CN111918544B - Combine harvester - Google Patents

Abstract

A combine harvester is provided with: a driving unit having a driving seat (37); and a cab covering the driving portion. The lower end of the rear wall (9A) of the cab is placed and supported on the upper end surface of the rear wall (8A) of the cab.

Description

Combine harvester

Technical Field

The present invention relates to combine harvesters.

Background

[1]

Conventionally, as a combine harvester, for example, a combine harvester described in patent document 1 is known. Patent document 1 discloses a combine harvester including: a driver (in the literature, "driver (11)") having a driver seat (in the literature, "driver seat (13)"); and a cab (in the literature, "cab (12)") covering the driver.

[2]

Conventionally, as a combine harvester, for example, a combine harvester described in patent document 1 is known. Patent document 1 discloses a combine harvester including: a driver (in the literature, "driver (11)") having a driver seat (in the literature, "driver seat (13)"); an engine room provided below the driving section and accommodating an engine (in the literature, "engine (23)"); an engine cover (in the literature, "engine cover (22)") that supports the driver seat and separates a riding space of the driver from the engine room; a radiator (in the literature, "radiator (31)") which is provided in the engine compartment on the outer side of the engine body in the lateral direction thereof, and which radiates heat from the engine cooling water; and a dust cover (in the literature, a lateral side cover portion (22B)) for covering the radiator from the lateral outside of the machine body in a state in which ventilation is allowed and in a state in which dust is prevented from passing. In the combine described in patent document 1, the lateral side cover portion (22B) is formed to extend to a height higher than the upper side cover portion (22C), and the area of the outside air intake portion (34) can be made sufficiently large.

[3]

Conventionally, as a combine harvester, for example, a combine harvester described in patent document 1 is known. Patent document 1 discloses a combine harvester including: a driver (in the literature, "driver (11)") having a driver seat (in the literature, "driver seat (13)"); an engine (in the literature, "engine (23)") provided below the driver seat; and an engine cover (in the literature, "engine cover (22)") having a roof panel (in the literature, "upper side cover portion (22C)") on which the driver seat is mounted and supported, and covering the engine. The hood (22) is configured to be swingable about a front-rear axis (X) between a normal posture and a maintenance posture. In the combine described in patent document 1, maintenance in the engine room can be performed by switching the engine hood (22) to a maintenance position to open the interior of the engine hood.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2012-100610

Disclosure of Invention

Problems to be solved by the invention

[1]

The problems corresponding to the background art [1] are as follows.

In the combine described in patent document 1, the cab is disposed so as to cover the cab, but there is room for improvement in ensuring air tightness in the cab and stably supporting the cab on the cab.

In view of the above, there is a demand for a combine harvester that can ensure airtightness in the cab and stably support the cab in the cab.

[2]

The problems corresponding to the background art [2] are as follows.

In the combine described in patent document 1, the dust cover is a member having a high height, but it cannot be said that the dust cover is stably supported even in the upper portion.

In view of the above, a combine harvester capable of stably supporting a dust cover is desired.

[3]

The problems corresponding to the background art [3] are as follows.

The combine described in patent document 1 has room for improvement in terms of simplifying a structure for opening the interior of a hood in order to achieve a large-scale structure for swinging the entire hood.

In view of the above, there is a demand for a combine harvester which can simplify the structure of opening the interior of the hood and can easily perform maintenance in the engine room.

Solution for solving the problem

[1]

The solution corresponding to the problem [1] is as follows.

The present invention is characterized by comprising: a driving unit having a driving seat; and a cab covering the cab, wherein a lower end portion of a rear wall of the cab is placed and supported on an upper end surface of the rear wall of the cab.

According to this feature, the gap is blocked by the lower end portion of the rear wall of the cab and the upper end surface of the rear wall of the cab. This ensures the air tightness in the cab. The rear wall of the cab is a portion of the cab having high rigidity, and the cab can be stably supported by the cab.

In the present invention, it is preferable that an inclined wall portion inclined downward toward the front is provided on the rear wall of the cab, and the cab is placed and supported on an upward surface of the inclined wall portion.

According to this feature, the surface (mounting surface) of the inclined wall portion on which the cab is mounted is ensured to be long in the front-rear direction, and the cab can be supported more stably by the cab.

In the present invention, it is preferable that a side panel provided on one side of the body in the lateral direction with respect to the driver seat is provided in the driver's seat, the driver's cab is placed and supported on an upper surface of a side panel frame constituting the side panel, and an upward surface of the inclined wall portion is continuous with the upper surface of the side panel frame.

According to this feature, the cab can be supported by the upper surface of the side panel frame. The mounting surface of the inclined wall portion is continuous with the mounting surface of the side panel frame. Thus, the cab is easily placed and supported on the cab without causing a height difference between the placement surface of the inclined wall portion and the placement surface of the side panel frame.

In the present invention, it is preferable that a side window is provided in a side portion of the cab on the side where the side panel is located, and a lower end portion of a window frame in the side window is placed and supported on an upper surface of the inclined wall portion and an upper surface of the side panel frame.

According to this feature, the window frame in the side window is supported by being placed over a wide range extending across the inclined wall portion and the side panel frame. This enables the cab to be supported by the cab more stably.

In the present invention, it is preferable that the rear wall of the cab and the side panel frame extend to a position outside the cab.

According to this feature, as many parts of the cab as possible are placed and supported on the rear wall and the side panel frame of the cab, so that the cab can be supported more stably on the cab.

In the present invention, it is preferable that a lateral frame extending in the left-right direction of the machine body along an upper end portion of the rear wall of the driving section is provided, and both left and right ends of the lateral frame are respectively supported by a longitudinal frame provided upright on the machine body frame.

According to this feature, the rigidity of the upper end portion of the rear wall of the driver's cabin is improved. The rear wall of the cab is supported by left and right longitudinal frames via a lateral frame. This enables the rear wall of the driver to be stably supported.

In the present invention, it is preferable that a rear window is provided in a rear wall of the cab, and a lower end portion of the rear window is placed and supported on an upper surface of the lateral frame.

According to this feature, the rear window can be stably placed and supported by the lateral frame having high rigidity in the rear wall of the cab.

In the present invention, it is preferable that a middle vertical frame is erected on the body frame between the vertical frame on the left side and the vertical frame on the right side, and a left-right middle portion of the lateral frame is supported on the middle vertical frame.

According to this feature, the rear wall of the cab is supported by the intermediate longitudinal frame via the transverse frame. This makes it possible to more stably support the rear wall of the driver's cab.

In the present invention, it is preferable that a longitudinal frame located on a lateral outer side of the machine body among the left longitudinal frame and the right longitudinal frame is provided with a tilting portion tilting downward and forward, and the cab is placed and supported on an upward surface of the tilting portion.

