JP5722611B2 - Combine - Google Patents

Description

  The present invention relates to a combine provided with a cutting part provided on the front side of a traveling machine body and provided with a cabin that covers an upper part of a driving part located at one side of the front side of the traveling machine body.

Conventionally, the above combine has been configured as follows.
That is, the cabin is formed in a substantially square box shape with an operating part inside, and the cabin floor (which also serves as the floor of the operating part) is rotated forward and backward around the axis centering laterally with respect to the body frame. In some cases, the cabin is configured to freely change its position between a use position where the cabin is erected substantially vertically and a maintenance position that is inclined forward while the operation section is provided in the interior (for example, , See Patent Document 1).

JP 2005-124430 A

  In the above-described conventional configuration, the floor portion of the cabin is configured to support the aircraft frame so as to be pivotable back and forth around the lateral axis. It is necessary to make the floor part with high rigidity, and the peripheral wall part of the cabin connected to the floor part must also be high rigidity, which makes the structure of the cabin complicated and heavy. There was a disadvantage such as, and there was room for improvement in this respect.

  An object of the present invention is to provide a combine that enables a cabin to be changed to a posture in which maintenance work can be easily performed while sufficiently securing rigidity without causing a complicated structure or an increase in weight of the cabin. .

The combine according to the present invention is provided with a cutting part on the front side of the traveling machine body, and with a cabin covering the upper side of the driving part located on one side of the front part of the traveling machine body. One characteristic configuration is that the cabin includes a column that forms a frame portion of the windshield portion and a door frame portion that opens and closes the doorway, and the lower end portion of the column is arranged around a horizontal axis. By swinging freely supported on the fuselage frame, the posture can be freely changed over the normal use posture and the tilted posture inclined to the outside of the fuselage from the normal use posture ,
The cabin can be changed to a forward tilted posture that opens vertically above the mowing unit and overlaps with the mowing unit in a vertical direction so as to cover the upper part of the mowing unit as the tilting posture. Is supported by the machine frame so that it can swing freely.
When the cabin is switched from the normal use posture to the forward leaning posture, an upper portion of the cutting portion is configured to enter an opening formed in a lower portion of the front portion of the cabin .

  According to the first feature configuration, when performing the cutting operation, the operator can comfortably perform the operation in a space surrounded by the cabin and from which there is no possibility of dust such as straw scraps from the outside, When performing maintenance work inside the airframe located below the driving part or the driving part, the maintenance work can be performed in a state where the cabin does not get in the way by switching the cabin to the tilted position.

  And in supporting the cabin so that the posture can be freely changed, the lower end portion of the column that forms the frame portion of the windshield portion of the cabin and the door frame portion that opens and closes the doorway is swingable around the horizontal axis. The structure of the cabin is complicated because it is configured to be freely changeable between the normal use posture that is supported by the frame and the cabin covers the upper part of the driving part and the tilting posture that tilts outward from the normal use posture. It is possible to change the cabin to a posture that facilitates maintenance work while ensuring sufficient rigidity without incurring a large weight.

  In addition, a pillar for forming a frame for a windshield provided to make it easier for the driver inside the cabin to see the front of the fuselage and for forming a door frame for the driver to enter and exit These struts have a sufficiently large rigidity, and constitute a strength member for supporting the strength of the entire cabin.

  Therefore, it is possible to change the posture of the cabin between the normal use posture and the collapsed posture by effectively using such a prop and by supporting the lower end of the prop on the body frame so as to be swingable around the horizontal axis. To support.

  As a result, because the struts that make up the strength members for supporting the windshield and doors and that have high rigidity and support the overall strength of the cabin are effectively used, they are supported rotatably on the fuselage frame. There is no disadvantage that the structure is complicated by improving the strength of other members other than the columns, and there is no possibility of increasing the weight.

  Therefore, according to the first feature configuration, a combine is provided that allows the cabin to be changed to a posture that facilitates maintenance work while ensuring sufficient rigidity without complicating the cabin structure or increasing the weight. I was able to do it.

According to the first feature configuration, when the cabin is switched to the tilted posture, the upper part of the operating part is opened, so that maintenance work such as repair and inspection of various operating devices for operation in the operating part or driving Maintenance work and the like can be easily performed in the airframe below the unit, for example, in a driving unit equipped with an engine, engine cooling equipment, and the like.

  Also, when the cabin is switched to the tilted position, the cabin overlaps with the mowing unit in the vertical direction so that the cabin is over the mowing unit, so the ceiling of the cabin is not above the driving unit but above the mowing unit. Therefore, the upper part of the operating part is largely opened, so that the maintenance work can be easily performed.

