Field implements and canopies

Abstract

To provide a field implement in which the mounting position of the canopy can be changed. [Solution] The field implement comprises a machine body, a passenger compartment 14 on which a driver can ride, and a canopy 6 covering the passenger compartment 14. The canopy 6 comprises main body portions 60 and 61 covering the passenger compartment 14, support arms 63 supporting the main body portions 60 and 61, and support members 64 that allow the machine body to support the support arms 63. The canopy 6 is supported by the machine body at a first mounting position S1 where the left and right outer ends of the machine body on the support members 64 are located further outwards from the machine body than the left and right outer ends of the machine body on the support arms 63, or at a second mounting position where the left and right inner ends of the machine body on the support members 64 are located further inwards from the machine body than the left and right inner ends of the machine body on the support arms 63.

Description

Technical Field

[0001] The present invention relates to a field work machine and a canopy.

Background Art

[0002] The riding-type rice transaxle disclosed in Patent Document 1 includes a canopy positioned above the riding section. The rear support members of the canopy are erected from both left and right ends of the rear portion of the traveling machine body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] Patent Document 1 does not disclose a configuration in which the rear support members are installed at other portions of the traveling machine body. Here, the further the rear support members are positioned to the left and right outer sides of the traveling machine body, the less the rear support members are erected around the driver's seat, which makes it easier for a worker to perform the work of replenishing seedlings to the seedling mounting table at the rear part of the step around the driver's seat. On the other hand, the further the rear support members are positioned to the left and right inner sides of the traveling machine body, the less likely the rear support members are to protrude leftward and rightward outward from the traveling machine body, so contact between the rear support members and the field or obstacles in the field is suppressed. As described above, there has been a problem that the appropriate mounting position of the canopy for the rear support members varies depending on the field conditions and the demands of workers.

[0005] An object of the present invention is to provide a field work machine that allows the mounting position of the canopy to be changed.

Means for Solving the Problem

[0006] The field implement according to the present invention comprises a machine body, a riding section on which an operator can ride, and a canopy covering the riding section, wherein the canopy comprises a main body covering the riding section, a support arm supporting the main body, and a support member for causing the support arm to be supported by the machine body, and the canopy is supported by the machine body at a first mounting position in which the left and right outer ends of the machine body on the support member are located further out to the left and right of the machine body than the left and right outer ends of the machine body on the support arm, or at a second mounting position in which the left and right inner ends of the machine body on the support member are located further in to the left and right of the machine body than the left and right inner ends of the machine body on the support arm.

[0007] In this configuration, the canopy is supported by the machine at either the first or second mounting position. This allows the mounting position of the canopy to be changed depending on the field conditions or the operator's needs.

[0008] In the present invention, the support arm comprises a first support arm and a second support arm facing the first support arm, wherein, at the first mounting position, the first support arm is positioned on one side relative to the second support arm, and at the second mounting position, the first support arm is positioned on the other side relative to the second support arm.

[0009] With this configuration, the mounting position of the canopy can be changed without altering the configuration of the support members of the first and second support arms by swapping the mounting positions of the first and second support arms.

[0010] In the present invention, it is preferable that the machine body is provided with left and right handrails positioned on the left and right outer sides and rising from the machine body, and that the first support arm and the second support arm are supported by the left and right handrails via the support member.

[0011] In this configuration, the first and second support arms are stably supported by handrails located on the left and right outer sides of the machine, respectively. Furthermore, because the first and second support arms are located on the left and right outer sides of the machine, they are less likely to obstruct the operator's view.

[0012] In the present invention, the canopy includes a connecting member that connects the main body and the support arm, the connecting member having a cylindrical member provided on the support arm and extending in a direction intersecting the support arm, and a protruding member provided on the main body, wherein the main body is connected to the support arm with the protruding member inserted into the cylindrical member.

[0013] In this configuration, the main body of the canopy is connected to the support arm with the protruding member inserted into the cylindrical member. As a result, the movement of the protruding member in the up, down, left, and right directions is restricted by its insertion into the cylindrical member, making it easier to position the main body relative to the support arm.

[0014] In the present invention, it is preferable that the portion of the cylindrical member on one side with respect to the support arm has a smaller dimension in the longitudinal direction of the cylindrical member than the portion of the cylindrical member on the other side with respect to the support arm.

[0015] With this configuration, the position of the support arms on the machine can be changed by swapping the mounting position of the first support arm located on one side with the mounting position of the second support arm located on the other side. This allows the position of the support arms to be changed according to the field conditions or the operator's requirements.

[0016] In the present invention, the cylindrical member extends along a left-right direction intersecting the support arm, and it is preferable that the portion of the cylindrical member on the support member side of the support arm has a smaller dimension in the left-right direction than the portion of the cylindrical member on the opposite side of the support arm from the support member.