According to this feature, the cab can be supported by the longitudinal frame located laterally outside the machine body. In this case, the surface (mounting surface) of the inclined portion on which the cab is mounted and supported is ensured to be long in the front-rear direction, and the cab can be supported more stably by the cab.

In the present invention, it is preferable that an upper surface of the lateral frame is continuous with an upward surface of the inclined portion.

According to this feature, the mounting surface of the lateral frame is continuous with the mounting surface of the inclined portion. Thus, the cab is easily placed and supported on the cab without causing a height difference between the placement surface of the lateral frame and the placement surface of the inclined portion.

In the present invention, it is preferable that: an engine room provided below the driving part and accommodating an engine; and a dust cover that covers a side portion of the engine room on a lateral outer side of the engine room in a state in which ventilation is allowed and in a state in which passage of dust is blocked, an outer peripheral shape of a longitudinal frame located on the lateral outer side of the engine room is formed in a shape along the outer peripheral shape of the dust cover, and the longitudinal frame constitutes a receiving surface that receives the dust cover from the lateral outer side of the engine room.

According to this feature, the vibration-proof cover is received by the longitudinal frame located laterally outside. Thus, the dust cover can be stably supported.

In the present invention, it is preferable that a landing door is provided on a lateral side of the cab in a lateral direction of the cab, and a lower end portion of a door frame of the landing door is placed and supported on a floor portion of the cab.

According to this feature, the door frame can be stably supported.

[2]

The solution corresponding to the problem [2] is as follows.

The present invention is characterized by comprising: a driving unit having a driving seat; an engine room provided below the driving part and accommodating an engine; an engine cover that supports the driver seat and separates a riding space of the driver from the engine room; a radiator that is provided in the engine compartment at a lateral outer side of the engine body with respect to the engine and that radiates heat of engine cooling water; and a dust cover that covers the radiator from the outside of the body in a state in which ventilation is allowed and in a state in which passage of dust is prevented, wherein a dust cover frame is erected on the body frame, the dust cover frame constitutes a receiving surface that receives the dust cover from the outside of the body in the lateral direction, an outer peripheral shape of the dust cover frame is formed in a shape along the outer peripheral shape of the dust cover, and the dust cover frame extends to a height position above an upper end of the engine cover.

According to this feature, the dust cover frame extends to a height position above the upper end of the hood, whereby the dust cover is received by the receiving surface up to the upper portion. Thus, the antimagnetic shield can be stably supported.

Further, in the present invention, it is preferable that the dust cover frame is provided with: a front longitudinal frame portion constituting a front side portion of the dust cover frame; and a rear longitudinal frame portion constituting a rear portion of the dust cover frame, an upper end portion of the front longitudinal frame portion being coupled to an upper end portion of the rear longitudinal frame portion.

According to the present feature, the upper end portion of the front longitudinal frame portion is joined with the upper end portion of the rear longitudinal frame portion, whereby the front longitudinal frame portion and the rear longitudinal frame portion are integrated. This can improve the rigidity of the dust cover frame.

Further, in the present invention, it is preferable that the dust cover frame is provided with: an intermediate frame portion straddling the front and rear longitudinal frame portions at the same height position as that of the upper end portion of the hood; and a lower frame portion straddling a lower end portion of the front longitudinal frame portion and a lower end portion of the rear longitudinal frame portion.

According to the present feature, the front and rear longitudinal frame portions are integrated via the intermediate and lower frame portions. This can further improve the rigidity of the dust cover frame. In the dust cover frame, large openings are provided in the upper portion of the intermediate frame portion and in the portion between the intermediate frame portion and the lower frame portion, respectively. This makes it possible to easily perform maintenance in the engine room from the outside through the openings.

In the present invention, it is preferable that a first longitudinal frame supporting the rear portion of the hood is erected on the body frame at the rear of the driver's seat, and a lateral frame is provided so as to straddle the dust cover frame and the first longitudinal frame.

According to this feature, the rear portion of the hood can be stably supported. Further, the dust cover frame and the first longitudinal frame are integrated via the lateral frame. Thus, a frame structure having high rigidity can be constructed.

In the present invention, it is preferable that the first longitudinal frame extends to a height above an upper end of the hood, the lateral frame is provided so as to straddle the dust cover frame and the first longitudinal frame at a height above the upper end of the hood, and a rear wall is erected at a rear of the driver seat at an upper portion of the hood, and an upper portion of the rear wall is supported by the lateral frame.

According to the present feature, the dust cover frame, the first longitudinal frame, the transverse frame, and the rear wall are integrated. This can further improve the rigidity of the frame structure.

In the present invention, it is preferable that the steering section is provided with a side panel provided on a side opposite to a side on which the dust cover frame is provided with respect to the steering seat in a left-right direction of the vehicle body, a second longitudinal frame supporting a rear portion of the side panel is provided upright on the vehicle body frame, the second longitudinal frame extends to a height position higher than an upper end of the hood, and an upper end portion of the second longitudinal frame is connected to the lateral frame.

According to this feature, the rear portion of the side panel can be stably supported. Further, the dust cover frame, the first longitudinal frame, the lateral frame, and the second longitudinal frame are integrated. This can further improve the rigidity of the frame structure.

In the present invention, it is preferable that a third longitudinal frame is erected on the machine frame at the rear of the second longitudinal frame, the third longitudinal frame is connected to the threshing device, and the second longitudinal frame is connected to the third longitudinal frame.

According to this feature, the dust cap frame, the first longitudinal frame, the transverse frame, the second longitudinal frame, the third longitudinal frame, and the threshing device are integrated. This can further improve the rigidity of the frame structure.

In the present invention, it is preferable that the engine strainer is supported by the third vertical frame, and an air cleaner for the engine is provided behind the rear wall.

According to this feature, the strainer can be supported by the third longitudinal frame. Further, the strainer and the air cleaner are located close to each other. This shortens the air flow path between the strainer and the air cleaner.

In the present invention, it is preferable that the vehicle cab cover includes a cab that is mounted on and supported by the lateral frame.

According to this feature, the cab can be supported by the lateral frame, and the cab can be stably supported by the cab while ensuring air tightness in the cab.

In the present invention, it is preferable that the dust cover frame includes a cab that covers the cab, and the cab is mounted and supported on the dust cover frame.

According to this feature, the cab can be supported by the dust cover frame, and the cab can be stably supported by the cab while ensuring air tightness in the cab.

[3]

The solution corresponding to the problem [3] is as follows.

The present invention is characterized by comprising: a driving unit having a driving seat; an engine arranged below the driving seat; an engine cover having a roof panel for mounting and supporting the driver seat and covering the engine; and a driver's seat frame provided upright to the body frame and supporting the engine hood, the driver's seat and the roof being configured to be detachable with respect to the driver's seat frame.

According to this feature, the interior of the hood can be opened by detaching the driver seat and the roof panel. Thus, maintenance in the engine room can be easily performed. Further, the structure for opening the interior of the engine cover can be simplified as compared with a structure in which the engine cover is swung to switch between the normal posture and the maintenance posture.