Further, according to the first characteristic configuration, when the cabin is swung around the lower horizontal axis to switch from the normal use posture to the forward leaning posture, the upper portion of the cutting portion is formed in the opening formed in the lower front portion of the cabin. Therefore, even if a cutting part is provided on the front side of the traveling machine body, the cabin can be inclined forward without interfering with the upper part of the cutting part.

  Since the cabin can be tilted forward without interfering with the upper portion of the cutting part in this way, for example, when the cabin is tilted outward in the lateral direction of the aircraft, the lateral width of the aircraft is widened. The cabin can be tilted without increasing the width of the fuselage.

In the second characteristic configuration of the present invention, in addition to the first characteristic configuration, the front portion of the cabin is divided into an upper side portion and a lower side portion, and in the normal use posture, the upper side portion becomes the lower side portion. It is located in a continuous state, and in the collapsed posture, the upper side portion is separated from the lower side portion and the opening is formed at a location corresponding to the lower side portion. .

According to the second feature configuration, the upper side portion of the cabin is located in a state of being connected to the lower side portion in the normal use posture, and is separated from the lower side portion in the collapsed posture, and has an opening at a position corresponding to the lower side portion. Is formed, and the upper part of the cutting part enters the opening, and the cabin and the cutting part overlap each other in the vertical direction.

  In this way, when changing the posture of the cabin to the collapsed posture, only the upper side portion of the front portion of the cabin is changed in position, so even if a cutting portion is provided on the front side of the traveling aircraft body, a large opening is provided. The cabin can be largely inclined forward in a state where the portion is formed and does not interfere with the cutting portion.

  By the way, this type of combine is transported in a state where it is stored in a container when shipping and transporting. However, when a cabin is equipped, the height of the combine is increased by the presence of the cabin. The height from the grounding part to the upper end position may exceed the container's storage height. In such a case, the height from the grounding part of the combine to the upper end position will exceed the container's storage height, and the combine cannot be transported in the container. Must be transported separately from the combine.

On the other hand, according to the second characteristic configuration, the cabin overlaps with the mowing unit in the vertical direction so that the cabin covers the upper part of the mowing unit, and the cabin can be largely inclined forward. The height from the grounding portion to the upper end position can be reduced.
As a result, the combine can be stored in the container without separating the cabin, and can be shipped and transported in the state of being stored in the container.

The third feature configuration of the present invention is that, in addition to the first feature configuration or the second feature configuration, the forward leaning posture is a leaning posture inclined by about 90 degrees from the normal use posture.

According to the third feature configuration, when the cabin is switched to the tilted posture, the cabin is in a tilted posture inclined by about 90 degrees from the normal use posture, so that the upper part of the driving unit is largely opened as in the case where the cabin is not provided. It becomes a state.

Therefore, when the cabin is switched to the tilted position, maintenance work can be performed inside the fuselage under the driving unit and the driving unit in the state of being largely opened as in the case where the cabin is not provided. It will be possible to do well without being disturbed.
The fourth characteristic configuration of the present invention is a combine provided with a cutting part on the front side of the traveling machine body and a cabin that covers the upper part of the driving part located at one side of the front part of the traveling machine body,
The cabin is configured to include a column that forms a frame portion of the windshield portion and a door frame portion that opens and closes an entrance, and the lower end portion of the column is swingable around a horizontal axis. By supporting it on the frame, it can be freely changed in posture over the normal use posture and the tilted posture that tilts outward from the normal use posture,
In the state where the cabin is in the normal use posture, the lower end of the support column is placed and supported on the body frame, and the horizontal axis is located in front of the lower end of the support column.
According to a fifth feature configuration of the present invention, in addition to any one of the first feature configuration to the fourth feature configuration, the position of the cabin is restricted by an intermediate inclined posture that is located between the normal use posture and the collapsed posture. The position control mechanism is provided.

It is a right view of a combine. It is a left view of a combine. It is a top view of a combine. It is a partially cutaway side view of the cabin arrangement part of a combine. It is a top view of an operation part. It is a vertical front view of a drive part. It is a right view which shows the support structure of a cabin. It is a left view which shows the support structure of a cabin. It is a front view which shows the support structure of a cabin. It is a cross-sectional top view which shows the support structure of a cabin. It is a right view of a combine when a cabin is in a leaning posture. It is a side view of the bearing part for rotation when a cabin exists in a normal use attitude | position. It is a side view of the bearing part for rotation when a cabin exists in a forward leaning attitude | position. It is a side view of the bearing part for rotation when a cabin exists in a middle inclination posture. It is a right view of the combine of the state which opened the door of the cabin. It is a front view of a driving part when an engine bonnet is in a maintenance posture.

