JP2015122974A - Harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvesting machine that can reduce sense of pressure felt by an operator due to a ceiling part inside a cabin.SOLUTION: The harvesting machine includes: the cabin on which an operator boards; an air conditioner unit 70 for performing air conditioning inside the cabin; and a pre-cleaner 110 for an engine. The air conditioner unit 70 is internally installed backward of a roof part 80 of the cabin and the pre-cleaner 110 is disposed on one side of the right and left sides relative to the air conditioner unit 70.

Description

  The present invention relates to a harvesting machine including a cabin on which a driver is boarded and an air conditioner unit that air-conditions the cabin.

  As such a harvesting machine, for example, a combine described in Patent Document 1 is already known. In the combine described in Patent Literature 1, the air conditioner unit (in the literature, the air conditioner [31]) is placed in the front portion of the roof portion (in the literature, the ceiling portion [25]) of the cabin (in the literature, the operation cabin [6]). Decorated.

Japanese Patent Application Laid-Open No. 2004-114749

  In the conventional combine, the air conditioning unit is located at the front portion in the roof portion, so that the space on the front side of the driver is narrowed, so that the driver is likely to feel pressure from the ceiling portion in the cabin. For example, when a driver looks into the lower part of the front of the aircraft in a forward-bending posture in order to visually recognize the state of cereal conveyance, cut marks, etc., the head is likely to hit the ceiling in the cabin.

  In view of the above situation, there is a demand for a harvesting machine that can reduce the feeling of pressure on the driver by the ceiling in the cabin.

The feature of the present invention is that
A cabin on which the driver is boarded;
An air conditioner unit for air conditioning the cabin;
A precleaner for the engine,
The air conditioner unit is installed in a rear portion of the roof portion of the cabin,
The pre-cleaner is disposed on one side of the air conditioner unit.

  According to this characteristic configuration, since the air-conditioner unit is arranged at the rear part in the roof part, the space above the driver's head can be widened, so that the feeling of pressure on the driver by the ceiling part in the cabin is provided. Can be reduced. For example, it is difficult for the driver to hit his head against the ceiling in the cabin when the driver looks into the lower front of the aircraft in a forward-bent posture in order to visually check the grain transport status, cut marks, and the like. In addition, since the precleaner is disposed on the left or right side with respect to the air conditioner unit, the air conditioner unit and the precleaner do not interfere even when the air conditioner unit is disposed at the rear portion in the roof portion.

Furthermore, in the present invention,
The air conditioner unit is arranged offset to the left and right other side in the roof portion,
It is preferable that the precleaner is disposed on the opposite side to the roof portion where the air conditioner unit is offset.

  According to this characteristic configuration, a wide space can be created on the side opposite to the side where the air conditioner unit is offset, and the pre-cleaner can be arranged using the space.

Furthermore, in the present invention,
The precleaner is preferably supported by the roof portion.

  According to this characteristic configuration, even when the precleaner is provided so as to protrude outward from the roof portion, the precleaner is more stably supported by the roof portion than when the precleaner is supported by the dedicated bracket. In addition to being able to support, it is easy to ensure the degree of freedom of arrangement of the precleaner.

Furthermore, in the present invention,
In the roof portion, a retraction portion that is retreated inward with respect to other portions of the outer surface of the roof portion is formed,
It is preferable that the precleaner is disposed so as to enter the retraction portion.

  According to this characteristic configuration, the precleaner can be protected by the roof portion by allowing the precleaner to enter the retraction portion.

Furthermore, in the present invention,
It is preferable that the upper end of the precleaner is located below the upper end of the roof portion in a side view in a state where the precleaner is arranged so as to enter the retraction portion.

  According to this characteristic configuration, the upper portion of the precleaner can be protected by the roof portion from an object approaching from above the precleaner.

Furthermore, in the present invention,
The retraction part is preferably formed so that the upper surface of the roof part is recessed downward.

  According to this characteristic configuration, the side portion of the precleaner can be protected by the roof portion by inserting the precleaner into the retracting portion that is recessed downward.

Furthermore, in the present invention,
It is preferable that the retraction portion is formed by notching an end portion of the roof portion.

  According to this feature configuration, the retraction portion can be easily formed by merely forming the end portion of the roof portion by notching.

Furthermore, in the present invention,
It is preferable that the lower end of the portion corresponding to the retraction portion of the roof portion is located at the lowest position in the roof portion.

  According to this characteristic configuration, the precleaner is inserted into the retraction portion after the retraction portion is formed so that the depth of the recess is deeper than the thickness of the portion different from the retraction portion of the roof portion. Thus, the precleaner can be reliably protected by the roof portion.

Furthermore, in the present invention,
It is preferable that a communication portion that communicates the air cleaner side for the engine and the precleaner side is provided in the retraction portion.

  When the communication part is not provided in the retraction part, it is necessary to prepare a means for connecting the pre-cleaner and the air cleaner in communication. According to this characteristic configuration, since the communication portion is provided in the retraction portion, the air cleaner and the precleaner can be easily connected to each other.

Furthermore, in the present invention,
It is preferable that the retraction portion is formed so that substantially all of the precleaner is exposed in a side view.

  According to this characteristic configuration, the precleaner can be easily accessed from the side surface direction even if the precleaner enters the retraction portion. In other words, the pre-cleaner can be easily accessed from the side surface during maintenance or the like.

Furthermore, in the present invention,
It is preferable that the retraction portion is formed so that substantially all of the precleaner is exposed in a rear view.

  According to this characteristic configuration, the precleaner can be easily accessed from the back side even if the precleaner enters the retraction portion. In other words, the pre-cleaner can be easily accessed from the back side during maintenance or the like.

Furthermore, in the present invention,
It is preferable that a vertical wall portion extending in the vertical direction is formed in the retraction portion.

  According to this characteristic configuration, the precleaner can be protected by the vertical wall portion in the vertical direction.

Furthermore, in the present invention,
It is preferable that a suction port for sucking outside air supplied to the air conditioner unit is formed on the opposite side of the roof portion to the left and right of the air conditioner unit with respect to the pre-cleaner.

  According to this characteristic configuration, since the suction port is located in the vicinity of the air conditioner unit, the supply of outside air from the suction port to the air conditioner unit is smooth.

Furthermore, in the present invention,
The air conditioner unit has a heat exchanger and a fan for blowing air to the heat exchanger in a state of being arranged in the left-right direction,
It is preferable that a suction port for sucking outside air supplied to the air conditioner unit is formed on the fan side with respect to the air conditioner unit in the left-right direction in the roof portion.

  According to this characteristic configuration, since the suction port is located in the vicinity of the fan, the supply of outside air from the suction port to the air conditioner unit is smooth.

Furthermore, in the present invention,
Of the roof part, the side part opposite to the left and right of the pre-cleaner with respect to the air conditioner unit protrudes to the left and right opposite side,
It is preferable that the suction port is formed in a protruding portion of the roof portion.

  According to this characteristic configuration, clean air flowing on the lateral side of the roof portion can be sucked in by the suction port.

Furthermore, in the present invention,
It is preferable that the suction port is formed at the bottom of the protruding portion of the roof portion.

  According to this characteristic configuration, the suction port does not face upward, so that dust does not fall into the suction port and accumulate in the suction port.