[0017] In this configuration, by swapping the mounting positions of the first and second support arms, the distance from the main body to the support arms in the left-right direction of the aircraft is changed. In other words, the distance from the main body to the support arms at the first mounting position is smaller than the distance at the second mounting position. Therefore, the position of the support arms at the first mounting position is located further outwards to the left and right of the aircraft than the position of the support arms at the second mounting position. To put it another way, the position of the support arms at the second mounting position is located further inwards to the left and right of the aircraft than the position of the support arms at the first mounting position.

[0018] The canopy according to the present invention is a canopy that covers the riding section of a field implement, comprising a main body that covers the riding section, a support arm that supports the main body, and a support member that causes the support arm to be supported by the field implement, wherein the canopy is supported by the field implement at a first mounting position in which the left and right outer ends of the field implement on the support member are located further outward from the field implement than the left and right outer ends of the field implement on the support arm, or at a second mounting position in which the left and right inner ends of the field implement on the support member are located further inward from the field implement than the left and right inner ends of the field implement on the support arm.

[0019] In this configuration, the canopy is supported by the field implement at either the first or second mounting position. This allows the mounting position of the canopy to be changed depending on the field conditions or the operator's needs.

[0020] Furthermore, the dimensions of the field implement in the left-right direction change when the configuration of the seedling planting device is modified. With this configuration, even if the configuration of the seedling planting device is changed, the canopy can be supported in the appropriate position on the machine. [Brief explanation of the drawing]

[0021] [Figure 1] This is a left side view of a rice transplanter according to the first embodiment. [Figure 2]This is a plan view of the rice transplanter according to the first embodiment. [Figure 3] This is a front view of the rice transplanter according to the first embodiment. [Figure 4] This is a front view of the canopy according to the first embodiment. [Figure 5] This is a plan view showing the positional relationship between the positioning unit and the canopy frame according to the first embodiment. [Figure 6] This is a left side view showing the positioning unit and the front support arm according to the first embodiment. [Figure 7] This is a front side view showing the positioning unit and the front support arm according to the first embodiment. [Figure 8] This is a left side view showing the rear support arm according to the first embodiment. [Figure 9] This is a front vertical sectional view showing the canopy at the first mounting position according to the first embodiment. [Figure 10] This is a front vertical sectional view showing the canopy at the second mounting position according to the second embodiment. [Mode for Carrying Out the Invention]

[0022] In the following description, the direction of the arrow "FR" shown in the drawings is defined as "front", the direction of the arrow "BK" as "rear", the direction of the arrow "RT" as "right", the direction of the arrow "LT" as "left", the direction of the arrow "UP" as "upper", and the direction of the arrow "DW" as "lower".

[0023] [First Embodiment] Next, the farm work machine according to the first embodiment will be described with reference to the drawings. Fig. 1 is a side view of a transplanter capable of automatically traveling in a farm field (hereinafter simply referred to as a rice transplanter), which is an example of the farm work machine.

[0024] [Overall Structure] As shown in Fig. 1, the rice transplanter is a riding-type four-wheel drive vehicle. At the rear part of the machine body 1, a parallel four-link type link mechanism 13 connected to be capable of elevating and swinging is provided, and a seedling planting device 3 (an example of a work device) connected to the rear end region of the link mechanism 13 to be capable of rolling is attached thereto.

[0025] The machine body 1 comprises a machine frame 1A, wheels 12 as a mechanism for propulsion, an engine 2, and a hydraulic continuously variable transmission 9, which is the main transmission. The continuously variable transmission 9 is, for example, an HST (Hydro-Static Transmission), and changes the driving force (rotational speed) output from the engine 2 by adjusting the angles of the motor swash plate and the pump swash plate. The wheels 12 have steerable left and right front wheels 12A and non-steerable left and right rear wheels 12B. The engine 2 and the continuously variable transmission 9 are mounted at the front of the machine body 1. Power from the engine 2 is supplied to the front wheels 12A, rear wheels 12B, seedling planting device 3, etc., via the continuously variable transmission 9, etc.

[0026] The seedling planting device 3 is configured, for example, in an 8-row planting configuration. The seedling planting device 3 includes a seedling tray 21, an 8-row planting mechanism 22, and the like.

[0027] The seedling tray 21 is a base on which eight rows of mat-shaped seedlings are placed. The seedling tray 21 moves back and forth in the left-right direction with a constant stroke corresponding to the left-right width of the mat-shaped seedlings, and the vertical feeding mechanism (not shown) feeds each mat-shaped seedling on the seedling tray 21 vertically at a predetermined pitch toward the lower end of the seedling tray 21 each time the seedling tray 21 reaches the left or right stroke end. The eight planting mechanisms 22 are rotary type and are arranged in the left-right direction at constant intervals corresponding to the planting rows. Each planting mechanism 22 receives driving force from the engine 2 when the seedling planting clutch is engaged, and cuts one seedling (also called a planted seedling) from the lower end of each mat-shaped seedling placed on the seedling tray 21 and plants it in the muddy area after leveling.