Hereinafter, the combine which concerns on this invention is demonstrated based on drawing.
As shown in FIGS. 1 and 2, the combine is configured such that the traveling machine body 2 can travel by driving a pair of left and right crawler-type traveling devices 1, and a planted grain culm in the field is located at the front of the traveling machine body 2. And a cutting part 3 for conveying the harvested cereal to the rear is provided so as to be swingable around the horizontal axis P1.

  The cutting unit 3 includes a weeding tool 4 for weeding the harvested grain culm, a pulling device 5 that causes the planted culm in a lying position to be in a standing position, and a clipper-type trimming that cuts the planted grain culm The apparatus 6 and the vertical conveying apparatus 7 etc. which convey the harvested cereal meal back are comprised.

  The traveling machine body 2 receives the harvested cereals harvested by the harvesting unit 3, and threshing and sorting the threshing device 8, and cereal storing the grains obtained by threshing and sorting by the threshing device 8 The grain tank 9 is mounted on the machine frame 10, and a driving unit 11 is provided at a location in front of the grain tank 9 in a state supported by the machine frame 10, and a cabin 12 that covers the top of the driving unit 11 is provided. ing.

As shown in FIGS. 4 and 5, the driving unit 11 is provided with a control tower 15 in a state of standing from the driving unit step 14 on the front side of the driver seat 13, and a control lever is provided above the control tower 15. 16 and a front panel 18 including a display device 17 for displaying various information. On the left side of the driver's seat 13, a side panel 20 having a shift lever 19 and other operating tools is provided. The lower right side surface of the side panel 20 is partitioned from the interior of the fuselage by a wall body 21. The lower side of 13 is partitioned from the inside of the driving portion by a front cover portion 22A of an engine bonnet 22 as will be described later. The rear side of the driver seat 13 is also configured to be partitioned from the outside as will be described later.
And the upper part of this operation part 11 is covered with the cabin 12, and the operation room R1, which is a closed space in a state of being partitioned from the external space, is formed in the operation part 11.

  An air supply portion R2 having an air cleaner 24 connected to a combustion air intake system in the engine 23 is provided on the rear side of the driver seat 13 and is connected to the air cleaner 24 through an intake hose 25. The cleaner 26 is arranged at a high position above the air cleaner 24, and is configured such that outside air with less dust above the airframe is purified by the precleaner 26 and the air cleaner 24 and supplied as engine combustion air.

  The air cleaner 24 is supported by a support frame 27 erected from the body frame 10 via a bracket 28, and the precleaner 26 is attached to and supported by the rear end portion of the upper portion of the cabin 12. Further, the cab R1 and the air supply portion R2 are configured to be partitioned by a partition portion 29. The configuration of the partition portion 29 will be described later.

  A driving unit 30 is provided below the driver seat 13 in the driving unit 11. As shown in FIG. 6, the driving unit 30 includes an engine 23, a radiator 31 for cooling, a fan 32 for generating cooling air, and intake air as cooling air. And a dust proof net 33 for removing dust from the outside air, an engine bonnet 22 surrounding the engine 23, and the like.

  As shown in FIGS. 4 to 6, the engine bonnet 22 includes a front side cover portion 22 </ b> A that covers the front side of the engine 23, and a side cover portion that covers one side of the engine 23 and includes an outside air intake portion 34. Each of 22B and the upper side cover portion 22C that covers the upper side of the engine 23 is integrally connected. The driver seat 13 is supported by the upper cover portion 22C of the engine bonnet 22 through the slide rail 13A so as to be freely movable in the front-rear direction.

  As shown in FIG. 6, the lateral cover portion 22 </ b> B is provided with an inner wall surface 35 and an outer wall surface 36 that are spaced apart from each other in the width direction of the fuselage, and between the inner wall surface 35 and the outer wall surface 36. And an outer peripheral wall 37 surrounding the outer peripheral portion of the space. As described above, the porous outside air intake portion 34 is formed on the outer wall surface 36 of the side cover portion 22B, and is configured to function as an intake duct. The side cover portion 22B is formed in a tall height extending to a position higher than the upper side cover portion 22C so that a sufficient area of the outside air intake portion 34 can be taken.