In the present invention, it is preferable that a front wall is provided on the engine cover so as to straddle a front end portion of the roof panel and a rear end portion of a floor portion of the driver's cabin, and the front wall is configured to be detachable from the driver's cabin frame.

According to this feature, the interior of the hood can be further greatly opened by further detaching the front wall. This makes it possible to more easily perform maintenance in the engine room.

In the present invention, it is preferable that a portion on the entrance side of the driver in the corner portion formed by the roof panel and the front wall is formed as a chamfer, a front outer wall that blocks the chamfer is provided in the chamfer portion in the hood, and the driver seat, the roof panel, the front wall, and the front outer wall are configured to be integrally detachable with respect to the driver frame.

According to this feature, the driver can smoothly ride on and off the vehicle without being obstructed by the corner portion formed by the roof and the front wall when riding on and off the vehicle from the entrance. In addition, by integrally removing the driver seat, the roof panel, the front wall, and the front outer wall, the effort to separate them is not required.

Further, in the present invention, it is preferable that a detachable portion in the hood is provided with an armrest.

According to this feature, the armrest can be used as a handle when removing the detachable portion in the hood.

In the present invention, it is preferable that a check port is formed in the front wall, a cover is provided to cover the check port so as to be openable and closable, and a portion of the cover corresponding to the check port is formed of a double wall.

According to this feature, the transfer of hot air in the engine room from the inspection port into the riding space can be suppressed by the double wall.

Drawings

Fig. 1 is a right side view showing a combine harvester.

Fig. 2 is a plan view showing the combine harvester.

Fig. 3 is a right side view showing the cab.

Fig. 4 is a left side view showing the cab.

Fig. 5 is a rear view showing the cab.

Fig. 6 is a plan sectional view showing the cab.

Fig. 7 is a front cross-sectional view showing the cab.

Fig. 8 is a right side view showing a rotation switching mechanism for a cooling fan.

Fig. 9 is a rear view showing the sensor support.

Fig. 10 is a perspective view showing a state in which the driver seat and the hood are detached.

Fig. 11 is a perspective view showing a state in which the cab and the driver's portion are separated.

Fig. 12 is a right side cross-sectional view showing a state in which the cab and the driver's portion are separated.

Fig. 13 is a right side view showing the leaf spring structure of the body frame.

Fig. 14 is a perspective view showing an engine cover according to another embodiment.

Fig. 15 is a plan view showing the unmanned aerial vehicle accommodating section.

Detailed Description

Embodiments for carrying out the present invention will be described based on the drawings. In the following description, the direction of the arrow F is referred to as "front side of the machine body" (see fig. 1 and 2), the direction of the arrow B is referred to as "rear side of the machine body" (see fig. 1 and 2), the direction of the arrow L is referred to as "left side of the machine body" (see fig. 2), and the direction of the arrow R is referred to as "right side of the machine body" (see fig. 2).

(integral Structure of combine harvester)

A full-feed combine is shown in fig. 1 and 2. The combine comprises a body frame 1 and a pair of left and right crawler travel devices 2. A harvesting part 3 for harvesting the plant standing grain rod is arranged in front of the travelling machine body. The harvesting unit 3 is provided with a raking drum 4 for raking the plant stalks, a harvesting blade 5 for cutting the plant stalks, and a raking auger 6 for raking the harvesting stalks.

A cab 7 is provided on the right side of the front portion of the traveling machine body. The cab 7 is provided with a cab 8 for a driver to ride on and a cab 9 covering the cab 8. An engine room ER is provided below the driving portion 8. A threshing device 10 for threshing the harvesting stalks is arranged behind the harvesting part 3. A conveying device 11 for conveying the harvesting stalks to the threshing device 10 is provided so as to straddle the harvesting part 3 and the threshing device 10. The grain storage box 12 for storing the grains after threshing is arranged laterally and side by side with the threshing device 10. A grain discharging device 13 is provided for discharging grains in the grain storage tank 12 to the outside. The grain storage box 12 is swingably opened and closed about an axis Z1 extending in the up-down direction between a working position and a maintenance position.

The engine room ER accommodates: an exhaust gas purifying device 14 that purifies the engine E and exhaust gas of the engine E; a radiator 15 that radiates engine cooling water; and a cooling fan 16 for cooling the radiator 15. The riding space of the cab 8 and the engine room ER are partitioned by a hood 17 covering the engine E. A dust cover 18 is provided, and the dust cover 18 covers the radiator 15 and the right side portion of the engine room ER in a state that allows ventilation from the right and prevents dust from passing through.

(cab)

As shown in fig. 3 to 7, the cab 9 is provided with a roof 19, a front window glass 20, a landing door 21, a left window 22, a rear window 23, and a right window 24. The landing door 21 is provided on the right side of the cab 9. The rear portion of the landing door 21 is swingably supported on a rear pillar 26 via a pair of upper and lower hinges 25. A door frame 27 to which the landing door 21 is fitted is provided in an opening corresponding to the landing door 21 in the right side portion of the cab 9.

The left window 22 is provided on the left side of the cab 9. A left glass 28 and a left window frame 29 are provided in the left window 22. The rear window 23 is provided in the rear wall 9A of the cab 9. The rear window 23 is provided with a rear glass 30 and a rear window frame 31. The right window 24 is provided in a portion of the right side portion of the cab 9 on the rear side of the landing door 21. A right glass 32 and a right window frame 33 are provided in the right window 24.

The hinge 25 is provided with a shaft portion 34 and a cylindrical portion 35 through which the shaft portion 34 is inserted. The shaft 34 is fixed to the rear of the entrance 21. The cylindrical portion 35 is fixed to the rear pillar 26. The cylindrical portion 35 is provided with a stopper 36 for preventing the swing of the landing door 21 to the opening side to a certain extent or more. The shaft 34 is inserted into the cylindrical portion 35 from above. The lower end opening of the cylindrical portion 35 is opened downward. According to this structure, rainwater is less likely to enter the inside of the cylindrical portion 35 from the upper end opening of the cylindrical portion 35, and even if rainwater enters the inside of the cylindrical portion 35, it is discharged to the outside from the lower end opening of the cylindrical portion 35. Thus, rainwater does not stay in the cylindrical portion 35, and rust can be suppressed.

(driver's part)

As shown in fig. 3 to 7, the driver seat 37, the front panel 38, and the side panels 39 are provided in the driver section 8. A front cover 40 is provided at the front of the driver section 8. A landing port 41 is provided on the right side of the driving unit 8. The floor portion of the driving portion 8 is constituted by a plate 42. An air cleaner chamber AR is provided behind a rear wall 8A of the cab 8 at the rear of the cab 8. An air cleaner 43 for the engine E is accommodated in the air cleaner chamber AR.