Furthermore, in the present invention,
A cover is attached in a state of being spaced downward with respect to the suction port,
It is preferable that the outside air is sucked from the side between the cover and the suction port.

  According to this feature, if the outside air is sucked in from the side between the cover and the suction port, it is compared with the method in which the outside air is sucked by the suction port exposed outside (the suction port not covered by the cover). Thus, since the opening area is small, the flow rate of the outside air sucked by the suction port is increased. Therefore, the suction of the outside air through the suction port is smooth.

Furthermore, in the present invention,
The pre-cleaner is disposed on the laterally outer side of the roof portion,
It is preferable that the suction port is disposed inside the machine body of the roof portion.

  According to this feature configuration, clean air that flows on the inner side of the machine body with less dust compared to the outer side of the machine body can be sucked in by the suction port. In addition, since the pre-cleaner cleans the air containing dust in the first place, it can be considered that there is no problem even if it is arranged on the outer side of the fuselage that is slightly more dusty than the inner side of the fuselage.

Furthermore, in the present invention,
Behind the cabin, a grain storage unit for storing the grain is provided,
A threshing device for threshing the harvested cereal rice bran in a state aligned in the left-right direction with the grain storage unit,
It is preferable that a step for raising and lowering is provided in a portion of the front portion of the threshing device closer to the outside of the machine body.

  According to this characteristic configuration, the step for raising and lowering is provided on the front side of the threshing device on the outer side of the machine body, so that the step can be easily used on the threshing apparatus from the outside of the machine body of the threshing apparatus. Can rise. That is, if it is from the outside of the machine body of the threshing device, it is easy to pass through the space because it is open to the outside of the machine body.

It is a right view which shows a normal type combine. It is a top view which shows a normal type combine. It is a right view which shows a cabin. It is a rear view which shows a cabin. It is a front view which shows a cabin. It is a plane sectional view showing a cabin. It is right side sectional drawing which shows a cabin. (A) It is right side sectional drawing which shows the front part of a roof part. (B) It is a disassembled perspective view which shows the attachment structure of a motor. It is right side sectional drawing which shows the front-end part in the floor part of a cabin. (A) It is a front view which shows the connection structure of a side panel and an instrument panel. (B) It is a left view which shows the connection structure of a side panel and an instrument panel. (A) It is side surface sectional drawing which shows the airtight structure of a transmission lever. (B) It is front sectional drawing which shows the airtight structure of a transmission lever. It is a plane sectional view showing a roof part. It is a plane sectional view showing the rear part of a roof part. It is right side sectional drawing which shows the rear part of a roof part. It is a perspective view which shows an aperture_diaphragm | restriction part. It is front sectional drawing which shows a suction inlet. (A) It is a figure which shows the state which the shutter has closed the internal air inlet. (B) It is a figure which shows the state which the shutter has closed the external air inlet. It is a right view which shows the state which has arrange | positioned the precleaner in the recessed part. It is a rear view which shows the state which has arrange | positioned the precleaner in the recessed part. (A) It is a side view which shows the support structure of a compressor. (B) It is a top view which shows the support structure of a compressor. (A) It is side surface sectional drawing which shows the airtight structure of the operation lever which concerns on 1st another embodiment. (B) It is plane sectional drawing which shows the airtight structure of the operation lever which concerns on 1st another embodiment. It is a disassembled perspective view which shows the airtight structure of the operation lever which concerns on 1st another embodiment. It is a disassembled perspective view which shows the airtight structure of the operation lever which concerns on 2nd another embodiment. (A) It is a top view which shows arrangement | positioning of the pre cleaner which concerns on 1st another embodiment. (B) It is a top view which shows arrangement | positioning of the pre cleaner which concerns on 2nd another embodiment. (C) It is a top view which shows arrangement | positioning of the pre cleaner which concerns on 3rd another embodiment.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated based on drawing.

[Overall configuration of ordinary combine]
1 and 2 show an ordinary combine. At the front part of the combine, there is a cutting part 1 for cutting the planted cereal. The reaping unit 1 includes a pair of left and right weeding tools 2 that divide the planted cereal into a culm that is to be harvested and a cereal that is not to be harvested, a cutting device 3 that cuts the planted cereal, and the harvested cereal A scratching auger 4 is provided. A crawler type traveling device 5 for traveling the machine body is provided behind the cutting unit 1. An airframe frame 6 is provided on the upper part of the traveling device 5. On the left side of the machine body frame 6, a threshing device 7 for threshing the harvested cereal meal is provided.

  A cabin 8 and an engine 9 on which a driver gets on are provided on the right front portion on the body frame 6. A grain tank 10 (corresponding to a “grain storage unit” according to the present invention) that stores the grain is provided in a state of being lined up with the threshing device 7 in the left-right direction at the right rear part on the machine body frame 6. The grain tank 10 is provided with an unloader 11 for taking out the grains in the grain tank 10. The unloader 11 is supported by the unloader receiver 12.

〔cabin〕
As shown in FIGS. 3 to 7, a windshield 13 is provided on the front surface of the cabin 8. On the left side of the cabin 8, a front-rear sliding window 14 is provided. A fixed window 16 is provided on the rear wall 15.

  The window portion 16 is fitted into the opening of the rear wall portion 15 via an H rubber 17 and is fixed by a wedge rubber 18. Thus, conventionally, when the window portion 16 is bonded, a waiting time until the adhesive dries and a dam dam for the adhesive are necessary. However, since these are unnecessary, the number of manufacturing steps can be reduced. .

  A door 19 that can be opened and closed is provided on the right side of the cabin 8. The rear end of the door 19 is supported so as to be swingable about a vertical axis. The door 19 is provided with a front-and-back sliding window 20. Further, a handrail 21 for getting on and off is provided at the front end of the right side of the cabin 8. A rearview mirror 22 is attached to the handrail 21.

  A pair of left and right front vertical frames 24 that extend in the vertical direction and support the front portion of the roof portion 80 are provided at the front portion of the cabin 8. A pair of left and right rear vertical frames 25 that extend in the vertical direction and support the rear portion of the roof portion 80 are provided at the rear portion of the cabin 8. The left and right sides of the rear wall portion 15 are connected to the pair of left and right rear vertical frames 25, respectively. The lower ends of the pair of left and right rear vertical frames 25 are connected by a horizontal frame 26 extending in the left-right direction. The lower end of a pair of left and right rear vertical frames 25 is connected to the upper surface of the horizontal frame 26. The horizontal frame 26 extends in the left-right direction from the pair of left and right rear vertical frames 25. A right end portion of the horizontal frame 26 is formed to be bent forward, and is connected to the door 19 to the frame.

  In the cabin 8, there are a driver seat 27 on which a driver sits, a steering lever 28 for steering the aircraft, an instrument panel 30 in which instruments 29 are arranged, and a side panel 31. Is provided. In the cabin 8, a middle space S <b> 1 that is a space in front of the driver seat 27, a right space S <b> 2 that is an obliquely lower right front space of the driver seat 27, and a left space S <b> 3 that is an obliquely lower left front space of the driver seat 27. Is formed. A floor mat 32 is laid on the floor 49 in the cabin 8. A rising portion 33 is formed at the front end of the floor mat 32.