As shown in FIGS. 4 and 6, the engine bonnet 22 is rotatable about a longitudinal axis X in the longitudinal direction of the aircraft via a support shaft 39 on a bracket 38 fixed to the aircraft frame 10 on both sides in the longitudinal direction of the aircraft. And can be switched between a normal posture (see FIG. 6) surrounding the engine 23 and a maintenance posture (see FIG. 16) in a sideways state.
When the engine bonnet 22 is switched to the maintenance posture, the space above the engine 23 in the prime mover 30 is opened, and the maintenance work of the prime mover 30 can be easily performed. Incidentally, the engine bonnet 22 is configured to be held in a fixed position by the buckle mechanism 101 that engages with the locking tool 100 provided on the wall body 21 in a state in which the engine bonnet 22 is switched to the normal posture.

Next, the configuration of the cabin 12 will be described.
As shown in FIGS. 1, 2, and 4, the cabin 12 is located at the upper part of the control tower 15, and the front glass surface 40 is formed in an oblique posture that is located on the front side of the aircraft toward the upper side, and both left and right sides thereof. A side face 42 having a substantially triangular side glass surface 41 in side view, a left side of the driver's seat 13, and a sliding window 43 that can be opened and closed by sliding laterally. A left side portion 44, a rear surface portion 47 having an arcuate glass surface 45 and a flat glass surface 46 on both the left and right sides, and a substantially plate-like ceiling portion covering the entire upper surface, located behind the driver seat 13. A cabin main body 49 is constituted by each of 48. Further, an entrance / exit 50 (see FIG. 15) is formed on the right side of the cabin main body 49, and the aircraft body is in a closed state in which the entrance / exit 50 is closed and an open state in which the entrance / exit 50 is formed. A door 51 is provided so as to be able to swing open and close around a longitudinal axis Y1 on the front side. In addition, the ceiling part 48 is equipped with an air conditioner and a radio (not shown) for air-conditioning the inside of the cab R1.

  As shown in FIG. 1, the door 51 has a front edge formed in a straight line over the entire width in the vertical direction, and an upper half of a rear side edge formed in a straight line. The lower half of the part is formed narrower toward the lower side so as to follow the outer peripheral edge of the side cover part 22B of the engine bonnet 22. In addition, the door 51 is supported by a frame 53 on the outer peripheral portion, and the area on the front side of the portion surrounded by the frame 53 is configured as a window 55, and the area on the rear side of the door 51 is a wall 56. The wall body 56 is provided with a grip operation portion 57 for opening and closing operation, and a holding mechanism (not shown) for holding the closed state is provided inside the grip operation portion 57.

  The window portion 55 is made up of two upper and lower glasses, that is, a lower glass 59 in a fixed position and an upper glass 60 slidable in the vertical direction. The driver is configured to be able to open the side of the driver who is seated.

Next, the frame structure of the cabin 12 will be described.
As shown in FIGS. 7 to 9, on the right side of the cabin 12, the frame of the windshield portion (the front glass surface 40 and the side glass surface 41) is located on the front side of the machine body and extends in the vertical direction. And a right front column 61 as a column that forms the frame portion of the door 51 and a right rear column 62 as a support frame that receives and supports the swing end side of the door 51, and is provided on the left side. The surface portion is provided with a rectangular window frame member 63 for supporting the sliding window portion 43, and the ceiling portion 48 is provided with a ceiling frame member 64 along the outer peripheral portion thereof. Further, a rear surface portion formed in a curved shape in plan view over the middle portion in the vertical direction of the right rear side support column 62 and the window frame member 63 of the left side surface portion 44 in substantially the same manner as the rear side portion of the ceiling frame member 64. The lower frame portion 47A of the front surface portion 42 is formed in a curved shape in plan view across the right front column 61 and the window frame member 63 at the lower portion of the front surface portion 42. Are connected.
The right front column 61, the right rear column 62, the window frame member 63, the ceiling frame member 64, the lower frame portion 47A of the rear surface portion 47, and the lower frame portion 42A of the front surface portion 42 are integrally connected. Thus, the frame of the cabin 12 is configured.

  As shown in FIG. 10, the right front column 61 is formed in a rectangular tube shape so as to increase rigidity in order to support the entire cabin 12 when the posture is changed as will be described later. The internal space 61 is used to store an air conditioning apparatus (not shown) provided in the cabin 12, electrical wiring such as a radio, air conditioning piping, and the like.