The front panel 38 is provided with a steering lever 44 and an instrument panel 45. The steering lever 44 performs steering operations of the traveling machine body, lifting operations of the harvesting unit 3, and the like. The side panel 39 is provided on the left side with respect to the driver seat 37. The side plate 39 is provided with a main shift lever 46 for shifting a main transmission (not shown), a sub shift lever 47 for shifting a sub transmission (not shown), and a clutch switching lever 48 for switching a work machine clutch (e.g., a harvesting clutch, a threshing clutch, etc.). The side panel 39 is provided with a side panel frame 49 constituting the side panel 39.

The rear wall 8A of the driving portion 8 is provided with: the inclined wall portion 50 is inclined forward and downward; and a lateral frame 51 supporting an upper end portion of the inclined wall portion 50 and extending in the left-right direction of the machine body along the upper end portion of the inclined wall portion 50. The inclined wall portion 50 is provided upright on an upper portion (roof 73) of the hood 17 rearward of the driver seat 37. A side wall portion 52 is provided at the right end portion of the inclined wall portion 50 so that dust outside the machine does not enter the cab 9 from the upper portion of the dust cover 18. The inclined wall portion 50 is integrally formed with the side wall portion 52.

(Engine room)

As shown in fig. 3 to 7, the exhaust gas purifying device 14 purifies the exhaust gas of the engine E by a DPF (diesel particulate filter: diesel particulate filter). The exhaust gas purifying device 14 is provided above the engine E below the side panel 39 in a posture in which the longitudinal direction thereof is along the front-rear direction of the machine body. The radiator 15 is provided on the right side with respect to the engine E, and is supported by a radiator frame 53. The cooling fan 16 is provided between the engine E and the radiator 15.

An oil cooler 54 for a hydrostatic continuously variable transmission (not shown) as the main transmission and an oil cooler 55 for a transmission M having the gear type auxiliary transmission and the like are provided on the right side of the radiator 15. An intercooler 56 for the engine E, a condenser 57 for an air conditioner (not shown), and a reservoir 58 are provided on the right side of the oil coolers 54, 55.

As shown in fig. 3, an upper portion of the intercooler 56 is supported to the radiator frame 53 via upper support members 59 on the front and rear sides. The upper support 59 is fixed to an upper portion of the radiator frame 53. An upper portion of intercooler 56 is secured to upper support 59 by bolts 60.

The lower portion of the intercooler 56 is supported to the radiator frame 53 via front and rear lower supports 61. The lower support 61 is secured to a lower portion of the intercooler 56 by bolts 62. The lower support 61 is fixed to the upper portion of the radiator frame 53 by bolts 63.

The front and rear sides of the condenser 57 are supported by the lower support 61 and the radiator frame 53 via side supports 64, respectively. The side supports 64 are fixed to both front and rear side portions of the condenser 57 by bolts 65, respectively. The side support 64 is fixed to the lower end of the lower support 61 and the lower portion of the radiator frame 53 by bolts 66. The reservoir 58 is fixed to the front side support 64 by bolts 67.

According to this structure, the intercooler 56 is detached together with the lower support 61 by detaching the bolts 60, 63, and the condenser 57 and the accumulator 58 are detached together with the side support 64 by detaching the bolts 66. This makes it possible to easily perform maintenance (maintenance around the oil coolers 54, 55, etc.).

As shown in fig. 8, a rotation switching mechanism 68 is provided, and the rotation switching mechanism 68 switches the rotation direction of the cooling fan 16 to a forward rotation direction in which air outside the machine body flows into the engine room ER through the dust cover 18 as cooling air and a reverse rotation direction in which air inside the engine room ER flows out of the machine body through the dust cover 18. The rotation switching mechanism 68 is provided with a swinging body 69, and the swinging body 69 can swing around the rotation axis of the cooling fan 16 between a normal position (a position of a solid line shown in fig. 8) and a reverse position (a position of a two-dot chain line shown in fig. 8). The swinging body 69 is positioned at the forward position to switch the rotation direction of the cooling fan 16 to the forward rotation direction. The rotation direction of the cooling fan 16 is switched to the reverse direction by the swinging body 69 being located at the reverse position.

A position detection sensor 70 that detects the position of the swinging body 69 is provided. The position detection sensor 70 is provided with a swing type sensor arm 70a. A metal elongated connecting member 71 (for example, a wire) is provided so as to connect the sensor arm 70a and the swinging body 69 together. A sensor support 72 is provided that supports the position detection sensor 70. The sensor support 72 is provided with a stopper portion 72a (see fig. 9) for stopping the sensor arm 70a so that the position detection sensor 70 is not assembled to the sensor support 72 at an erroneous angle. A portion of the sensor support 72 is bent to form a restraining portion 72a.

(Engine hood)

As shown in fig. 6 to 8 and 10, the hood 17 is provided with: a top plate 73 for mounting and supporting the driver seat 37; and a front wall 74 straddling the front end portion of the top plate 73 and the rear end portion of the plate 42. The hood 17 is supported by a hood framework 76. The top plate 73 is provided with a support portion 77 for supporting the driver seat 37 so as to be movable forward and backward. The driver seat 37 is configured to be detachable (detachable from the support portion 77) with respect to the roof plate 73. The corner portion formed by the top plate 73 and the front wall 74 is chamfered at the landing port 41 side. A chamfer portion in the hood 17 is provided with a front outer wall 75 that blocks the chamfer portion. In the present embodiment, the top plate 73, the front wall 74, and the front outer wall 75 are integrally formed.

A check port 74a is formed in the front wall 74. A cover 78 openably and closably covering the inspection port 74a is detachably attached to the front wall 74. A handrail 79 is provided on the front outer wall 75.

As shown in fig. 10, the hood 17 is configured to be detachable with respect to the hood framework 76. Specifically, the driver seat 37, the roof panel 73, the front wall 74, and the front outer wall 75 are configured to be integrally detachable with respect to the hood framework 76. The roof panel 73 is detachably fixed to the hood framework 76 by bolts 80. The lower end portion of the front wall 74 is detachably fixed to the rear end portion of the plate 42 by bolts 80. According to this structure, by detaching the hood 17 from the hood framework 76, the hood 17 can be taken out of the cab 9 in a state where the passenger door 21 is opened.

(dust cover)

As shown in fig. 1, 3 and 5, the dust cover 18 is provided with a mesh body 81 and a mounting frame 82 to which the mesh body 81 is attached. The rear portion of the dust cover 18 is supported by a dust cover frame 83 (vertical frame) so as to be swingable open and close about an axial center Z2 extending in the up-down direction. The upper portion of the dust cover 18 is formed in a shape tapered upward. This increases the suction area to improve the cooling effect and design. A decorative member (not shown) is attached to a surface (back surface) of the mounting frame 82 on a side facing the dust cover frame 83.

