging the quantum compass 8 on the floor 711, it is possible to prevent the view of the operator operating the combine 100 from being obstructed.

[0043] The quantum compass 8 placed on the floor 711 may be placed elsewhere if there is no suitable location near the left side of the cabin 71. For example, the quantum compass 8 may be placed on the right side of the front column 731b. In this case, the position of the quantum compass 8 will be shifted from the control point of automatic driving in the left-right direction, but because the quantum compass 8 is placed at a low position in the cabin 71, it is possible to move the position of the quantum compass 8 closer to the control point of automatic driving in the up-down direction.

[0044] The quantum compass 8 placed on the floor 711 may be directly or indirectly supported by the floor 711. In this embodiment, the quantum compass 8 is attached to the floor 711 and is directly supported by the floor 711. The quantum compass 8 may be attached to the floor 711 using fasteners such as bolts, or may be attached using an adhesive, for example. The quantum compass 8 may also be attached to the floor 711 via a bracket (support member) fixed onto the floor 711, in which case the quantum compass 8 is configured to be indirectly supported by the floor 711.

[0045] In this embodiment, the quantum compass 8 is covered by a cover member 81 made of sheet metal, resin, or the like. In the example shown in FIG. 5, the cover member 81 has a box shape that opens downward. In order to improve the maintainability of the quantum compass 8, the cover member 81 is preferably detachably attached to the floor 711 using fasteners such as bolts. Covering the quantum compass 8 with the cover member 81 prevents an operator or the like who enters the cabin 71 from accidentally coming into contact with the quantum compass 8.

[0046] (2-2-2. Second Example) 6 is a vertical cross-sectional view showing a schematic diagram of the second embodiment relating to the arrangement of quantum compass 8. In explaining the second embodiment, explanation of the contents common to the first embodiment will be omitted as much as possible.

[0047] In the second embodiment, the quantum compass 8 is supported on the floor 711 of the cabin 71, as in the first embodiment. The quantum compass 8 may be supported directly or indirectly on the floor 711. Unlike the first embodiment, in the second embodiment, the quantum compass 8 is covered by a cover provided on the operation unit 73 provided inside the cabin 71. Because the quantum compass 8 is covered using the cover provided on the operation unit 73, it is possible to prevent an operator or the like from accidentally touching the quantum compass 8 without providing a separate cover for the quantum compass 8. Furthermore, because the quantum compass 8 is covered by a cover, the design of the cabin 71 can be improved.

[0048] In this embodiment, the operation unit 73 is an operation unit 732 arranged next to the driver's seat 72. More specifically, the operation unit 73 is a lever operation unit 732 arranged on the left side of the driver's seat 72. A cover that covers the quantum compass 8 is a side column cover 732c. The quantum compass 8 is arranged inside the side column 732b. In FIG. 6, reference numeral 712 denotes a side wall (left side wall) that forms the left side surface of the cabin 71.

[0049] Since the side column 732b is provided at a position on the left-right central side of the aircraft body 1 inside the cabin 71, the configuration of this embodiment allows the quantum compass 8 to be placed near the control point of automatic driving. In addition, since the quantum compass 8 is covered by the side column cover 732b, it is possible to prevent the operator or the like from accidentally touching the quantum compass 8.

[0050] In order to avoid unexpected contact with the operator, the quantum compass 8 may be configured to be covered by the front column cover 731c of the handle operating unit 731, for example. In other words, the quantum compass 8 may be disposed inside the front column 731b. However, as in this embodiment, the quantum compass 8 is preferably disposed inside the side column 732b. As described above, if the quantum compass 8 is disposed inside the side column 732b, the quantum compass 8 can be mounted on the combine 100 with a small deviation from the control point of automatic driving. In other words, this makes it possible to prevent the control process during automatic driving from becoming complicated.

[0051] (2-2-3. Third Example) 7 is a vertical cross-sectional view showing a schematic diagram of the third embodiment relating to the arrangement of quantum compass 8. In describing the third embodiment, explanation of the content common to the first and second embodiments will be omitted as much as possible.