  As shown in FIG. 7, the right rear side support column 62 has an upper end connected to the ceiling frame member 64 and extends to the middle in the vertical direction, and the lower side of the lower right side support column 62 is below the lower end portion. It is in an open state. Therefore, when the door 51 is switched to the open state, the rear lower portion of the right side portion of the cabin 12 is opened so as not to interfere when the engine bonnet 22 is switched from the normal posture to the maintenance posture. It has become. As shown in FIG. 9, a grip operation unit 97 is provided on the lateral outer side of the right rear column 62 to be held by a hand when the driver gets on and off.

  The driver's seat 13 is supported so that the front-rear position can be adjusted along a slide rail 13A of the upper side cover portion 22C described later. Then, as shown in FIG. 15, when the door 51 is in the open state, the rear lower side of the right side of the cabin 12 is opened, so that the driver seat 13 is positioned at the forefront along the slide rail 13A. As shown in FIG. 16, the engine hood 22 is configured such that the driver seat 13 passes through the opening 50 for getting in and out of the cabin 12 while the driver seat 13 is supported on the upper part of the engine hood 22. Can be switched from the normal posture to the maintenance posture.

  As shown in FIG. 7, the right rear column 62 is provided with a bonnet connecting portion 67 to which a connected portion 66 provided in the engine bonnet 22 is connected, and the engine bonnet 22 is switched to the normal posture. Thus, the knob bolt 68 can be screwed and fastened and fixed over the connected portion 66 and the bonnet connecting portion 67 of the engine bonnet 22. By connecting the right rear column 62 and the engine bonnet 22 in this way, the rigidity of the rear portion of the cabin 12 is further increased.

  Further, the right rear column 62 is provided with a door holding unit 69 for holding and holding a holding mechanism provided in the door 51 in order to hold the door 51 in a closed state. On the outer peripheral wall of the lateral side portion 62 and the lateral cover portion 22 </ b> B, a receiving portion 70 that receives an edge portion on the swing end side of the door 51 is provided. The outer periphery of the door 51 is provided with a sealing material (not shown) for increasing the airtightness of the cab R1 in a state where the door 51 is closed by contacting the receiving portion 70.

  As described above, the side cover portion 22B of the engine bonnet 22 fastened by the knob bolt 68 and the right rear side support column 62 are configured to receive and support the swing end portion of the door 51.

  As shown in FIGS. 4 and 5, in the lower part of the rear surface portion 47 in the cabin 12, as a partition portion 29 for partitioning the air supply portion R <b> 2 and the cab R <b> 1, the lower frame portion 47 </ b> A of the rear surface portion 47 of the cabin 12 is provided. A continuous horizontal surface portion 72 and a vertical wall portion 73 connected to the front end portion of the horizontal surface portion 72 are formed. Further, an upper side vertical wall portion 73A that constitutes a part of the upper side of the vertical wall portion 73 is formed integrally with the cabin 12, and a lower side vertical wall portion 73B that constitutes a part of the lower side of the vertical wall portion 73. Is provided integrally with the upper side cover portion 22C of the engine bonnet 22, and the upper end edge 73B1 of the lower side vertical wall portion 73B and the lower end edge 73A1 of the upper side vertical wall portion 73A abut each other and overlap each other. A vertical wall portion 73 is formed.

Next, a support structure for the aircraft frame 10 of the cabin 12 will be described.
The cabin 12 has a normal use posture (see FIG. 1) that covers the upper portion of the driving unit 11, and a leaning posture that overlaps with the cutting unit 3 in the vertical direction so as to open the upper part of the driving unit 11 and cover the upper part of the cutting unit 3. As an example, it is supported by the body frame 10 so as to be swingable around the lower horizontal axis P2 over a forwardly tilted posture (see FIG. 11) (a posture inclined about 90 degrees from the normal use posture).

  A specific configuration will be described. The cabin 12 is supported such that the front side of the aircraft body is swingable around the horizontal axis P <b> 2 at a position on the upper front end side of the front frame 10 </ b> B in the aircraft frame 10. As shown in FIGS. 10 and 12, at the right side of the cabin 12 on the front side of the machine body, the lower end of the right front column 61 is supported by a bearing 74 fixed to the front frame 10 </ b> B. It is supported so as to be swingable with respect to the support shaft 75. The bearing portion 74 is supported by a base body 77 fixed to the front side frame 10 </ b> B with a bolt 76, a pair of left and right vertical plates 78 erected from the base body 77, and a pair of left and right vertical plates 78. In addition, it comprises a cylindrical member 79 in which the lateral support shaft 75 is fitted, so that the lateral support shaft 75 can be stably supported.