[Side panel]
The side panel 31 is disposed on the left side in the cabin 8 (left side with respect to the driver seat 27). The side panel 31 is provided with a transmission lever 34, a clutch lever 35, a side operation panel 36, an unloader remote controller 37, and the like. The transmission lever 34, the clutch lever 35, the side operation panel 36, and the unloader remote controller 37 correspond to “operating tools” according to the present invention. The shift lever 34 is for performing a shift operation of a hydrostatic continuously variable transmission (not shown) that shifts the power from the engine 9. The clutch lever 35 is for performing a switching operation of a clutch (not shown) that transmits or blocks power to the threshing device 7 and a switching operation of a clutch (not illustrated) that transmits or blocks power to the reaping unit 1. is there. The unloader remote controller 37 is for operating the unloader 11.

[Instrument panel]
The instrument panel 30 is arranged on the left side in the cabin 8 (left side with respect to the driver seat 27). The instrument panel 30 is provided with, for example, a working speed meter 38 that displays an actual working vehicle speed as a measuring instrument 29 at the center, and an engine tachometer 39 and a fuel gauge 40 on both sides thereof. The instrument panel 30 is connected to the front end portion of the side panel 31 in a cantilever manner via a stay 41 so as to protrude from the front end portion of the side panel 31 toward the front right side.

[Steering lever]
The steering lever 28 is disposed on the right side in the cabin 8 (right side with respect to the driver seat 27). The steering lever 28 is cantilevered on the right side of the pair of left and right front vertical frames 24. Specifically, the power steering unit 42 is fixed to the right side of the pair of left and right front vertical frames 24, and the steering lever 28 is supported by the power steering unit 42 so as to be swingable in the cross direction (front-rear direction and left-right direction). Has been. The power steering unit 42 is provided with a key switch 43 and a combination switch 44, and an armrest 45 for a driver who operates the steering lever 28 to place his / her wrist.

〔windshield〕
The windshield 13 extends over the upper end portion and the lower end portion of the front surface of the cabin 8. The windshield 13 is made of a single tempered glass, but may be made of a single laminated glass. The windshield 13 extends from the roof portion 80 to below the seat surface of the driver seat 27. A lower end portion of the windshield 13 is supported by the front lower wall portion 46. The upper end portion of the windshield 13 is supported by the front upper wall portion 47. The left end portion and the right end portion of the windshield 13 are respectively supported by a pair of left and right front vertical frames 24. A wiper 48 for wiping the upper outer surface of the windshield 13 is provided on the windshield 13.

  The windshield 13 is formed in a curved shape that bulges forward from the front end of the floor 49 in a side view. Specifically, when the windshield 13 is viewed from the side, the inclination angle θ1 with respect to the horizontal plane of the upper portion of the windshield 13 is larger than the inclination angle θ2 with respect to the horizontal plane of the lower portion of the windshield 13, and It is formed in a curved shape that bulges forward so as to be positioned rearward as it approaches the lower end. Moreover, the windshield 13 is formed in the curved shape located back, so that it approaches the left end part and the right end part in planar view. Thus, the windshield 13 is formed in the three-dimensional curved surface shape which curves in the up-down direction and the left-right direction.

[Front upper wall]
As shown in FIG. 8, the front upper wall portion 47 is connected to the front upper frame 66 so as to hang down from the lower surface of the front upper frame 66. The front upper wall portion 47 is configured separately from the front upper frame 66, but may be configured integrally with the front upper frame 66. The front upper wall portion 47 extends in the vertical direction between the lower end of the front upper frame 66 and the upper end of the windshield 13, and extends in the left-right direction between the left end and the right end of the upper end portion of the windshield 13. An upper end portion of the windshield 13 is overlapped and connected to the front surface of the front upper wall portion 47. An upper end portion of the windshield 13 is supported on a portion of the front upper wall portion 47 below the motor shaft 50a. The front upper wall 47 is made of, for example, an iron plate.

[Front lower wall]
As shown in FIG. 9, the front lower wall portion 46 is connected to the front end of the floor portion 49 so as to incline forward. The front lower wall portion 46 is configured separately from the floor portion 49, but may be configured integrally with the floor portion 49. The front lower wall portion 46 extends in the vertical direction between the lower end of the windshield 13 and the front end of the floor portion 49, and extends in the left-right direction between the left end and the right end of the lower end portion of the windshield 13. The lower end portion of the windshield 13 is overlapped and connected to the front surface of the front lower wall portion 46. The left end portion and the right end portion of the front lower wall portion 46 are bent backward. The front lower wall portion 46 is made of, for example, an iron plate.

[Rising part]
The rising portion 33 extends over the left end and the right end at the front end of the floor mat 32. The rising portion 33 is formed integrally with the rubber floor mat 32, for example, but may be formed separately. The front surface of the rising portion 33 is formed substantially vertically, and the rear surface of the rising portion 33 is formed so as to be inclined upward. The upper end of the rising portion 33 is set at a position higher than the upper end of the front lower wall portion 46. A gap D is formed between the rising portion 33 and the inner surface (rear surface) of the lower end portion of the windshield 13 and the rear surface of the front lower wall portion 46. The gap D is formed so as to increase as it approaches the upper end of the rising portion 33.

[Medium space]
As shown in FIGS. 5 to 7, the middle space S <b> 1 is formed between the steering lever 28 and the instrument panel 30. The middle space S1 exists in front of the driver seated on the driver's seat 27 so as to span the right end of the instrument panel 30 and the left end of the power steering unit portion 42 in the left-right direction, and the front upper wall portion 47 in the vertical direction. It exists so that it may extend over the lower end of this, and the upper end of the front lower wall part 46. FIG. Between the driver's seat 27 and the windshield 13, there is nothing in the middle space S <b> 1 that obstructs the field of view, and the front and front and lower fields of view of the driver seated on the driver's seat 27 are secured.

  Therefore, when the driver is in the posture P1, the front can be visually recognized through the middle space S1. Then, when the driver is in the posture P2, the work status of the cutting unit 1 (for example, the transport status of the scraping auger 4 or the cut mark of the cutting device 3) can be viewed through the middle space S1. When the driver looks into the front lower part in a forward bending posture, the driver can put his / her leg on the rising portion 33 so that his / her leg can be stretched.

[Right space]
The right space S2 is formed below the steering lever 28 (power steering unit 42). The right space S <b> 2 exists on the right side in the cabin 8 under the feet of the driver seated on the driver seat 27. There is nothing in the right space S2 between the driver seat 27 and the windshield 13 that obstructs the field of view, and the right side (front lower right) field of view in front of the driver seated on the driver seat 27 is provided. It is secured. The driver seated on the driver's seat 27 can easily adjust the right weeding tool 2 by visually recognizing the right weeding tool 2 through the right space S2.

[Left space]
The left space S3 is formed below the instrument panel 30. The left space S <b> 3 exists on the left side in the cabin 8 under the feet of the driver seated on the driver seat 27. There is nothing in the left space S3 between the driver seat 27 and the windshield 13 that obstructs the field of view, and the left side (front left and lower) field of view of the driver seated on the driver seat 27 in the lower front is shown. It is secured. The driver seated on the driver's seat 27 can easily perform the alignment with the left weeding tool 2 by visually recognizing the left weeding tool 2 through the left space S3.

  The ranges of the middle space S1, the right space S2, and the left space S3 in FIGS. 5 and 6 are examples for explanation, and the ranges of the middle space S1, the right space S2, and the left space S3 are limited to this. Is not to be done.