[0028] The rice transplanter is equipped with a passenger compartment 14 at the rear where an operator can sit. The passenger compartment 14 includes a steering wheel 10 for steering the front wheels, a work operation lever (not shown) that enables the raising and lowering of the seedling planting device 3 and switching of its operating state, an information terminal 5 that displays (notifies) various information and notifies (outputs) it to the operator, and a driver's seat 16 where the operator sits.

[0029] The passenger compartment 14 also includes a step 4 supported by the aircraft frame 1A. The step 4 has left and right extension steps 4B at the rear of the passenger compartment 14. The rear of the step 4 is located around the driver's seat 16. The left extension step 4B and the right extension step 4B are arranged symmetrically.

[0030] The aircraft body 1 is located on the left and right outer sides of the aircraft body 1 and comprises left and right handrails 32 rising from the aircraft body 1, and a protective frame 31 rising from the rear of the aircraft body 1. As shown in Figure 2, the left and right handrails 32 are connected to the aircraft frame 1A and rise from the left and right outer sides of the extension step 4B. Specifically, the right handrail 32 is located to the right of the right extension step 4B. The left handrail 32 is located to the left of the left extension step 4B. The protective frame 31 is located behind the boarding area 14.

[0031] The aircraft body 1 has a spare seedling storage device 15 for storing spare seedlings and a spare seedling support frame 17 for supporting the spare seedling storage device 15, located in front of the passenger compartment 14. The spare seedling support frame 17 rises from the aircraft body frame 1A. The spare seedling support frame 17 is located in front of the driver's seat 16.

[0032] The steering wheel 10 is connected to the front wheels 12A via a steering mechanism (not shown), and the steering angle of the front wheels 12A is adjusted by rotating the steering wheel 10.

[0033] As shown in Figures 1, 2, and 3, the spare seedling support frame 17, which also functions as a support frame of the present invention, has a two-tiered structure consisting of left and right base frames 17a and an arch-shaped upper frame 17b provided at the upper end of the base frames 17a. The upper frame 17b consists of a pair of legs 17b1 and a crossbeam 17b2 connecting the legs 17b1, and is positioned at a height located diagonally above and in front of the riding section 14.

[0034] The upper frame 17b of the spare seedling support frame 17 is pivotable around a first axis A1 that is aligned horizontally with respect to the base frame 17a. This allows the spare seedling support frame 17 to change between a working position in which the upper frame 17b extends upward from the base frame 17a and a storage position in which the upper frame 17b extends backward from the base frame 17a.

[0035] [Positioning Unit] As shown in Figures 1, 2, and 3, the rice transplanter is equipped with a positioning unit 8. The positioning unit 8 consists of a satellite positioning module (not shown) and a housing 80 that houses the satellite positioning module. A support bracket 81 that supports the positioning unit 8 is fixed to the crossbeam 17b2. The positioning unit 8 receives positioning signals from artificial satellites used in GNSS (Global Navigation Satellite Systems, such as GPS, QZSS, Galileo, GLONASS, BeiDou, etc.).

[0036] The positioning unit 8 is supported by the spare seedling support frame 17. In other words, the positioning unit 8 is supported by the aircraft body 1. Furthermore, the positioning unit 8 is located in the left-right center of the aircraft body 1. In addition, the positioning unit 8 is located in front of the front-to-back center of the aircraft body 1.

[0037] The positioning unit 8 outputs positioning data for calculating the position and bearing of the aircraft 1. The positioning unit 8 includes an inertial measurement module (not shown) that detects the tilt and acceleration of the three axes of the aircraft 1 in order to assist the positioning of the satellite positioning module, and this inertial measurement module can also be housed in the housing 80 that houses the satellite positioning module.

[0038] The rice transplanter is equipped with a control device (not shown). In manned automatic driving mode or unmanned automatic driving mode, the control device determines the difference between the vehicle's position calculated based on satellite positioning data sequentially sent from the positioning unit 8 and the set target driving path, and automatically steers the machine 1 so that it follows the target driving path.

[0039] [Canopy] As shown in Figures 1, 2, and 3, the rice transplanter is equipped with a canopy 6 that covers the riding section 14. The canopy 6 comprises a covering member 60 (corresponding to the main body) that covers the riding section 14, a canopy frame 61 (corresponding to the main body) that supports the covering member 60, a front support arm 62 that supports the canopy frame 61 and is provided at the front of the machine body 1, and a rear support arm 63 (corresponding to a support arm) that supports the canopy frame 61 and is provided at the rear of the machine body 1.

[0040] The canopy 6 can be positioned in both a working position and a stowed position. Figure 1 shows the canopy 6 in the working position. In the working position, the canopy 6 is tilted downwards towards the front. This prevents rainwater from accumulating on the top surface of the canopy 6, allowing it to be discharged from the front to the outside of the canopy 6.

[0041] [Covering member] As shown in Figures 1, 2, and 3, the covering member 60 is a sheet-like member that covers the passenger compartment 14 from above. In other words, the covering member 60 is located above the passenger compartment 14. The covering member 60 is made of, for example, cloth or a soft synthetic resin (e.g., polyvinyl chloride, polyethylene, polypropylene, etc.). As shown in Figure 1, the positioning unit 8 is located below the covering member 60.