The mounting frame 82 is provided with a cover 84 that covers a portion of the mesh body 81 above the height position of the top plate 73 from the back side. The cover 84 is made of, for example, a net, a metal plate, or the like. With this structure, the outside air sucked from the portion of the dust cover 18 above the height of the top plate 73 is blocked by the cover 84, and flows into the engine room ER from the portion of the dust cover 18 below the height of the top plate 73. This can increase the amount of outside air introduced into the engine room ER.

(frame structure of driver's cabin)

As shown in fig. 3 to 6, 11 and 12, the cab frame 85 is erected on the body frame 1. The cab frame 85 is provided with a radiator frame 53, a hood frame 76, a dust cover frame 83, a first longitudinal frame 86 (intermediate longitudinal frame), a second longitudinal frame 87, a third longitudinal frame 88, a fourth longitudinal frame 89, and a lateral frame 51.

The radiator frame 53 is erected on the body frame 1 between the radiator 15 and the dust cover frame 83. The front bracket 90 and the rear bracket 91 are provided in a state protruding rightward from the right side portion of the body frame 1. The radiator frame 53 is erected on the front bracket 90 and the rear bracket 91. The right end portion of the hood framework 76 is coupled to the upper portion of the radiator framework 53 via a support 92.

The dust cover frame 83 is erected on the body frame 1 on the right side of the radiator frame 53. The dust cover frame 83 is erected on the front bracket 90 and the rear bracket 91. The outer peripheral shape of the dust cover frame 83 is formed in a shape along the outer peripheral shape of the dust cover 18, and is formed in a shape slightly larger than the outer peripheral shape of the dust cover 18. The upper portion of the dust cover frame 83 is formed in a shape tapered upward like the dust cover 18. The dust cover frame 83 forms a receiving surface for receiving the dust cover 18 from the lateral outside (right side) of the machine body. The dust cover frame 83 extends to a height position corresponding to the upper surface of the lateral frame 51.

The upper end of the dust cover frame 83 is connected to the right end of the lateral frame 51. The coupling bracket 93 fixed to the upper end portion of the dust cover frame 83 and the coupling bracket 94 fixed to the right end portion of the lateral frame 51 are bolted together in a state in which the coupling bracket 93 on the dust cover frame 83 side is abutted from the right to the coupling bracket 94 on the lateral frame 51 side.

The dust cover frame 83 is provided with: a front longitudinal frame portion 95 constituting a front side portion of the dust cover frame 83; a rear longitudinal frame portion 96 constituting a rear side portion of the dust cover frame 83; an intermediate frame portion 97 that spans upper and lower intermediate portions of the front longitudinal frame portion 95 and upper and lower intermediate portions of the rear longitudinal frame portion 96; and a lower frame portion 98 straddling the lower end portion of the front longitudinal frame portion 95 and the lower end portion of the rear longitudinal frame portion 96. The upper end of the front vertical frame portion 95 is connected to the upper end of the rear vertical frame portion 96. The intermediate frame portion 97 is located at the same height position as the top plate 73.

The front vertical frame portion 95 is provided with a side wall portion 99 connected to the hood 17 (the roof panel 73 and the front outer wall 75) in a state protruding forward from the front vertical frame portion 95. The front longitudinal frame portion 95 is provided with: an upper inclined portion 95a extending from an upper end portion of the front vertical frame portion 95 in a state inclined forward and downward; and a lower inclined portion 95b extending from a lower end portion of the upper inclined portion 95a in a state inclined forward and downward. The upper surface of the lateral frame 51 is continuous with the upward face of the upper inclined portion 95a, and the upward face of the upper inclined portion 95a is continuous with the upward face of the lower inclined portion 95 b.

Here, the air cleaner 43 is disposed in a frame above the intermediate frame portion 97 in the dust cover frame 83 in a side view. Thus, the hand can be extended from the outside of the body in the lateral direction to the air cleaner 43 in a state where the dust cover 18 is opened, and maintenance of the air cleaner 43 can be easily performed.

The first longitudinal frame 86 is erected on the body frame 1 behind the driver seat 37. Specifically, the first vertical frame 86 is provided upright on the body frame 1 at a position between the second vertical frame 87 and the dust cover frame 83 on the dust cover frame 83 side. The first longitudinal frame 86 extends to a height position above the top plate 73. Specifically, the first longitudinal frame 86 extends to a height position slightly below the lower surface of the lateral frame 51. The lower end portion of the first longitudinal frame 86 is bolted to the machine frame 1.

The upper end portion of the first vertical frame 86 is coupled to the lateral frame 51 via a coupling frame 100 extending forward from the upper end portion of the first vertical frame 86. The coupling bracket 101 fixed to the front end portion of the coupling frame 100 and the coupling bracket 102 fixed to the lateral frame 51 are bolted together in a state in which the coupling bracket 101 on the coupling frame 100 side is in contact with the coupling bracket 102 on the lateral frame 51 side from the left. An inclined frame 103 is provided to connect the first longitudinal frame 86 and the connecting frame 100 together.

The first longitudinal frame 86 supports the right side portion of the rear portion of the hood 17. The coupling bracket 104 fixed to the upper and lower intermediate portions of the first longitudinal frame 86 and the coupling bracket 105 fixed to the right side portion of the rear portion of the hood framework 76 are bolted in a state in which the coupling bracket 104 on the first longitudinal frame 86 side is in contact with the coupling bracket 105 on the hood framework 76 side from the rear.

The second longitudinal frame 87 is provided to the body frame 1 at the left Fang Shuli of the rear portion of the side panel 39. A notch 49a is formed in the left side portion of the rear portion of the side panel frame 49 so as not to interfere with the second longitudinal frame 87. The second longitudinal frame 87 extends to a height position above the top plate 73. Specifically, the second longitudinal frame 87 extends to a height position corresponding to the lower surface of the lateral frame 51. The lower end portion of the second longitudinal frame 87 is bolted to the body frame 1.

The upper end of the second longitudinal frame 87 is coupled to the left end of the lateral frame 51. The coupling bracket 106 fixed to the upper end portion of the second longitudinal frame 87 and the coupling bracket 107 fixed to the left end portion of the lateral frame 51 are bolt-fixed in a state where the coupling bracket 106 on the second longitudinal frame 87 side is brought into contact with the coupling bracket 107 on the lateral frame 51 side from the front.

The second longitudinal frame 87 supports the rear of the side panels 39. The connection bracket 108 fixed to the upper and lower intermediate portions of the second longitudinal frame 87 and the upper surface portion of the side panel frame 49 are bolted in a state in which the connection bracket 109 on the second longitudinal frame 87 side is in contact with the upper surface portion of the side panel frame 49 from above.

The second longitudinal frame 87 supports the left end portion of the rear portion of the hood 17. The coupling bracket 110 fixed to the upper and lower intermediate portions of the second longitudinal frame 87 and the coupling bracket 111 fixed to the left end portion of the hood framework 76 are bolted together in a state in which the coupling bracket 110 on the second longitudinal frame 87 side is in contact with the coupling bracket 111 on the hood framework 76 side from the left.