[Wiper]
As shown in FIG. 8, the wiper 48 is attached to the front end portion of the motor shaft 50 a of the motor 50. The motor shaft 50a penetrates the front upper wall portion 47 in the front-rear direction so as to protrude forward from the windshield 13.

  The motor 50 is attached to the front upper frame 66 via the first stay 51 and the second stay 52 so that the position of the motor 50 can be adjusted in the vertical direction. The first stay 51 is fixed to the front upper frame 66. A motor 50 is fixed to the second stay 52. The second stay 52 is attached to the first stay 51 so that the position thereof can be adjusted in the vertical direction through a long hole 52a that is long in the vertical direction.

  The wiper 48 includes a wiper arm 53 connected to the motor shaft 50 a and a blade 54 that can swing relative to the wiper arm 53. Here, in the windshield 13 having a large curvature, there is a possibility that the swinging end portion of the blade 54 and the wiper arm 53 may interfere with each other. In the present embodiment, the protrusion length of the motor shaft 50a is increased to increase the blade 54. By increasing the distance between the oscillating end portion and the wiper 48, the oscillating end portion of the blade 54 and the wiper arm 53 are less likely to interfere with each other. That is, the protruding length of the motor shaft 50a is set to a sufficient length so that the followability of the wiper 48 can be secured even with the windshield 13 having a large curvature.

  As shown in FIG. 10, the stay 41 is configured by bending a pipe-shaped member. The stay 41 is disposed outside the instrument panel 30 and the side panel 31. The stay 41 is covered with the instrument panel 30 so that it cannot be seen from either the driver seated on the driver seat 27 or the right side of the aircraft. A first fixing plate 55 is fixed to an end portion of the stay 41 that is fixed to the instrument panel 30. Two bolts 56 (stud bolts) are fixed to the first fixing plate 55. The stay 41 is fixed to the instrument panel 30 by tightening the nut 57 to the bolt 56 from the inside of the instrument panel 30.

  A second fixing plate 58 is fixed to an end portion of the stay 41 that is fixed to the side panel 31. Two bolt holes are formed in the second fixing plate 58. A reinforcing plate 59 is fixed inside the front portion of the side panel 31. A nut 60 (welding nut) is fixed to the reinforcing plate 59 at a position corresponding to the bolt hole of the second fixing plate 58. The stay 41 is fixed to the side panel 31 by screwing the bolt 61 into the nut 60 from the outside of the side panel 31.

[Airtight structure of control lever]
As shown in FIG. 11, the transmission lever 34 is supported so as to be swingable in the front-rear direction along a lever hole 31 a formed in the upper portion of the side panel 31. A cover 62 that closes the lever hole 31a from above is attached to the transmission lever 34. The cover 62 is configured to close the lever hole 31a over the entire swinging range of the speed change lever 34. The cover 62 is guided and supported by a guide member 63 attached to the upper surface of the side panel 31.

  With such a configuration, since the cover 62 covers the lever hole 31a from above over the entire swing range of the transmission lever 34, the airtightness of the transmission lever 34 can be improved. That is, it becomes difficult for dust to enter the side panel 31 through the lever hole 31a.

[Roof]
As shown in FIGS. 12 to 14, the roof portion 80 is supported by the upper frame 65. An air conditioner unit 70 that air-conditions the cabin 8 is installed in the rear portion of the roof portion 80. The roof portion 80 has an outer roof 81 and an inner roof 82.

  Between the outer roof 81 and the inner roof 82, there is provided a blower duct 90 for blowing air conditioned by the air conditioner unit 70 (cold air for cooling, warm air for heating) into the cabin 8. A rear portion of the left side portion of the outer roof 81 protrudes leftward. A suction port 88 for sucking outside air supplied to the air conditioner unit 70 is formed at the bottom of the outer roof 81 that protrudes to the left. A precleaner 110 for the engine 9 is supported at the rear end portion of the right side portion of the outer roof 81. A recessed portion 84 (corresponding to a “retraction portion” according to the present invention) into which the precleaner 110 enters is formed at the rear end portion on the right side portion of the outer roof 81. A housing portion 82 a for housing the motor 50 is formed at the front end portion of the inner roof 82. A recessed portion 83 that is recessed upward is formed in a portion of the inner roof 82 above the driver seated on the driver seat 27.

[Upper frame]
The upper frame 65 includes a front upper frame 66, a left front upper frame 67, and a right front upper frame 68. The front upper frame 66, the left front upper frame 67, and the right front upper frame 68 are configured separately, but may be configured integrally. The upper frame 65 is formed such that the left end of the front upper frame 66 and the front end of the left front upper frame 67 are connected, and the right end of the front upper frame 66 and the front end of the left front upper frame 67 are connected. The upper frame 65 does not have a frame continuous with the rear end of the left front upper frame 67 and the rear end of the right front upper frame 68. That is, the upper frame 65 is formed so that a space between the rear end portion of the left front upper frame 67 and the rear end portion of the right front upper frame 68 is opened.

  The front upper frame 66 extends in the left-right direction and supports the front portion of the roof portion 80. The front upper frame 66 is formed such that the left end portion and the right end portion thereof are curved rearward. The left front upper frame 67 extends in the front-rear direction and supports the left side portion of the roof portion 80. The left front upper frame 67 is formed such that a rear end thereof is bent to the right side, and is connected to a left side portion of the left stay 100. The right front upper frame 68 extends in the front-rear direction and supports the right side portion of the roof portion 80. The right front upper frame 68 is formed such that a rear end portion thereof is curved to the left side, and is connected to a right side portion of the right stay 102. The rear end portion of the right front upper frame 68 is curved larger (curved substantially at a right angle) than the rear end portion of the left front upper frame 67. The rear end portion of the right front upper frame 68 is placed and connected to the upper end portion of the rear vertical frame 25.

[Air conditioning unit]
The air conditioner unit 70 includes a heat exchanger 71 including an evaporator, a heater, and the like, and a fan 72 that blows air to the heat exchanger 71 in a state of being arranged in the left-right direction. The air conditioner unit 70 is disposed between the rear end portion of the left front upper frame 67 and the rear end portion of the right front upper frame 68 so as to be offset from the left front upper frame 67 and the right front upper frame 68 toward the left front upper frame 67 side. Yes. The air conditioner unit 70 is accommodated in the accommodating portion 85 in a state where it is placed and supported on the upper end portion of the rear wall portion 15. From the bottom of the air conditioner unit 70, two drain hoses 73 for discharging the waste water from the air conditioner unit 70 are distributed to the left side and the right side and extend downward (see FIG. 4).

[Container]
The accommodating portion 85 is formed at the rear end portion of the roof portion 80. The accommodating portion 85 protrudes rearward from the rear wall portion 15. A front end portion of the Glen tank 10 enters below the housing portion 85. The upper part of the accommodating part 85 is formed by the outer roof 81, and the lower part of the accommodating part 85 is formed by the lower cover 86.