[0042] As shown in Figure 4, the cover member 60 has a water-stopping portion 60a on its front surface that is folded upward to stop rainwater and the like. Specifically, on the front surface of the cover member 60, a recessed portion 60b of a snap button is provided at the top, and a protruding portion 60c of a snap button is provided at the bottom. The protruding portion 60c of the snap button is fastened to the recessed portion 60b of the snap button. This maintains the water-stopping portion 60a in a folded upward state. Furthermore, when the water-stopping portion 60a is folded upward, the upper end of the water-stopping portion 60a is located above the top surface TF of the cover member 60. Therefore, rainwater flowing along the top surface TF of the canopy 6 is stopped by the water-stopping portion 60a, and rainwater is discharged to the outside of the canopy 6 from the left and right sides of the front of the canopy 6, without obstructing the driver's view. The present invention is not limited to this, however, the front surface of the covering member 60 may be provided with a protruding portion 60c of the snap button at the top and a recessed portion 60b of the snap button at the bottom.

[0043] [Canopy Frame] As shown in Figure 5, the canopy frame 61 has an outer edge frame 61a extending along the outer edge of the covering member 60, a plurality of front and rear frames 61b extending in the front-to-back direction, and a plurality of left and right frames 61c extending in the left-to-right direction. The canopy frame 61 is made of metal.

[0044] In this embodiment, the outer frame 61a extends in a polygonal shape when viewed from above. However, it is not limited to this, and the outer frame 61a may be circular or elliptical when viewed from above.

[0045] As shown in Figure 5, the front and rear frames 61b have a first front and rear frame 61b1 and a second front and rear frame 61b2. The first front and rear frame 61b1 and the second front and rear frame 61b2 are aligned along the left-right direction. The first front and rear frame 61b1 is located to the right of the left-right center of the aircraft body 1. The second front and rear frame 61b2 is located to the left of the left-right center of the aircraft body 1.

[0046] As shown in Figure 5, the positioning unit 8 is located to the left of the first front / rear frame 61b1 in a plan view. Furthermore, the positioning unit 8 is located to the right of the second front / rear frame 61b2 in a plan view. In other words, the positioning unit 8 is located between multiple front / rear frames 61b in a plan view. Additionally, the positioning unit 8 is positioned so as not to overlap with the front / rear frames 61b in a plan view.

[0047] As shown in Figure 5, the left and right frames 61c include a plurality of first left and right frames 61c1 extending in the left-right direction across the outer edge frame 61a and the first front and rear frame 61b1, a plurality of second left and right frames 61c2 extending in the left-right direction across the first front and rear frame 61b1 and the second front and rear frame 61b2, and a plurality of third left and right frames 61c3 extending in the left-right direction across the second front and rear frame 61b2 and the outer edge frame 61a.

[0048] As shown in Figure 5, in this embodiment, four second left and right frames 61c2 are arranged along the front-to-back direction. The positioning unit 8 is located behind the first second left and right frame 61c2 from the front in a plan view. Also, the positioning unit 8 is located in front of the second second left and right frame 61c2 from the front in a plan view. In other words, the positioning unit 8 is located between multiple left and right frames 61c in a plan view. Furthermore, the positioning unit 8 is positioned so as not to overlap with the left and right frames 61c in a plan view.

[0049] With the above configuration, the positioning unit 8 is located below the cover member 60 and in a position that does not overlap with the front and rear frames 61b and the second left and right frames 61c2 in a plan view. In other words, the positioning unit 8 is located below the cover member 60 and in a position that does not overlap with the canopy frame 61 in a plan view.

[0050] As shown in Figures 6 and 7, the positioning unit 8 receives signals from navigation satellites located within the receiving area Ra, which is set to be in the region zenith-facing than a preset elevation angle θ relative to the horizontal plane. The receiving area Ra is a downward-pointing cone-shaped region with the central part of the positioning unit 8 as its apex. The portion indicated by the elevation angle θ is the lower limit boundary of the receiving area Ra of the positioning unit 8. The elevation angle θ is, for example, 15°. However, it is not limited to this and can be set in the range of, for example, 10° to 30°.

[0051] As shown in Figure 6, the second left and right frames 61c2 are located within the range of elevation angle θ. In other words, the second left and right frames 61c2 are located outside the range of the receiving area Ra of the positioning unit 8.

[0052] Furthermore, as shown in Figure 7, the first front / rear frame 61b1 and the second front / rear frame 61b2 are located within the range of the elevation angle θ. In other words, the front / rear frame 61b is located outside the range of the receiving area Ra of the positioning unit 8. Therefore, the canopy frame 61 is located outside the range of the receiving area Ra of the positioning unit 8.

[0053] As shown in Figures 1 and 3, the front support arm 62 and the rear support arm 63 rise from the aircraft body 1.