The third longitudinal frame 88 is erected on the body frame 1 rearward of the second longitudinal frame 87. The third longitudinal frame 88 extends to a height position above the top plate 73. Specifically, the third longitudinal frame 88 extends to a height position above the upper surface of the lateral frame 51. The lower end portion of the third longitudinal frame 88 is bolted to the machine frame 1. The strainer 112 for the engine E is supported at the upper end of the third vertical frame 88 via a support bracket 113.

The third longitudinal frame 88 is coupled to the right side wall of the threshing device 10 via a coupling frame 114 extending leftward from the upper portion of the third longitudinal frame 88. The coupling bracket 115 is fixed to the left end portion of the coupling frame 114. The connecting bracket 115 is bolted in a state of abutting against the right side wall of the threshing device 10 from the right.

The second and third longitudinal frames 87 and 88 are coupled via a coupling frame 116 extending in the machine body front-rear direction. The connection brackets 117 are fixed to the front and rear end portions of the connection frame 116, respectively. The front connecting bracket 117 is bolted in a state of abutting against the connecting bracket 118 fixed to the second vertical frame 87 from the rear. The rear connecting bracket 117 is bolted in a state of abutting from the front against the connecting bracket 119 fixed to the connecting frame 114.

The fourth longitudinal frame 89 is erected below the right side portion of the rear portion of the side panel frame 49 on the machine body frame 1. The fourth longitudinal frame 8 extends to a height position above the top plate 73. Specifically, the fourth longitudinal frame 89 extends to a height position corresponding to the upper surface portion of the side panel frame 49. The fourth longitudinal frame 89 supports the right portion of the rear of the side panel frame 49. The coupling bracket 120 fixed to the upper end portion of the fourth vertical frame 89 is bolted in a state of abutting against the upper surface portion of the side panel frame 49 from below.

The fourth longitudinal frame 89 supports the left side portion of the rear portion of the hood 17. The coupling bracket 121 fixed to the upper portion of the fourth longitudinal frame 89 and the coupling bracket 122 fixed to the left portion of the rear portion of the hood framework 76 are bolted together in a state in which the coupling bracket 121 on the fourth longitudinal frame 89 side is in contact with the coupling bracket 122 on the hood framework 76 side from the rear.

The transverse frame 51 is provided so as to straddle the dust cover frame 83, the first longitudinal frame 86, and the second longitudinal frame 87. The transverse frame 51 is formed of square tubes. The lateral frame 51 is provided at a height above the top plate 73 so as to straddle the dust cover frame 83, the first longitudinal frame 86, and the second longitudinal frame 87. Specifically, the lateral frame 51 is provided so as to straddle the dust cover frame 83, the first longitudinal frame 86, and the second longitudinal frame 87 at a height position corresponding to the upper end portion of the inclined wall portion 50. The left and right ends of the lateral frame 51 are supported by the second longitudinal frame 87 and the dust cover frame 83, respectively. The first vertical frame 86 is supported by left and right intermediate portions of the horizontal frame 51 (specifically, portions of the horizontal frame 51 closer to the dust cover frame 83 than the left and right centers).

(mounting support Structure of cab)

As shown in fig. 7, 11 and 12, the rear wall 9A of the cab 9 is provided with a rear window 23 and a lateral frame 123 extending in the left-right direction of the machine body along the lower end portion of the rear window frame 31. The lower end portion of the rear wall 9A of the cab 9 (specifically, the lower surface of the lateral frame 123) is placed and supported on the upper end surface of the rear wall 8A of the cab 8 (specifically, the upper surface of the lateral frame 51). A pad 124 is mounted on the lower surface of the transverse frame 123.

The lower end of the left side of the cab 9 is placed and supported on the upper surface of the inclined wall 50 and the upper surface of the side panel frame 49. Specifically, the rear lower corner (inclined edge) of the left side sash 29 is placed and supported on the upward surface of the inclined wall 50, and the lower edge of the left side sash 29 is placed and supported on the upper surface of the side panel frame 49. A gasket 124 is provided on the lower surface of the inclined edge portion of the left side window frame 29 and the lower surface of the lower edge portion of the left side window frame 29.

A notch 50a having a shape matching the shape of the side panel frame 49 is formed in the lower left corner of the inclined wall 50. In a state where the side panel frame 49 enters the notch portion 50a, an upward surface of the inclined wall portion 50 is continuous with an upper surface of the side panel frame 49. The side panel frame 49, the inclined wall portion 50, the lateral frame 51, and the lateral frame 123 extend to the left of the left side portion (left side window 22) of the cab 9. The left end position of the side panel frame 49, the left end position of the inclined wall portion 50, the left end position of the lateral frame 51, and the left end position of the lateral frame 123 are located at the same or substantially the same position.

The lower edge of the right sash 33 is placed on and supported by the upward surface of the upper inclined portion 95a of the dust cover frame 83 (front vertical frame portion 95). A gasket (not shown) is attached to the lower surface of the lower edge portion of the right sash 33.

The lower edge of the door frame 27 is placed on and supported by the upper surface of the right end portion of the plate 42. A gasket 124 is fitted to the lower surface of the lower edge portion of the door frame 27. A lower portion (inclined edge portion) of the rear portion of the door frame 27 is placed on and supported by an upward surface of a lower inclined portion 95b of the dust cover frame 83 (front vertical frame portion 95). A gasket (not shown) is mounted on the lower surface of the inclined edge portion of the door frame 27.

The lower end portion of the right side portion of the front cover 40 is placed on and supported by the upper surface of the receiving plate 125 fixed to the body frame 1. The lower surface of the lower end portion of the right side portion of the front cover 40 is swaged (not shown).

(other embodiments)

(1) As shown in fig. 13, the body frame 1 is provided with: a pair of left and right main frames 1A extending in the front-rear direction of the machine body; a plurality of left and right facing frames 1B provided so as to straddle the left main frame 1A and the right main frame 1A and extending in the left and right direction of the machine body; and a rear support frame 1C that is provided so as to straddle the left main frame 1A and the right main frame 1A and supports the rear portions of the left and right crawler traveling devices 2. The rear support frames 1C are located between the left and right facing frames 1B adjacent to each other in the front-rear direction of the machine body. According to this structure, the left-right facing frame 1B is located at a position away from the rigid portion (the portion near the rear support frame 1C) in the body frame 1. Thus, a leaf spring structure utilizing the elastic force of the body frame 1 (main frame 1A) itself can be realized, and the impact force to the body frame 1 can be relieved.