  The lower cover 86 is attached to the outer roof 81 from below. More specifically, an upper bent portion 86 a that is bent upward is formed at the front end portion of the lower cover 86. The upper bent portion 86 a is connected to the upper end portion of the rear wall portion 15. Further, a rear bent portion 86 b that is bent backward is formed at the rear end portion of the lower cover 86. The rear bent portion 86 b is connected to the rear end portion of the outer roof 81. Specifically, a recessed portion 81a that is recessed upward is formed at the rear end portion of the outer roof 81, and the rear bent portion 86b enters the recessed portion 81a and contacts the lower surface of the outer roof 81 from below. In the attached state, they are connected by bolts inserted from below. Thus, the lower cover 86 is attached to the outer roof 81 from below. A bulging portion 86 c that bulges downward is formed at the lower rear end of the lower cover 86. A drain hose 73 is piped to the bulging portion 86c.

[Mounting surface]
A front bent portion 15a bent forward and an upper bent portion 15b bent upward connected to the front bent portion 15a are formed at the upper end portion of the rear wall portion 15. An upper surface of the front bent portion 15a is a mounting surface 15c on which the air conditioner unit 70 is mounted. A rear end portion of the inner roof 82 is connected to the front bent portion 15a. Specifically, the rear end portion of the inner roof 82 is connected to the lower surface of the front bent portion 15a from below with a bolt inserted from above. A distribution duct 91 is placed and supported on the upper end of the upper bent portion 15b.

  A left stay 100, a middle stay 101, and a right stay 102 are connected to the mounting surface 15c in a cantilever shape protruding rearward from the rear wall portion 15. The left stay 100 supports the left side of the air conditioner unit 70. On the left side of the fan 72, a pair of front and rear left mounting legs 72a connected to the left stay 100 is provided. The middle stay 101 supports the left and right intermediate portions of the air conditioner unit 70. A pair of front and rear middle mounting legs 71 a connected to the middle stay 101 are provided on the left side of the heat exchanger 71. The right stay 102 supports the right side portion of the air conditioner unit 70. On the right side of the heat exchanger 71, a pair of front and rear right mounting legs 71b connected to the right stay 102 is provided.

(Recessed part)
The recessed portion 83 is formed in a portion of the inner roof 82 in front of the air conditioner unit 70. In the recessed portion 83, a front wall portion 83A, a rear wall portion 83B, a left wall portion 83C, and a right wall portion 83D are formed. The recessed portion 83 is formed in a substantially left-right symmetric shape with respect to the left-right center C of the roof portion 80 in plan view. The recessed portion 83 extends from the left end of the driver seat 27 to the right from the right end of the driver seat 27.

  As shown in FIG. 3, the recessed portion 83 is formed so as to extend from the front portion of the indoor ceiling portion 82 </ b> A constituted by the inner roof 82 to the rear portion of the ceiling portion 82 </ b> A. The recessed portion 83 is formed so as to extend from the upper front portion to the upper rear portion of the floor portion 49. The recessed portion 83 extends from the rear of the back end position L2 of the backrest 27a of the driver seat 27 to the front of the front end of the seat surface 27b of the driver seat 27 and to the front of the front end position L1 of the steering lever 28. That is, the recessed portion 83 is formed so as to extend from above the front end position L1 of the steering lever 28 to above the rear end position L2 of the backrest 27a of the driver seat 27. The position of the front end of the recessed portion 83 is set in the vicinity of the connection boundary L3 between the side panel 31 and the instrument panel 30 (specifically, the position between the connection boundary L3 and the front end of the instrument panel 30). (See FIG. 6).

  As shown in FIGS. 12 to 14, the front wall portion 83 </ b> A is formed at the front portion of the recessed portion 83. The front wall portion 83A is formed to be substantially vertical (strictly, so as to be slightly inclined forward and downward). The front wall portion 83A is formed to bend to the rear side at the left and right central portions. That is, the left side portion and the right side portion of the front wall portion 83 </ b> A are directed toward the left and right center C of the roof portion 80. In addition, an electronic device arrangement space 87 is formed between the front wall portion 83 </ b> A and the outer roof 81.

  The rear wall portion 83 </ b> B is formed at the rear portion of the recessed portion 83. The rear wall 83B is formed so as to incline forward. In the rear wall 83B, an inside air introduction port 82b for introducing the inside air of the cabin 8 into the air conditioner unit 70 is formed. Between the rear wall portion 83 </ b> B and the air conditioner unit 70, a shutter 103 for switching whether to introduce the inside air of the cabin 8 or the outside air of the cabin 8 to the air conditioner unit 70 is provided.

  The left wall portion 83 </ b> C is formed on the left side portion of the recessed portion 83. The left wall portion 83C is formed to incline to the left. The right wall portion 83D is formed on the right side of the recessed portion 83. The right wall portion 83D is formed so as to incline downward to the right.

[Electronic equipment installation space]
The electronic device placement space 87 is a space for placing electronic devices. The electronic device includes an electronic device main body and an electronic device operation unit for operating the electronic device. In the present embodiment, a radio 104, a radio operation unit 105 for operating the radio 104, and an air conditioner operation unit 106 for operating the air conditioner unit 70 are disposed in the electronic device disposition space 87. The radio 104 and the radio operation unit 105 are arranged in the left part of the electronic device arrangement space 87. The air conditioner operation unit 106 is arranged on the right side portion of the electronic device arrangement space 87. The radio operation unit 105 and the air conditioner operation unit 106 are exposed in the cabin 8. Further, as described above, since the left side portion and the right side portion of the front wall portion 83A face the left and right center C side of the roof portion 80, the driver can operate the radio operation unit 105 and the air conditioner operation unit from the driver seat 27. It is easy to operate 106.

  The air conditioner operation unit 106 includes an operation unit for adjusting the temperature, an operation unit for adjusting the air volume, an operation unit for switching between outside air introduction and inside air circulation (switching operation of the shutter 103), and the like. Yes. The air conditioner operation unit 106 can be provided on the side panel 31 or can be configured by a remote controller.

[Blower duct]
The air duct 90 is provided between the outer roof 81 and the inner roof 82 and extends to the front portion of the cabin 8. The air duct 90 has a distribution duct 91, a left air duct 92, and a right air duct 93.

  The distribution duct 91 distributes the air conditioned by the air conditioner unit 70 to the left air duct 92 side and the right air duct 93 side. The rear part of the distribution duct 91 is connected to the air conditioner unit 70 in communication.

  The left ventilation duct 92 blows the air conditioned by the air conditioner unit 70 to the left side in the cabin 8. The left air duct 92 is disposed on the left side with respect to the recessed portion 83. The rear end portion of the left air duct 92 is connected in communication with the left side portion of the distribution duct 91. The front end portion of the left air duct 92 is formed so as to be bent toward the left and right center C of the cabin 8 in plan view, and is disposed in the electronic device disposition space 87. The radio 104 is arranged above the front end of the left air duct 92 so that the front end (the bent portion) of the left air duct 92 and the radio 104 overlap in plan view. The left blower duct 92 is provided with four left outlets 92a through which air conditioned by the air conditioner unit 70 blows into the cabin 8. A grill 92b is attached to each left outlet 92a.

  The three front left outlets 92 a are formed in the front portion of the roof portion 80. The three front left outlets 92a are disposed in front of the front end of the seat surface 27b of the driver seat 27. The rearmost left outlet 92 a is formed in the rear portion of the roof portion 80. The leftmost air outlet 92a at the end is arranged in the vicinity of the backrest of the driver seat 27 in the front-rear direction. Thereby, the air conditioned by the air conditioner unit 70 can easily reach the back of the driver seated on the driver seat 27. Further, the two front left outlets 92a are disposed close to the left and right center C of the roof portion 80 while being close to each other. The two front left air outlets 92 a are formed in a portion of the inner roof 82 below the electronic device installation space 87. The two rear left outlets 92a are formed in a portion (left wall 83C) of the recessed portion 83 that faces the left air duct 92.