[0054] [Front support arm] As shown in Figures 6 and 7, the right front support arm 62 is located to the right of the positioning unit 8 and extends from the crossbeam 17b2 to the canopy frame 61. The left front support arm 62 is located to the left of the positioning unit 8 and extends from the crossbeam 17b2 to the canopy frame 61. In other words, the front support arms 62 and the positioning unit 8 are attached to and supported by the spare seedling support frame 17.

[0055] As shown in Figures 6 and 7, the left and right front support arms 62 are pivotable around a third axis A3 along the left-right direction. The left and right upper frames 17b pivot rearward around a first axis A1 relative to the left and right base frames 17a, while the left and right front support arms 62 pivot forward around the third axis A3 along the left-right direction relative to the upper frames 17b. As a result, the front of the canopy 6 in the stowed position is positioned lower than the front of the canopy 6 in the working position. The pivoting of the left and right upper frames 17b is made possible by removing the locking pins (not shown) provided at the base ends of the upper frames 17b.

[0056] As shown in Figure 6, the canopy 6 is configured to change between a working position and a storage position in accordance with the change in the position of the spare seedling support frame 17. In other words, as the left and right upper frames 17b swing backward around the first axis A1 relative to the left and right base frames 17a, the left and right front support arms 62 automatically swing forward around the third axis A3 along the left-right direction relative to the upper frames 17b.

[0057] Furthermore, when the canopy 6 changes its orientation from the working position to the stowed position, the front support arm 62 maintains the distance between the canopy 6 and the positioning unit 8. As a result, when the canopy 6 changes its orientation, the positioning unit 8 is not positioned in the path of the canopy 6's movement, and therefore the canopy 6 and the positioning unit 8 do not come into contact. In addition, the canopy 6 is positioned above the positioning unit 8 in both the working and stowed positions. This makes it easier to protect the positioning unit 8 from rain and mud in the field, not only in the working position but also in the stowed position.

[0058] As described above, the spare seedling support frame 17 is fixed in the working position by a locking pin provided at the base end of the upper frame 17b. Furthermore, by removing the locking pin provided at the base end of the upper frame 17b, the spare seedling support frame 17 and the canopy 6 can be changed from the working position to the storage position. The system is not limited to this, and a locking pin may also be provided at the base end of the front support arm 62. In this case, the canopy 6 is fixed in the working position by a locking pin provided at the base end of the front support arm 62. Furthermore, by removing the locking pin provided at the base end of the front support arm 62, the canopy 6 can be changed from the working position to the storage position. In other words, the fixing of the spare seedling support frame 17 to the working position and the fixing of the canopy 6 to the working position may be released separately.

[0059] As shown in Figures 1 and 6, one end of the first damper 17d is connected to the right leg portion 17b1 of the left and right upper frames 17b. The other end of the first damper 17d is connected to the right base frame 17a.

[0060] One end of the second damper 17e is connected to the left leg portion 17b1 of the left and right upper frames 17b. The other end of the second damper 17e is connected to the left base frame 17a of the spare seedling support frame 17. The first damper 17d and the second damper 17e are, for example, air dampers. This suppresses the canopy 6 from swinging violently.

[0061] [Rear support arm] As shown in Figures 8 and 9, the rear support arm 63 is supported by the left and right handrails 32. The rear support arm 63 comprises a first rear support arm 63a and a second rear support arm 63b opposite to the first rear support arm 63a. In this embodiment, the first rear support arm 63a is located to the right (one side) of the second rear support arm 63b. The second rear support arm 63b is located to the left (the other side) of the first rear support arm 63a. The first rear support arm 63a extends from the right handrail 32 to the canopy frame 61. The second rear support arm 63b extends from the left handrail 32 to the canopy frame 61.

[0062] As shown in Figure 1, the lower parts of the first rear support arm 63a and the second rear support arm 63b extend along the vertical direction, while the upper parts of the first rear support arm 63a and the second rear support arm 63b extend diagonally upward and rearward.

[0063] As shown in Figure 9, the first rear support arm 63a and the second rear support arm 63b are pivotable around a fourth axis A4 along the left-right direction. The first rear support arm 63a and the second rear support arm 63b pivot rearward around the fourth axis A4 relative to the left and right handrails 32. As a result, the rear of the canopy 6 in the stowed position is positioned lower than the rear of the canopy 6 in the working position. The pivoting of the first rear support arm 63a and the second rear support arm 63b is made possible by removing the locking pins (not shown) provided at the base ends of the first rear support arm 63a and the second rear support arm 63b.

[0064] As shown in Figures 8 and 9, the canopy 6 includes a support member 64 that supports the rear support arm 63 by the aircraft body 1, and a connecting member 65 that connects the canopy frame 61 and the rear support arm 63. In other words, the first rear support arm 63a and the second rear support arm 63b are supported by the left and right handrails 32 via the support member 64.