  10 and 12, a pair of left and right support members 80 fixed respectively to the left and right side surfaces at the lower end of the right front side column 61 are lateral support shafts 75 protruding from the bearing portion 74 to the left and right sides. The right front portion support column 61 is supported so as to be swingable in a stable state with little wobbling in the left-right direction with respect to the lateral support shaft 75. Incidentally, the support member 80 is prevented from being detached by a retaining pin 81b through a washer 81a.

  Further, as shown in FIG. 12, the pair of left and right support members 80 fixed to the right front side support column 61 is formed of a trapezoidal plate body that is substantially reversed in a side view, and the longitudinal direction of the right front side support column 61 A regulating surface 80b is formed along the line. Then, when the cabin 12 is switched to the forward tilted posture, the regulating surface 80b comes into contact with the fixed receiving support portion 54 on the lateral side wall of the front side frame 10B so that further swinging is regulated. (See FIG. 13).

As shown in FIGS. 8 to 10, on the left side of the cabin 12, a support arm 52 that is connected to an intermediate portion of the lower frame portion 63 a of the window frame member 63 and is bent in a substantially L shape in side view is It is pivotally connected to a lateral support shaft 83 supported by a bearing 82 fixed to the part side frame 10B. Like the right bearing portion 74, the bearing portion 82 includes a base body 77, a pair of left and right vertical plate portions 78, and a cylindrical member 79 so that the lateral support shaft 83 can be stably supported. It has become. In addition, the axis of the horizontal support shafts 75 and 83 on both the left and right sides is provided so as to be positioned on the same horizontal axis P2.
On the left side of the cabin 12, when the cabin 12 is in a normal use posture, the lower surface of the window frame member 63 is received and supported by a left side frame 10 </ b> C having a substantially arched side view fixedly erected from the body frame 10. Is configured to do.

A pair of left and right support members 84 fixed to the left and right side surfaces at the lower end of the support arm 52 are externally fitted to the lateral support shafts 83 projecting from the bearing portion 82 to the left and right sides, and the support arm 52 is The horizontal support shaft 83 is swingably supported in a stable state with little wobbling in the left-right direction. The pair of left and right support members 84 are prevented from being detached by a retaining pin (not shown) via a washer.
Further, the support member 84 is formed with a restriction surface 84b similar to the restriction surface 80b of the support member 80 provided at the lower end portion of the right front side support column 61, and when the cabin 12 is switched to the forward tilted posture, The surface 84b is in contact with the receiving support portion 54 so that further swinging is restricted (see FIG. 8).

  As shown in FIG. 10, the pivotal support portion of the support arm 52 is located closer to the center side in the body width direction than the left end portion of the cabin 12 in order to avoid interference with the vertical conveying device 7 and the like in the cutting unit 3. The support arm 52 has a shape that is bent in a substantially L shape not only in a side view but also in a longitudinal direction of the body.

As shown in FIG. 12, a locked portion 85 is provided in a state of projecting sideways on a support member 80 fixed to the right front column 61, and the cabin 12 tilts forward by about 20 degrees from the normal use posture. When the intermediate inclined posture is reached , a locking member 86 is provided as a position regulating mechanism that is locked to the locked portion 85 and restricts further forward inclination (see FIG. 14). The locking member 86 is supported by a vertical plate member 87 whose base end side is fixed to the front side frame 10B so as to be swingable around the lateral axis P3, and is hooked on the locked portion 85 and engaged on the swing end side. A free hook portion 88 is formed.

  The locking member 86 has a locking position where the hook portion 88 is locked to the locked portion 85 (see FIG. 12), and swings downward so that the hook portion 88 is separated from the locked portion 85. Each of the unlocking positions (see FIG. 13) to be configured is configured to be selectively held.

That is, as shown in FIG. 12, the locking pin 89 formed in the middle of swinging of the locking member 86 on the rear side of the machine body from the swinging shaft core P3 is formed in the circular arc shape formed in the vertical plate member 87. A crane-wound spring 91 is provided that is inserted through the long hole 90 and is movable along the long hole 90 and presses and urges the locking pin 89 toward the front side of the machine body.
The locking pin 89 is configured to be pressed and urged forward by the crane spring 91 at each of the upper side and the lower side of the dead point DP at the center of the long hole 90, and when the dead point DP is exceeded upward. When the dead point DP is moved downward toward the locking position, the movement is biased toward the locking release position, and each of the locking position and the locking release position is selected. The position can be held freely.
By the way, the intermediate tilt posture that tilts forward by about 20 degrees from the normal use posture is used when performing minor maintenance work on the prime mover 30 with a relatively small labor burden in the tilting operation of the cabin 12. Is.