  A left restricting portion 92c having a diameter that decreases toward the downstream side in the air flow direction between the second left air outlet 92a from the front of the left air duct 92 and the third left air outlet 92a from the front. Is formed. The left throttle 92c is configured by a wall surface that is substantially perpendicular to the air flow direction (see FIG. 15). The left air duct 92 has a lower front portion than a rear portion with the left throttle portion 92c interposed therebetween.

  With such a configuration, the wind speed of the air flowing through the left ventilation duct 92 is increased at the left throttle portion 92c, so that the draft feeling is improved. In particular, since the left throttle portion 92c is configured with a wall surface that is substantially perpendicular to the air flow direction, the wind speed is rapidly increased as compared with the throttle portion being configured with a gentle surface. The draft feeling is further improved.

  The right ventilation duct 93 blows the air conditioned by the air conditioner unit 70 to the right side in the cabin 8. The right air duct 93 is disposed on the right side with respect to the recessed portion 83. The rear end portion of the right air duct 93 is connected in communication with the right side portion of the distribution duct 91. The front end portion of the right air duct 93 is formed to be bent toward the left and right center C side of the cabin 8 in plan view, and is disposed in the electronic device disposition space 87. The right air duct 93 is provided with four right air outlets 93 a through which air conditioned by the air conditioner unit 70 blows into the cabin 8. A grill 93b is attached to each right outlet 93a.

  The three front right outlets 93 a are formed in the front portion of the roof portion 80. The three front right outlets 93a are arranged in front of the front end of the seat surface 27b of the driver seat 27. The rearmost right outlet 93 a is formed in the rear portion of the roof portion 80. The rearmost right outlet 93a is disposed in the vicinity of the backrest of the driver seat 27 in the front-rear direction. Thereby, the air conditioned by the air conditioner unit 70 can easily reach the back of the driver seated on the driver seat 27. Further, the two front right outlets 93a are arranged near the left and right center C of the roof portion 80 in a state of being close to each other. The two front right outlets 93 a are formed in a portion of the inner roof 82 below the electronic device installation space 87. The two rear right outlets 93a are formed in a portion (right wall 83D) of the recessed portion 83 facing the right air duct 93.

  A right restricting portion 93c whose diameter decreases toward the downstream side in the air flow direction between the second right outlet 93a from the front of the right air duct 93 and the third right outlet 93a from the front. Is formed. The right throttle portion 93c is configured by a wall surface that is substantially perpendicular to the air flow direction (see FIG. 15). The right air duct 93 has a lower height on the front side than on the rear side with the right throttle portion 93c interposed therebetween.

  With such a configuration, the wind speed of the air flowing through the right air blowing duct 93 is increased at the right throttle portion 93c, so that the draft feeling is improved. In particular, since the right throttle portion 93c is configured with a wall surface substantially perpendicular to the air flow direction, the throttle portion is configured with a gentle inclined surface whose diameter gradually decreases toward the downstream side in the air flow direction. Compared to the case, the draft speed is drastically increased, so that the draft feeling is further improved.

[Suction port]
The suction port 88 is formed on the left side of the outer roof 81 on the side where the air conditioner unit 70 is offset in the left-right direction. The suction port 88 is adjacent to the fan 72 in the air conditioner unit 70. That is, the suction port 88 is formed in the left side of the outer roof 81 on the fan 72 side with respect to the air conditioner unit 70 in the left-right direction. A suction port 88 is disposed on the left side with respect to the air conditioner unit 70, and a pre-cleaner 110 is disposed on the right side with respect to the air conditioner unit 70. In other words, the suction port 88 is disposed on the inner side of the roof 80 and the precleaner 110 is disposed on the outer side of the roof 80. That is, the suction port 88 is formed on the left side of the outer roof 81 that is opposite to the left and right of the pre-cleaner 110 with respect to the air conditioner unit 70. The suction port 88 is formed in a substantially rectangular shape that opens downward, and is disposed obliquely so that the longitudinal direction of the suction port 88 is located on the left side as it approaches the front end with respect to the front-rear direction.

  As shown in FIG. 16, a cover 107 is attached to the suction port 88 in a state of being spaced downward with respect to the suction port 88. The cover 107 is fixed to the suction port 88 by bolts 108 from below. A first step 107 a is formed on the right half of the cover 107. A second step 107 b is formed on the left half of the cover 107. The separation interval of the second step portion 107 b with respect to the suction port 88 is larger than the separation interval of the first step portion 107 a with respect to the suction port 88. Outside air is sucked in between the second step 107 b and the suction port 88 on the left side of the cover 107 and between the first step 107 a and the suction port 88 on the right side of the cover 107.

〔shutter〕
As shown in FIGS. 14 and 17, the shutter 103 can swing around a laterally oriented axis and can be switched between a position for introducing outside air and a position for circulating inside air. When the inside air introduction port 82b is closed by the shutter 103, outside air is introduced into the air conditioner unit 70 through the outside air introduction port 81b. When the outside air introduction port 81b is closed by the shutter 103, the inside air is introduced into the air conditioner unit 70 through the inside air introduction port 82b. A long hole 103 a (slit) that is long in the short direction of the shutter 103 is formed at the left end of the shutter 103.

  As shown in FIG. 17A, when the shutter 103 is switched to a position for closing the inside air introduction port 82b, the long hole 103a is not located within the range of the inside air introduction port 82b. In this case, outside air is introduced into the air conditioner unit 70 through the outside air introduction port 81b, but inside air is not introduced into the air conditioner unit 70 through the long hole 103a.

  On the other hand, as shown in FIG. 17B, when the shutter 103 is switched to the position for closing the outside air introduction port 81b, the long hole 103a is located within the range of the outside air introduction port 81b. In this case, the inside air is introduced into the air conditioner unit 70 through the inside air introduction port 82b, and some outside air is introduced into the air conditioner unit 70 through the long hole 103a. As a result, the internal pressure in the cabin 8 increases during circulation of the inside air, so that dust can be prevented from entering from the outside of the cabin 8. It should be noted that the size of the long hole 103a is set so that the merit of the inside air circulation is not lowered (the outside air is not introduced too much during the inside air circulation).

[Pre-cleaner]
As shown in FIGS. 12, 18, and 19, the precleaner 110 is disposed so as to enter the recessed portion 84. A precleaner support portion 89 (corresponding to “a portion corresponding to the retraction portion of the roof portion”) according to the present invention is formed in a portion corresponding to the recessed portion 84 of the outer roof 81. . The precleaner 110 projects rightward from the right side portion of the outer roof 81. When viewed from the side, the upper end 110a (for example, a screw) of the precleaner 110 is positioned below the upper end (height position h) of the roof portion 80, and substantially all of the precleaner 110 is exposed. . In plan view, substantially all of the precleaner 110 is exposed (see FIG. 2). In the rear view, the precleaner 110 is completely exposed. The precleaner 110 is arranged on the right side with respect to the air conditioner unit 70. That is, the air conditioner unit 70 is arranged to be offset to the left side with respect to the roof portion 80, and the precleaner 110 is opposite to the side on which the air conditioner unit 70 is offset with respect to the roof portion 80. It is arranged on the right side which is the side.