[0065] [Support members] As shown in Figure 8, the support member 64 comprises a first support member 64a provided at the base end of the first rear support arm 63a, and a second support member 64b provided at the base end of the second rear support arm 63b. The support member 64 is U-shaped in a downward-facing cross-section. The support member 64 also covers the upper part of the handrail 32 from above. The support member 64 is fixed in position to the handrail 32 by a plurality of fixing bolts BT extending along the left-right direction. In this embodiment, the support member 64 is fixed to the front upper corner of the handrail 32. However, the support member 64 may be fixed to other parts of the handrail 32.

[0066] As shown in Figure 9, the left and right outer ends of the machine body 1 on the first support member 64a are located further outward on the left and right sides of the machine body 1 than the left and right outer ends of the machine body 1 on the first rear support arm 63a. In this embodiment, the first support member 64a is located further outward on the left and right sides of the machine body 1 than the first rear support arm 63a. Specifically, the first support member 64a is located to the right of the first rear support arm 63a.

[0067] Furthermore, the left and right outer ends of the aircraft body 1 on the second support member 64b are located further outward on the left and right sides of the aircraft body 1 than the left and right outer ends of the aircraft body 1 on the second rear support arm 63b. In this embodiment, the second support member 64b is located further outward on the left and right sides of the aircraft body 1 than the second rear support arm 63b. Specifically, the second support member 64b is located to the left of the second rear support arm 63b.

[0068] [Connecting component] As shown in Figure 9, the connecting member 65 has a cylindrical member 65a provided on the rear support arm 63 and extending in a direction intersecting the rear support arm 63, and a protruding member 65b provided on the canopy frame 61.

[0069] The cylindrical member 65a extends along the left-right direction, intersecting the rear support arm 63. As shown in Figure 9, the portion of the cylindrical member 65a on the side of the second support member 64b (left side) relative to the second rear support arm 63b is smaller in the left-right direction than the portion of the cylindrical member 65a on the opposite side of the second support member 64b (right side) relative to the second rear support arm 63b. Similarly, the portion of the cylindrical member 65a on the side of the first support member 64a (right side) relative to the first rear support arm 63a is smaller in the left-right direction than the portion of the cylindrical member 65a on the opposite side of the first support member 64a (left side) relative to the first rear support arm 63a. In other words, the portion of the cylindrical member 65a on one side relative to the rear support arm 63 is smaller in the longitudinal direction than the portion of the cylindrical member 65a on the other side relative to the rear support arm 63.

[0070] The protruding member 65b extends along the left-right direction. The protruding member 65b is insertable into the cylindrical member 65a. As shown in Figure 9, with the protruding member 65b inserted into the cylindrical member 65a, the protruding member 65b (canopy frame 61) is connected to the cylindrical member 65a (rear support arm 63).

[0071] Specifically, the protruding member 65b is inserted from the left end of the cylindrical member 65a of the second rear support arm 63b, and the protruding member 65b is fixed to the cylindrical member 65a at the right end of the cylindrical member 65a. Similarly, the protruding member 65b is inserted from the right end of the cylindrical member 65a of the first rear support arm 63a, and the protruding member 65b is fixed to the cylindrical member 65a at the left end of the cylindrical member 65a.

[0072] As described above, in this embodiment, the canopy 6 is supported by the machine body 1 (rice transplanter) at a first mounting position S1 in which the left and right outer ends of the machine body 1 (rice transplanter) on the support member 64 are located further out to the left and right of the machine body 1 (rice transplanter) than the left and right outer ends of the machine body 1 (rice transplanter) on the rear support arm 63.

[0073] [Second Embodiment] A field implement (rice transplanter) according to the second embodiment will be described with reference to Figure 10. Components similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed explanations are omitted.

[0074] In this embodiment, the seedling planting device 3 is configured as a six-row planting type, for example. The seedling planting device 3 includes a seedling tray 21, six planting mechanisms 22, etc. The seedling tray 21 is a base on which six mat-shaped seedlings are placed. The six planting mechanisms 22 are rotary type and are arranged in the left-right direction at regular intervals corresponding to the planting rows.

[0075] In this embodiment, step 4 does not have left and right extension steps 4B at the rear. The left and right handrails 32 rise from the left and right outer sides of the rear of step 4. Specifically, the right handrail 32 is located on the right side of the right rear of step 4. The left handrail 32 is located on the left side of the left rear of step 4. In other words, the left and right handrails 32 in this embodiment are located further inward on the left and right sides of the machine body 1 than the left and right handrails 32 in the above-described embodiment.

[0076] [Rear support arm] In this embodiment, as shown in Figure 10, the first rear support arm 63a is located to the left (the other left / right side) of the second rear support arm 63b. The second rear support arm 63b is located to the right (the other left / right side) of the first rear support arm 63a. In this embodiment, the first rear support arm 63a extends from the left handrail 32 to the canopy frame 61. The second rear support arm 63b extends from the right handrail 32 to the canopy frame 61. In other words, the positions of the first rear support arm 63a and the second rear support arm 63b are swapped compared to the above-described embodiment.