(2) In the above embodiment, the hood 17 is provided with the cover 78 that openably and closably covers the inspection port 74 a. However, the cover 78 is not limited to the structure of the above embodiment. For example, the cover 78 may be configured as shown in fig. 14. As shown in fig. 14, the cover 78 is formed of a substantially unitary sized sheet material that covers the front wall 74. An inner lid 78a that enters the inspection opening 74a is provided in a portion of the lid 78 corresponding to the inspection opening 74 a. That is, the portion of the cover 78 corresponding to the inspection port 74a is constituted by a double wall. According to this structure, a double wall is formed by lid 78, inner lid 78a, and front wall 74. This suppresses the influence of the hot air in the engine room ER from being transmitted from the front wall 74 and the inspection port 74a into the riding space. Further, by covering substantially the entire front wall 74 with the cover 78, designability can be improved.

(3) As shown in fig. 15, a drone housing 127 that houses the drone 126 may be provided. The unmanned aerial vehicle accommodation portion 127 is provided with a power supply device 127a for supplying power to the unmanned aerial vehicle 126. Fig. 15 illustrates a plurality of places where the unmanned aerial vehicle accommodating portion 127 is provided. In the example shown in fig. 15, the unmanned aerial vehicle accommodating portion 127 is provided at the upper portion of the cab 9 or the upper portion of the grain storage tank 12, the upper portion of the threshing device 10, the upper portion of the conveying device 11, and the upper portion of the harvesting portion 3. The unmanned aerial vehicle accommodating portion 127 may be provided at least any one of the plurality of places shown in fig. 15. The location shown in fig. 15 is an example, and the location where the unmanned aerial vehicle accommodating portion 127 is provided is not limited to the location shown in fig. 15.

(4) In the combine harvester, a portable terminal (e.g., a smart phone, a tablet computer, a notebook computer, etc.) may be configured to be able to be used as an auxiliary display (e.g., a rear display that displays an image of a rear camera, a side display that displays an image of a side camera, etc.). Here, as a scheme for using the portable terminal as an auxiliary display, for example, the following scheme can be considered.

The portable terminal is attached to the combine and used as an auxiliary display.

The portable terminal is directly connected to a camera (mounted on the combine harvester) and used as an auxiliary display.

The portable terminal is connected to a camera (mounted on the combine) via a control device (mounted on the combine) and is used as an auxiliary display. In this case, it may be configured to: when harvesting operation is performed, crop and operation information of the precision agricultural system are displayed on the portable terminal, and when the machine body is retracted, the portable terminal is used as a rear display, and when the grain discharge device discharges grains, an image of a camera for shooting the discharge state of the grains is displayed on the portable terminal. The portable terminal may also have a function of operating the operation unit of the body.

(5) In the above embodiment, the roof panel 73, the front wall 74, and the front outer wall 75 are configured to be integrally detachable with respect to the hood framework 76. However, the roof panel 73, the front wall 74, and the front outer wall 75 may be configured to be detachable with respect to the hood framework 76, respectively.

(6) In the above embodiment, the chamfer portion in the hood 17 is provided with the front outer wall 75 that blocks the chamfer portion. However, the corner portion formed by the ceiling 73 and the front wall 74 may not be chamfered at the side of the entrance 41, and the front outer wall 75 may not be provided.

(7) In the above embodiment, the armrest 79 is provided on the front outer wall 75 in the hood 17. However, the armrest 79 may be provided in a detachable portion (the roof panel 73, the front wall 74) other than the front outer wall 75 in the hood 17. Alternatively, the armrest 79 may not be provided in the hood 17.

(8) In the above embodiment, the intermediate frame portion 97 straddles the front and rear longitudinal frame portions 95 and 96 at the same height position as that of the top plate 73. However, the intermediate frame 97 may be disposed above the top plate 73 so as to straddle the front and rear longitudinal frame 95 and 96. Alternatively, the intermediate frame portion 97 may be disposed so as to straddle the front and rear longitudinal frame portions 95 and 96 at a height lower than the top plate 73. Alternatively, the dust cover frame 83 may not be provided with the intermediate frame portion 97.

(9) In the above embodiment, the third and fourth longitudinal frames 88 and 89 are provided in the cab frame 85. However, the third and fourth longitudinal frames 88 and 89 may not be provided to the cab frame 85.

(10) In the above embodiment, the upward surface of the inclined wall portion 50 is continuous with the upper surface of the side panel frame 49. However, the upward surface of the inclined wall portion 50 and the upper surface of the side panel frame 49 may be discontinuous.

(11) In the above embodiment, the inclined wall portion 50, the lateral frame 51, and the lateral frame 123 extend to the left side of the cab 9. However, the inclined wall portion 50, the lateral frame 51, and the lateral frame 123 may not extend to the left of the left side of the cab 9.

(12) In the above embodiment, the inclined wall portion 50 is provided in the rear wall 8A of the driver's cabin 8. However, instead of the inclined wall portion 50, a vertical wall portion may be provided in the rear wall 8A of the driver's cabin 8.

(13) In the above embodiment, the cover 84 is provided on the dust cover 18, but the cover 84 may not be provided on the dust cover 18.

(14) In the above embodiment, the stopper portion 72a is provided in the sensor support 72, but the stopper portion 72a may not be provided in the sensor support 72.

The present invention is not limited to the above-described embodiment and the other embodiments, and various modifications other than the above-described embodiments are possible.

Industrial applicability

The invention can be used for semi-feeding type combine besides full-feeding type combine.

Description of the reference numerals

1. Frame of machine body

8. Driving part

Rear wall of 8A driver

9. Cab

Rear wall of 9A cab

10. Threshing device

15. Radiator

17. Engine hood

18. Dust cover

21. Landing door

22. Left side window (side window)

23. Rear window

27. Door frame

29. Left side window frame (Window frame)

37. Driving seat

39. Side panel

42. Board (floor part)

43. Air filter

49. Side panel frame

50. Inclined wall (rear wall)

51. Transverse frame

73. Top plate

74. Front wall

74a inspection port

75. Front outer wall

78. Cover for a container

79. Armrest (Armrest)

83. Dust cover frame (longitudinal frame)

85. Driving part frame

86. First longitudinal frame (middle longitudinal frame)

87. Second longitudinal frame (longitudinal frame)

88. Third longitudinal frame

95. Front longitudinal frame part

95a upper inclined portion (inclined portion)

95b inclined portion (inclined portion)

96. Rear longitudinal frame portion

97. Intermediate frame part

98. Lower frame part

112. Coarse filter

E engine

ER engine compartment.