(Recessed part)
The recessed portion 84 is formed so that the upper surface of the outer roof 81 is recessed downward. The recessed portion 84 opens on the right side and the rear side in plan view. The precleaner 110 protrudes rightward from the opening of the recessed portion 84. The recessed portion 84 is provided with a communication pipe 112 (corresponding to a “communication portion” according to the present invention) that allows the precleaner 110 side and the air cleaner 111 side for the engine 9 to communicate with each other. The recessed portion 84 is formed with a vertical wall portion 84a extending in the vertical direction. The vertical wall portion 84 a is formed so as to extend to the left side and the front side of the recessed portion 84 in plan view, and has a substantially arc-shaped portion that follows the shape of the precleaner 110. The vertical wall portion 84 a extends from the lower end to the upper end of the recessed portion 84.

[Precleaner support]
The precleaner support 89 is formed integrally with the outer roof 81. The lower end 89a of the precleaner support portion 89 (corresponding to “the lower end of the portion corresponding to the retraction portion of the roof portion” according to the present invention) is located at the lowest position in the outer roof 81. The lower end 89a of the pre-cleaner support part 89 is formed in a substantially horizontal linear shape in a side view and a back view. An alarm horn 113 is attached to the lower end 89 a of the precleaner support 89.

[Communication pipe]
The communication pipe 112 is configured separately from the outer roof 81, but may be configured integrally with the outer roof 81. The communication pipe 112 is constituted by, for example, a resin pipe. The communication pipe 112 is fixed to the precleaner support portion 89 so as to penetrate the precleaner support portion 89 in the vertical direction. The precleaner support 89 is formed with a through-hole 89b through which the communication pipe 112 passes. The through hole 89b is not included in the recessed portion 84. A precleaner 110 is connected to the upper end of the communication pipe 112. The upper end of the connection pipe 114 is connected to the lower end of the communication pipe 112. A lower end portion of the connection pipe 114 is connected to the air cleaner 111.

[Outside step]
As shown in FIG. 2, a ladder 115 for raising and lowering is provided in a portion of the front portion of the threshing device 7 that is closer to the left outer side of the machine body. The ladder 115 is fixed to the body frame 6. Further, an outer step 116 for raising and lowering (corresponding to “step” according to the present invention) is provided in a portion of the front portion of the threshing device 7 that is closer to the left outer side of the machine body. That is, the outer step 116 is arranged on the left outer side of the machine body with respect to the unloader receiver 12. Moreover, the outer side step 116 is comprised with the channel member, and is fixed in the state opened below in front view. The outer step 116 is fixed to the upper part of the front wall portion of the threshing device 7 (threshing top plate). Further, an inner step 117 for raising and lowering is provided at a portion of the front portion of the threshing device 7 closer to the right inner side of the machine body. The inner step 117 is composed of a channel member and is fixed in a state of opening downward in a front view. The inner step 117 is fixed to the unloader receiver 12.

  With such a configuration, the outer step 116 can be used to easily ascend onto the threshing device 7 from the left outer side of the unloader receiver 12. That is, when the inside step 117 is used to rise on the threshing device 7 from the right inner side of the unloader receiver 12, the space between the cabin 8 and the unloader 11 is difficult to pass through, but the left outer side of the unloader receiver 12. If so, the space is easy to pass because it is open to the left outer side of the aircraft.

[Compressor mounting structure]
As shown in FIG. 20, the compressor 118 for the air conditioner unit 70 is disposed in front of the inclined portion at the lower part of the Glen tank 10. That is, the compressor 118 is disposed above the Glen tank driving belt 119 that transmits the power of the engine 9 to the Glen tank 10 (conveyance system). Further, the power of the engine 9 is transmitted to the compressor 118 by the compressor driving belt 120. A compressor driving belt 120, a glen tank driving belt 119, and a fan driving belt 121 are linked to the output shaft 9a of the engine 9 in order from the outer right side of the machine body. The fan drive belt 121 transmits the power of the engine 9 to the cooling fan 122 for the engine 9.

  The compressor 118 is fixed to the rear surface of the compressor stay 123 with bolts 131. The compressor stay 123 is erected on the upper surface of the intermediate stay 124. The intermediate stay 124 is fixed to the upper part of the base stay 125. The upper portion of the base stay 125 is supported by the engine 9 (for example, a cylinder block) via a support rod 126. A lower portion of the base stay 125 is fixed to an engine base column 127 (a column 127 for the anti-vibration mount 132).

[Another embodiment]
(1) In the above embodiment, the airtight structure according to the present invention is applied to the shift lever 34. However, the airtight structure may be applied to the clutch lever 35, or only the shift lever 34 and the clutch lever 35 that can be switched to a predetermined switching position. Alternatively, it may be applied to a stepless operation lever.

  Further, the airtight structure according to the above embodiment may be as follows. For example, as shown in FIGS. 21 and 22, an upper and lower double packing 128 and a lower packing 129 that close the lever hole 31 a from above may be attached to the upper surface of the side panel 31. In the following description, the operation lever 130 is used as the transmission lever 34, the clutch lever 35, the stepless operation lever, and other operation levers.

  A lower slit 129 a is formed in the lower packing 129 along the movement locus of the operation lever 130. The upper packing 128 is formed with an upper slit 128 a along the movement locus of the operation lever 130. Round holes 128b are formed at both ends of the upper slit 128a. The round hole 128 b is formed at a position corresponding to the switching positions A and B of the operation lever 130.

  With such a configuration, when the operating lever 130 is switched to the switching position A, the operating lever 130 is fitted into the circular hole 128b on the switching position A side, and at the end of the lower slit 129a on the switching position A side. Will do. When the operating lever 130 is switched to the switching position B, the operating lever 130 is fitted into the round hole on the switching position B side and is positioned at the end of the lower slit 129a on the switching position B side.

  Here, when the operation lever 130 is positioned at the end of the lower slit 129a, the end of the lower slit 129a is deformed according to the shape of the operation lever 130. As a result, the operation lever 130 and the end of the lower slit 129a There will be a gap between the two. However, since the operating lever 130 is fitted in the round hole 128b of the upper packing 128, the gap at the end of the lower slit 129a is blocked by the upper packing 128, so that the air tightness of the operating lever 130 is maintained. .

  Three or more round holes 128b may be formed. Further, as shown in FIG. 23, even if a round hole 128b is formed at one end of the upper slit 128a and a round hole 129b is formed at the other end of the lower slit 129a. Good.

(2) In the above embodiment, the recessed portion 84 is formed at the rear end portion of the right side portion of the outer roof 81 so that the upper surface of the outer roof 81 is recessed downward. The “part” is not limited to this. For example, as shown in FIG. 24A, the retraction portion 184 may be formed by cutting out the rear end portion of the right side portion of the outer roof 81. In addition, as shown in FIG. 24B, the retraction portion 284 may be formed by the rear surface of the outer roof 81 being recessed forward. Moreover, as shown in FIG.24 (c), the retraction | retraction part 384 may be formed when the upper surface in an inner roof part of the outer roof 81 indents below.