  As shown in FIG. 12, in the normal use posture, the bottom plate 61A fixed to the lower end of the right front column 61 in the cabin 12 is fastened and fixed to the front frame 10B by bolts 61B. The bolt 61B is removed when the 12 is switched to the forward tilted posture.

  In the normal use posture, the rear portion of the cabin 12 is a support bracket in which a connecting member 92 extending from the left and right center portion of the lower frame portion 47A of the rear surface portion 47 is fixed to the upper end portion of the support frame 27 erected from the body frame 10. It is configured to be fastened and fixed to 94 with a knob bolt 95.

  The front portion of the cabin 12 is divided into an upper side portion D1 and a lower side portion D2, and the upper side portion D1 is located in a state of being connected to the lower side portion D2 in the normal use posture, and in the forward leaning posture. The upper side portion D1 is configured to be positioned in a state of being separated from the lower side portion D2 and overlapping with the cutting portion 3 in the vertical direction.

In other words, the front wall portion 15A of the control tower 15 constitutes an outer wall exposed to the outside, and the front portion 42 of the cabin 12 and the front wall portion 15A of the control tower 15 are arranged in front of the cabin 12. The outer wall surface of the part is formed. The front portion 42 of the cabin 12 is connected to and connected to the upper receiving surface 103 provided on the upper side of the front wall portion 15A of the control tower 15 in the normal use posture, and is located in front of the control tower 15 in the forward-turned posture. It is comprised so that it may space apart from the wall part 15A, and may be located in the state which overlaps with the cutting part 3 in the up-down direction.
Therefore, in this embodiment, the front part 42 of the cabin 12 corresponds to the upper part D1, and the front wall part 15A of the control tower 15 corresponds to the lower part D2.

When the cabin 12 switches from the normal use posture to the forward leaning posture, the lower side of the front portion 42 of the cabin 12, that is, the lower front portion of the cabin 12 is open, and is supported by the right front column 61. A large area between the arm 52 and the arm 52 is opened to form a large opening Q.
The opening Q is configured such that when the cabin 12 is switched from the forward leaning posture to the normal use posture, the opening 12 is closed by the control tower 15 and the front lower portion of the cabin 12 is closed.

When changing the posture of the cabin 12 between the normal use posture and the forward leaning posture, the load of the cabin 12 is supported by the right front side column 61 and the support arm 52 so as to be swingable. 61 is configured to mainly support the load, and the support arm 52 is configured to support the load in an auxiliary manner.
Further, as shown in FIG. 3, the right front portion side column 61 is provided in a state of being located on the right outer side with respect to the right end portion of the cutting portion 3, and even if tilted forward around the horizontal axis P2. There is no interference with the cutting part 3.

  On the other hand, the support arm 52 is provided at a position overlapping with the cutting unit 3 when viewed from the front-rear direction of the fuselage. However, as shown in FIG. 8, the support arm 52 is formed in a substantially L shape when viewed from the side. When in the posture, the cutting unit 3 is configured to bypass the cutting unit 3 while passing over the cutting unit 3.

Since the precleaner 26 is attached to and supported by the rear end portion of the ceiling portion 48 of the cabin 12, the cabin 12 holds the precleaner 26 by the ceiling portion 48 when the cabin 12 is switched from the normal use posture to the forward tilted posture. At that time, by separating the intake hose 25 at the lower portion of the precleaner 26, the lower intake hose 25 and the air cleaner 24 remain on the traveling machine body 2 side (FIG. 11).
Instead of such a configuration, the precleaner 26 may be separated from the ceiling portion 48 so that the precleaner 26 remains on the traveling machine body 2 side.

  Then, as shown in FIG. 11, when the cabin 12 is switched from the normal use posture to the forward tilted posture, the upper portion of the cutting portion 3 is moved with respect to the opening Q formed in the lower portion of the front portion of the cabin 12 as described above. It is configured to enter.

  Further, as shown in FIG. 11, when the cabin 12 is switched to the forward tilted position, the front end portion of the cabin 12 (the uppermost portion of the ceiling portion 48 in the normal use posture) is the front end of the weeding tool 4 of the cutting unit 3. The upper end portion of the cabin 12 (the rearmost portion of the ceiling portion 48 in a normal posture) is located at the upper end position of the intake hose 25 (when the precleaner 26 remains on the airframe side). Is substantially the same height as the upper end position of the pre-cleaner 26, and is positioned slightly higher than the grain discharging auger 102. This height is lower than the height in the normal posture (see FIG. 1) by a set amount.