[0077] [Support members] The left and right inner ends of the machine body 1 on the first support member 64a are located further inward on the left and right sides of the machine body 1 than the left and right inner ends of the machine body 1 on the first rear support arm 63a. In this embodiment, as shown in Figure 10, the first support member 64a is located further inward on the left and right sides of the machine body 1 than the first rear support arm 63a.

[0078] Furthermore, the left and right inner ends of the aircraft body 1 on the second support member 64b are located further inward on the left and right sides of the aircraft body 1 than the left and right inner ends of the aircraft body 1 on the second rear support arm 63b. In this embodiment, the second support member 64b is located further inward on the left and right sides of the aircraft body 1 than the second rear support arm 63b.

[0079] As described above, in this embodiment, the canopy 6 is supported by the machine body 1 (rice transplanter) at a second mounting position S2 in which the left and right inner ends of the machine body 1 (rice transplanter) on the support member 64 are located further inward on the left and right sides of the machine body 1 (rice transplanter) than the left and right inner ends of the machine body 1 (rice transplanter) on the rear support arm 63.

[0080] In this embodiment, the protruding member 65b is inserted from the left end of the cylindrical member 65a of the first rear support arm 63a, and the protruding member 65b is fixed to the cylindrical member 65a at the right end of the cylindrical member 65a. Similarly, the protruding member 65b is inserted from the right end of the cylindrical member 65a of the second rear support arm 63b, and the protruding member 65b is fixed to the cylindrical member 65a at the left end of the cylindrical member 65a.

[0081] In other words, the canopy 6 is supported by the machine body 1 (rice transplanter) at either the first mounting position S1 or the second mounting position S2.

[0082] [Another embodiment] (1) In the above embodiment, the positioning unit 8 was provided on the crossbeam 17b2 of the upper frame 17b of the spare seedling support frame 17, but it may also be provided on other members of the spare seedling support frame 17 as long as they are below the covering member 60.

[0083] (2) In the above-described embodiment, the canopy 6 is supported by a front support arm 62 and a rear support arm 63. However, the canopy 6 may not have a front support arm 62 and may be supported only by the rear support arm 63.

[0084] (3) In the above embodiment, the canopy 6 is provided with left and right front support arms 62. However, the number of front support arms 62 may be one or three or more.

[0085] (4) In the above embodiment, the rear support arm 63 comprises a first rear support arm 63a and a second rear support arm 63b. However, the number of rear support arms 63 may be one or three or more.

[0086] (5) In the above-described embodiment, at the first mounting position S1, the entire first support member 64a is located further out to the left and right of the machine body 1 than the left and right outer ends of the machine body 1 on the first rear support arm 63a. Also, at the first mounting position S1, the entire second support member 64b is located further out to the left and right of the machine body 1 than the left and right outer ends of the machine body 1 on the second rear support arm 63b. However, the embodiment is not limited to this, and at the first mounting position S1, a part of the first support member 64a may be located further out to the left and right of the machine body 1 than the left and right outer ends of the machine body 1 on the first rear support arm 63a. Also, at the first mounting position S1, a part of the second support member 64b may be located further out to the left and right of the machine body 1 than the left and right outer ends of the machine body 1 on the second rear support arm 63b.

[0087] (6) In the above-described embodiment, at the second mounting position S2, the entire first support member 64a is located further inward on the left and right sides of the machine body 1 than the left and right inner ends of the machine body 1 on the first rear support arm 63a. Also, at the second mounting position S2, the entire second support member 64b is located further inward on the left and right sides of the machine body 1 than the left and right inner ends of the machine body 1 on the second rear support arm 63b. However, the embodiment is not limited to this, and at the second mounting position S2, a part of the first support member 64a may be located further inward on the left and right sides of the machine body 1 than the left and right inner ends of the machine body 1 on the first rear support arm 63a. Also, at the second mounting position S2, a part of the second support member 64b may be located further inward on the left and right sides of the machine body 1 than the left and right inner ends of the machine body 1 on the second rear support arm 63b.

[0088] (6) In the above-described embodiment, the covering member 60 is a sheet-like member and is made of cloth, soft synthetic resin, etc. However, it is not limited to this, and the covering member 60 may be in other forms. For example, the covering member 60 may be made of hard synthetic resin, etc.

[0089] (7) In the above-described embodiment, the first rear support arm 63a and the second rear support arm 63b are supported by the left and right handrails 32. However, the first rear support arm 63a and the second rear support arm 63b may be supported by other parts of the machine body 1.

[0090] In this embodiment, the rice transplanter includes a fertilizer applicator and a protective frame that protects the fertilizer applicator from the rear. In this case, the first rear support arm 63a and the second rear support arm 63b may be supported by the protective frame at the second mounting position S2. In other words, the canopy 6 may be supported by different parts of the same machine body 1 at the first mounting position S1 and the second mounting position S2.

[0091] (8) In the above-described embodiment, the connecting member 65 comprises a cylindrical member 65a and a protruding member 65b inserted into the cylindrical member 65a. However, the connecting member 65 is not limited to this and may take other forms. For example, the cylindrical member 65a may have connecting portions to the canopy frame 61 at its right end and left end, respectively. In this case, the connecting member 65 does not need to have a protruding member 65b.