(3) In the above embodiment, the pre-cleaner support portion 89 is formed integrally with the outer roof 81, but may be formed separately. In this case, a dedicated bracket for supporting the precleaner 110 may be used.

(4) In the above embodiment, the suction port 88 is formed on the left side of the outer roof 81 on the side where the air conditioner unit 70 is offset in the left-right direction. May be formed on the right side of the opposite side.

(5) In the above embodiment, the suction port 88 is formed on the left side of the outer roof 81 on the fan 72 side with respect to the air conditioner unit 70 in the left-right direction. You may form in the right side part on the opposite side to the side.

(6) In the above embodiment, the left side of the outer roof 81 protrudes to the left, and the suction port 88 is formed at the bottom of the portion of the outer roof 81 that protrudes to the left. The right side portion may protrude rightward, and a suction port 88 may be formed at the bottom portion of the outer roof 81 that protrudes rightward. Alternatively, the outer roof 81 may protrude leftward or rightward. It may be formed on the front part, the rear part, the upper part and the side part of the part.

(7) In the above embodiment, the suction port 88 is formed on the left side of the outer roof 81 on the opposite side to the precleaner 110 with respect to the air conditioner unit 70. 110 may be formed on the right side on the same left and right side.

(8) In the embodiment described above, the suction port 88 is disposed on the inner side of the roof part 80 on the machine body side, but may be disposed on the outer side of the roof part 80 on the machine body side.

(9) In the above embodiment, the pre-cleaner 110 is disposed on the right side opposite to the side where the air conditioner unit 70 is offset with respect to the roof portion 80, but with respect to the roof portion 80. The air conditioner unit 70 may be disposed on the left side, which is the offset side.

(10) In the above embodiment, the pre-cleaner 110 is disposed on the right side with respect to the air conditioner unit 70, but may be disposed on the left side with respect to the air conditioner unit 70.

(11) In the above embodiment, the precleaner 110 is disposed on the laterally outer side of the roof part 80, but may be disposed on the laterally inner side of the roof part 80.

(12) In the above embodiment, the upper end 110 a of the precleaner 110 is positioned below the upper end of the roof portion 80 in a side view, but the upper end 110 a of the precleaner 110 is more than the upper end of the roof portion 80. May also be located above.

(13) In the above embodiment, the lower end 89 a of the precleaner support 89 is located at the lowest position in the outer roof 81, but it may not be located at the lowest position in the outer roof 81.

(14) In the above embodiment, the communication pipe 112 passes through the precleaner support portion 89 in the vertical direction, but may be provided so as to bypass the precleaner support portion 89.

(15) In the above-described embodiment, the recessed portion 84 is formed so that substantially all of the precleaner 110 is exposed in a side view, but may be formed so that substantially all of the precleaner 110 is not exposed. Good. That is, the recessed portion 84 may be formed so as to cover the precleaner 110 in a side view.

(16) In the above-described embodiment, the recessed portion 84 is formed so that substantially all of the precleaner 110 is exposed in the rear view, but may not be formed so that substantially all of the precleaner 110 is exposed. Good. That is, the recessed portion 84 may be formed so as to cover the precleaner 110 in a rear view.

  The present invention can be used for a self-removing combine and other harvesting machines in addition to the ordinary combine.

7 Threshing device 8 Cabin 9 Engine 10 Glen tank (grain storage part)
70 Air Conditioning Unit 71 Heat Exchanger 72 Fan 110 Precleaner 110a Upper End of Precleaner 80 Roof Part 84 Recessed Part (Retraction Part)
84a Vertical wall portion 88 Suction port 89 Pre-cleaner support portion (the portion corresponding to the retraction portion of the roof portion)
89a Lower end of the precleaner support part (lower end of the part corresponding to the retraction part of the roof part)
107 Cover 111 Air cleaner 112 Communication pipe (communication part)
116 Outer step (step)
184 retirement part 284 retirement part 384 retirement part

Claims (19)

A cabin on which the driver is boarded;
An air conditioner unit for air conditioning the cabin;
A precleaner for the engine,
The air conditioner unit is installed in a rear portion of the roof portion of the cabin,
A harvesting machine in which the pre-cleaner is disposed on one of the left and right sides of the air conditioning unit. The air conditioner unit is arranged offset to the left and right other side in the roof portion,
The harvester according to claim 1, wherein the pre-cleaner is disposed on a side opposite to a side where the air conditioner unit is offset with respect to the roof portion.   The harvester according to claim 1 or 2, wherein the precleaner is supported by the roof portion. In the roof portion, a retraction portion that is retreated inward with respect to other portions of the outer surface of the roof portion is formed,
The harvester as described in any one of Claim 1 to 3 arrange | positioned so that the said pre-cleaner may enter into the said retraction | saving part.   The harvesting machine according to claim 4, wherein the upper end of the precleaner is positioned below the upper end of the roof portion in a side view in a state in which the precleaner is disposed so as to enter the retraction portion.   The harvester according to claim 4 or 5, wherein the retraction part is formed so that an upper surface of the roof part is recessed downward.   The harvesting machine according to claim 4 or 5, wherein the retraction part is formed by notching an end part of the roof part.   The harvesting machine according to claim 6 or 7, wherein a lower end of a portion of the roof portion corresponding to the retraction portion is positioned at a lowermost position in the roof portion.   The harvesting machine according to any one of claims 4 to 8, wherein a communication portion that communicates the air cleaner side for the engine and the precleaner side is provided in the retraction portion.   The harvester according to any one of claims 4 to 9, wherein the retraction portion is formed so that substantially all of the precleaner is exposed in a side view.   The harvester according to any one of claims 4 to 10, wherein the retraction unit is formed so that substantially all of the precleaner is exposed in a rear view.   The harvester according to any one of claims 4 to 11, wherein a vertical wall portion extending in a vertical direction is formed in the retraction portion.   13. The suction port according to claim 1, wherein a suction port for sucking outside air supplied to the air conditioner unit is formed on a side opposite to the precleaner with respect to the air conditioner unit in the roof portion. Harvester. The air conditioner unit has a heat exchanger and a fan for blowing air to the heat exchanger in a state of being arranged in the left-right direction,
The harvest according to any one of claims 1 to 12, wherein a suction port for sucking outside air supplied to the air conditioner unit is formed on the fan side with respect to the air conditioner unit in the left-right direction in the roof portion. Machine. Of the roof part, the side part opposite to the left and right of the pre-cleaner with respect to the air conditioner unit protrudes to the left and right opposite side,
The harvesting machine according to claim 13 or 14, wherein the suction port is formed in a protruding portion of the roof portion.   The harvesting machine according to claim 15, wherein the suction port is formed in a bottom portion of a protruding portion of the roof portion. A cover is attached in a state of being spaced downward with respect to the suction port,
The harvester as described in any one of Claims 13-16 comprised so that the said external air may be sucked in from the side between the said cover and the said suction inlet. The pre-cleaner is disposed on the laterally outer side of the roof portion,
The harvesting machine according to any one of claims 13 to 17, wherein the suction port is disposed on a laterally inner side of the roof part. Behind the cabin, a grain storage unit for storing the grain is provided,
A threshing device for threshing the harvested cereal rice bran in a state aligned in the left-right direction with the grain storage unit,
The harvesting machine according to any one of claims 1 to 18, wherein a step for raising and lowering is provided in a portion of the front part of the threshing device near the outside of the machine body.

Images