[0052] In this embodiment, as in the second embodiment, the quantum compass 8 is disposed within the side column 732b. However, unlike the second embodiment, in this embodiment, the quantum compass 8 is supported by a support member 82 provided within the side column 732b. Specifically, the support member 82 extends in the left-right direction and bridges between the side column cover 732c and the left side wall 712 of the cabin 71. The left end of the support member 82 is fixed to the left side wall 712 of the cabin 71, and the right end is fixed to the side column cover 732c. This fixing may be performed using fasteners such as bolts. The quantum compass 8 is disposed on the upper surface of the support member 82. The quantum compass 8 is attached to the support member 82 using fasteners such as bolts or adhesive, for example.

[0053] The support member 82 may be configured to be fixed only to the side column cover 732c or only to the left side wall 712 of the cabin 71. The quantum compass 8 only needs to be supported by the support member 82, and the attachment position on the support member 82 is not limited to the upper surface, and may be other positions such as the lower surface. The quantum compass 8 may also be attached to the side column cover 732c or the left side wall 712 of the cabin 71 without using a support member. In some cases, the quantum compass 8 may be attached directly or indirectly to the outer surface of the side column cover 732c.

[0054] (2-2-4. Fourth Example) 8 is a vertical cross-sectional view showing a schematic diagram of the fourth embodiment relating to the arrangement of quantum compass 8. In explaining the fourth embodiment, explanation of the content common to the first, second, and third embodiments will be omitted as much as possible.

[0055] In this embodiment, as in the second and third embodiments, the quantum compass 8 is disposed within the side column 732b. Also, as in the third embodiment, the quantum compass 8 is disposed within the side column 732b while being supported by a support member 82A. However, this embodiment differs from the third embodiment in that the support member 82A is supported on the floor 711 via vibration-isolating members 84. A plurality of vibration-isolating members 84 are disposed at appropriate positions between the floor 711 and the support member 82A in the vertical direction. The vibration-isolating members 84 are formed, for example, from a rubber member.

[0056] In this embodiment, the quantum compass 8 attached to the support member 82A is supported via the vibration-isolating member 84. Specifically, the quantum compass 8 is supported on the floor 711 via the vibration-isolating member 84. The quantum compass 8 may also be configured to be supported on the side column cover 732c, the side wall 712 of the cabin 71, or the like via the vibration-isolating member 84.

[0057] By providing vibration-isolating member 84 between support member 82A, to which quantum compass 8 is attached, and a member (such as floor 711) that supports support member 82A, it is possible to prevent the quantum compass 8 itself from vibrating. This makes it possible to prevent a decrease in the measurement accuracy of quantum compass 8 due to the influence of vibration.

[0058] <3. Things to keep in mind> Various modifications can be made to the various technical features disclosed in this specification without departing from the spirit of the technical creation. Furthermore, multiple embodiments, examples, and modifications shown in this specification can be combined to the extent possible.

[0059] <4. Notes> An exemplary work vehicle of the present invention may have a configuration (first configuration) including a body section having a cabin and a quantum compass disposed inside the cabin.

[0060] In the work vehicle of the first configuration described above, the quantum compass may be arranged in a position that is laterally central to the body section within the cabin (second configuration).

[0061] In the work vehicle of the first or second configuration, the quantum compass may be configured (third configuration) to be covered by a cover provided on an operating unit provided inside the cabin.

[0062] In the work vehicle of the third configuration, the operating unit may be configured (fourth configuration) to be an operating unit disposed beside the driver's seat.

[0063] In the work vehicle of any one of the first to fourth configurations, the quantum compass may be supported via a vibration isolation member (fifth configuration). [Explanation of symbols]

[0064] 1. Airframe 8. Quantum Compass 71···Cabin 72 Driver's seat 73...Operation unit 84... Vibration-isolating member 100 Combine 731···Handle operation part 731c···Front column cover 732 Lever operation part 732c···Side column cover (cover)

Claims

1. a fuselage section having a cabin; a quantum compass disposed inside the cabin; A combine harvester equipped with:

2. The combine harvester according to claim 1 , wherein the quantum compass is provided at a position on the left-right central side of the body section within the cabin.

3. The combine harvester according to claim 2 , wherein the quantum compass is covered by a cover provided on an operating unit provided inside the cabin.

4. The combine harvester according to claim 3 , wherein the operating unit is disposed beside a driver's seat.

5. The combine harvester according to claim 1 , wherein the quantum compass is supported via a vibration-isolating member.

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