Claims (26)

1. A combine harvester is characterized by comprising:

a driving unit having a driving seat;

a cab covering the cab and having a landing door for opening and closing the entrance,

an engine arranged below the driving seat;

an engine cover having a roof panel for mounting and supporting the driver seat and covering the engine; and

a cab frame erected on the body frame and supporting the engine hood,

the driver seat and the roof are configured to be detachable with respect to the driver frame,

the combine is configured to take out the driver seat and the roof panel detached from the driver frame to the outside of the driver's cabin through the doorway in a state where the passenger door is opened,

the combine harvester comprises:

an engine room provided below the driving part and accommodating the engine;

a radiator that is provided in the engine compartment at a lateral outer side of the engine body with respect to the engine and that radiates heat of engine cooling water; and

a dust cover which covers the radiator from the lateral outside of the machine body in a state of allowing ventilation and in a state of preventing dust from passing through,

The engine cover separates a riding space of the cab from the engine room,

a dust cover frame is vertically arranged on the machine body frame, the dust cover frame forms a bearing surface for bearing the dust cover from the transverse outside of the machine body,

the outer peripheral shape of the dust cover frame is formed in a shape along the outer peripheral shape of the dust cover, and the dust cover frame extends to a height position on the upper side than the upper end of the engine cover,

the dust cover frame is provided with: a front longitudinal frame portion constituting a front side portion of the dust cover frame; and a rear longitudinal frame portion constituting a rear side portion of the dust cover frame.

2. A combine harvester according to claim 1, characterized in that,

the engine cover is provided with a front wall which spans the front end part of the top plate and the rear end part of the floor part of the driving part,

the front wall is configured to be detachable with respect to the cab frame.

3. A combine harvester according to claim 2, characterized in that,

a portion on the entrance side of the driving portion in a corner portion constituted by the roof panel and the front wall is formed as a chamfer,

a chamfer portion in the engine cover is provided with a front outer wall that blocks the chamfer portion,

The driver seat, the roof panel, the front wall, and the front outer wall are configured to be integrally detachable with respect to the driver frame.

4. A combine harvester according to claim 3, characterized in that,

a removable portion in the hood is provided with an armrest.

5. A combine harvester according to any one of claims 2 to 4, characterized in that,

a ping port is formed in the front wall,

a cover which can cover the checking opening in an opening and closing way is arranged,

the portion of the cover corresponding to the inspection opening is formed by a double wall.

6. The combine harvester of claim 1, wherein,

the lower end of the rear wall of the cab is placed and supported on the upper end surface of the rear wall of the cab.

7. A combine harvester according to claim 6, characterized in that,

the rear wall of the driving part is provided with an inclined wall part inclined forward and downward,

the cab is supported on the upward surface of the inclined wall portion.

8. A combine harvester according to claim 7, characterized in that,

the driver's seat is provided with a side panel arranged at one side of the left and right direction of the machine body,

the cab is placed and supported on the upper surface of a side panel frame constituting the side panel,

An upward face of the inclined wall portion is continuous with an upper surface of the side panel frame.

9. A combine harvester according to claim 8, characterized in that,

a side window is arranged on the side part of the side panel on the side of the cab,

the lower end of the window frame in the side window is placed and supported on the upper surface of the inclined wall portion and the upper surface of the side panel frame.

10. A combine harvester according to claim 8 or 9, characterized in that,

the rear wall of the cab and the side panel frame extend to a position outside the cab.

11. Combine harvester according to any one of the claims 6 to 9, characterized in that,

a transverse frame extending in the left-right direction of the machine body along the upper end of the rear wall of the driving part is provided,

the left end and the right end of the transverse frame are respectively supported on a longitudinal frame which is vertically arranged on the machine body frame.

12. A combine harvester according to claim 11, characterized in that,

a rear window is arranged on the rear wall of the cab,

the lower end of the rear window is placed and supported on the upper surface of the transverse frame.

13. A combine harvester according to claim 11, characterized in that,

A middle longitudinal frame is vertically arranged between the left longitudinal frame and the right longitudinal frame on the machine body frame,

the middle longitudinal frame supports the left and right middle portions of the lateral frame.

14. A combine harvester according to claim 11, characterized in that,

the longitudinal frames located on the lateral outside of the machine body in the longitudinal frames on the left side and the longitudinal frames on the right side are provided with inclined portions inclined downward and forward,

the cab is placed and supported on an upward surface of the inclined portion.

15. A combine harvester according to claim 14, characterized in that,

an upper surface of the lateral frame is continuous with an upward facing surface of the inclined portion.

16. A combine harvester according to any one of claims 1 to 4, characterized in that,

the dust cover covers a lateral portion of the engine room on a lateral outer side of the engine body in a state that allows ventilation and in a state that prevents dust from passing through.

17. A combine harvester according to any one of claims 1 to 4, characterized in that,

a landing door is arranged at the lateral part of the lateral outside of the machine body in the cab,

the lower end of the door frame of the landing door is placed and supported on the floor portion of the driving portion.

18. A combine harvester according to any one of claims 1 to 4, characterized in that,

an upper end portion of the front longitudinal frame portion is coupled to an upper end portion of the rear longitudinal frame portion.

19. The combine harvester of claim 18, wherein the harvester is configured to combine,

the dust cover frame is provided with: an intermediate frame portion straddling the front and rear longitudinal frame portions at the same height position as that of the upper end portion of the hood; and a lower frame portion straddling a lower end portion of the front longitudinal frame portion and a lower end portion of the rear longitudinal frame portion.

20. A combine harvester according to any one of claims 1 to 4, characterized in that,

a first longitudinal frame supporting a rear portion of the hood is erected on the body frame at a rear portion of the cab,

a transverse frame is provided straddling the dust cover frame and the first longitudinal frame.

21. The combine harvester of claim 20, wherein the harvester is configured to combine,

the first longitudinal frame extends to a height position above the upper end of the hood,

the lateral frame is provided at a height position on the upper side of the upper end of the hood so as to straddle the dust cover frame and the first longitudinal frame,

A rear wall is erected on an upper portion of the hood at a rear of the driver seat,

an upper portion of the rear wall is supported by the transverse frame.

22. The combine harvester of claim 20, wherein the harvester is configured to combine,

the side panel is provided on the side opposite to the side of the dust cover frame with respect to the driver seat in the left-right direction of the body,

a second longitudinal frame supporting the rear portion of the side panel is vertically provided to the body frame,

the second longitudinal frame extends to a height position above the upper end of the hood,

the upper end of the second longitudinal frame is coupled to the transverse frame.

23. The combine harvester of claim 22, wherein the combine harvester is configured to combine,

a third longitudinal frame is vertically arranged on the machine body frame at the rear of the second longitudinal frame,

the third longitudinal frame is connected with the threshing device,

the second longitudinal frame is coupled to the third longitudinal frame.

24. The combine harvester of claim 23, wherein the harvester is configured to combine,

the strainer for the engine is supported by the third longitudinal frame,

a rear wall is erected on an upper portion of the hood at a rear of the driver seat,

An air cleaner for the engine is provided behind the rear wall.

25. The combine harvester of claim 20, wherein the harvester is configured to combine,

the cab is supported by the lateral frame.

26. A combine harvester according to any one of claims 1 to 4, characterized in that,

the cab is supported by the dust cover frame.