[0092] Specifically, at the first mounting position S1, the right end of the cylindrical member 65a of the first rear support arm 63a is connected to the canopy frame 61. Also, at the first mounting position S1, the left end of the cylindrical member 65a of the second rear support arm 63b is connected to the canopy frame 61.

[0093] Furthermore, at the second mounting position S2, the left end of the cylindrical member 65a of the first rear support arm 63a is connected to the canopy frame 61. Also, at the second mounting position S2, the right end of the cylindrical member 65a of the second rear support arm 63b is connected to the canopy frame 61.

[0094] (9) In the above embodiment, the portion of the cylindrical member 65a on the support member 64 side (one side) of the rear support arm 63 is smaller in the left-right direction than the portion of the cylindrical member 65a on the opposite side of the support member 64 (the other side) with respect to the rear support arm 63. However, the portion of the cylindrical member 65a on the support member 64 side (one side) of the rear support arm 63 may be larger in the left-right direction than the portion of the cylindrical member 65a on the opposite side of the support member 64 (the other side) with respect to the rear support arm 63. Alternatively, the portion of the cylindrical member 65a on the support member 64 side (one side) of the rear support arm 63 may be the same in the left-right direction as the portion of the cylindrical member 65a on the opposite side of the support member 64 (the other side) with respect to the rear support arm 63.

[0095] (10) In the above-described embodiment, the seedling planting device 3 is of the 8-row or 6-row planting type. However, the seedling planting device 3 can be changed to the 2-row planting, 4-row planting, or other types by clutch control.

[0096] (11) In the above-described embodiment, the "work vehicle" according to the present invention was a riding-type rice transplanter, but the "work vehicle" may be other work vehicles such as a combine harvester or a tractor.

[0097] Furthermore, the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, provided that no inconsistencies arise. Moreover, the embodiments disclosed herein are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the object of the present invention. [Industrial applicability]

[0098] This invention can be widely used in various agricultural vehicles such as rice transplanters, fertilizer spreaders, mowers, and combine harvesters, as well as construction machinery and other work vehicles. [Explanation of Symbols]

[0099] 1: Aircraft 6: Canopy 60: Covering material (main body) 61: Canopy frame (main body) 63: Rear support arm (support arm) 63a: First rear support arm (first support arm) 63b: Second rear support arm (second support arm) 64: Support member 65: Connecting member 65a: Cylindrical member 65b: Protruding member 14: Boarding Section 32: Handrail S1: First mounting position S2: Second mounting position

Claims

1. A field implement comprising a machine body, a passenger compartment on which a driver can board, and a canopy covering the passenger compartment, The canopy comprises a main body that covers the passenger compartment, a support arm that supports the main body, and a support member that allows the support arm to be supported by the aircraft body. The canopy is supported by the machine in a field implement, with the machine being supported by the machine at a first mounting position where the left and right outer ends of the machine on the support member are located further outwards from the machine than the left and right outer ends of the machine on the support arm, or at a second mounting position where the left and right inner ends of the machine on the support member are located further inwards from the machine than the left and right inner ends of the machine on the support arm.

2. The support arm comprises a first support arm and a second support arm facing the first support arm. At the first mounting position, the first support arm is positioned to one side (left or right) relative to the second support arm. The field implement according to claim 1, wherein, at the second mounting position, the first support arm is located on the left or right side relative to the second support arm.

3. The aircraft is equipped with handrails on the left and right outer sides, respectively, which rise up from the aircraft. The field implement according to claim 2, wherein the first support arm and the second support arm are supported by the left and right handrails via the support member.

4. The canopy includes a connecting member that connects the main body and the support arm, The connecting member comprises a cylindrical member provided on the support arm and extending in a direction intersecting the support arm, and a protruding member provided on the main body. The field work machine according to claim 1, wherein the main body is connected to the support arm while the protruding member is inserted into the cylindrical member.

5. The field implement according to claim 4, wherein the portion of the cylindrical member on one side with respect to the support arm has a smaller dimension in the longitudinal direction of the cylindrical member than the portion of the cylindrical member on the other side with respect to the support arm.

6. The cylindrical member extends along the left-right direction intersecting the support arm, The field implement according to claim 4, wherein the portion of the cylindrical member on the side of the support arm is smaller in the left-right direction than the portion of the cylindrical member on the opposite side of the support arm from the support member.

7. A canopy that covers the riding area of ​​a field implement, The main body covering the aforementioned passenger compartment, A support arm that supports the main body, The support member for supporting the support arm by the field implement is provided, A canopy supported by a field implement at a first mounting position in which the left and right outer ends of the field implement on the support member are located further outward from the field implement than the left and right outer ends of the field implement on the support arm, or at a second mounting position in which the left and right inner ends of the field implement on the support member are located further inward from the field implement than the left and right inner ends of the field implement on the support arm.

Images