  The posture changing operation over the normal use posture and the forward leaning posture of the cabin 12 is performed manually. However, in order to manually change the posture of the right front part column 61 facing the outside of the machine body, the vertical direction is changed. A long grip operation unit 96 is provided.

By the way, when changing the posture of the cabin 12 between the normal use posture and the leaning posture, a large load is applied. For example, the posture can be changed while supporting the load using an external auxiliary device such as a hoist or a crane. In order to reduce the labor burden associated with the changing operation, it is necessary to provide a large air damper (not shown) for supporting the load of the cabin 12 in an auxiliary manner.
However, changing the posture of the cabin 12 to the leaning-down posture is the height that can be stored in the container when carrying out maintenance work such as large-scale maintenance and inspection work or when the combine is transported in a container (not shown), for example. The posture is changed to fit in, and the frequency is not so high. Therefore, the external auxiliary device as described above or a large air damper that is separately attached is used only when performing such a posture changing operation. I am doing so. Incidentally, the air damper is provided over a position slightly above the swing fulcrum of the right front side column 61 and a position on the front side of the machine body from the swing fulcrum of the engine bonnet 22.

  If the cabin 12 is in the normal use posture, the cabin 12 and the engine bonnet 22 are connected to each other, and if the cabin 12 is in the forward leaning posture, the cabin 12 and the engine bonnet 22 are separated. 6, the vertical wall portion 73 is separated into a lower-side vertical wall portion 73 </ b> B provided integrally with the engine bonnet 22 and an upper-side vertical wall portion 73 </ b> A provided integrally with the cabin 12. Has been. And each of the upper end edge 73B1 of the lower side vertical wall part 73B and the lower end edge 73A1 of the upper side vertical wall part 73A is positioned downward as it goes from the side where the side cover part 22B exists toward the inward side in the body width direction. It is formed in an inclined shape.

As shown in FIG. 16, the inclination angle of the upper edge 73B1 of the lower-side vertical wall portion 73B which is formed in an inclined shape, is swung over the normal position and the maintenance position of the engine hood 22 in the longitudinal axis X around When the upper edge 73B1 of the lower vertical wall portion 73B does not interfere with the cabin 12, and the engine bonnet 22 is switched to the normal posture, the upper edge 73B1 of the lower vertical wall portion 73B and the upper vertical wall The angle is set such that the lower end edge 73A1 of the portion 73A abuts the top and bottom and overlaps. Then, the upper end edge 73B1 of the lower side vertical wall part 73B and the lower end edge 73A1 of the upper side vertical wall part 73A are overlapped to form the vertical wall part 73 that partitions the air supply part R2 and the cab R1. It is configured. Incidentally, although not shown, the upper end edge 73B1 of the lower side vertical wall part 73B and the lower end edge 73A1 of the upper side vertical wall part 73A are abutted and overlapped with each other, but no gap is generated between them. It is the structure which interposes a sealing material in.

  In a combine having such a configuration, for example, when performing regular maintenance work such as refueling of engine oil, as shown in FIG. 16, the driver seat 13 is in a state where the door 51 of the cabin 12 is switched to the open state. And the engagement of the buckle mechanism 101 is released, and the knob bolt 68 is loosened with the cabin 12 covering the operation unit 11, so that the connected portion 66 of the engine bonnet 22 is connected. This can be dealt with by releasing the connection between the engine hood 22 and the hood connecting portion 67 of the cabin 12 and switching the engine hood 22 from the normal posture to the maintenance posture.

  Also, when the combine is transported in a container, if it is necessary to store the combine at a height that can be stored in the container, the knob bolt 68 is loosened to release the connection between the engine bonnet 22 and the cabin 12 as shown in FIG. Then, the knob bolt 95 is loosened to release the connection between the connecting member 92 extended from the lower frame portion 47A of the rear surface portion 47 and the support bracket 94, and the bolt 61B is loosened to loosen the bottom plate 61A of the right front side column 61 and the driving force. This can be dealt with by releasing the connection with the part frame 10B, attaching a large air damper (not shown), and operating the grip operation part 96 to switch the cabin 12 to the forward tilted position.

  Further, when performing maintenance work such as large-scale maintenance and inspection work around the engine 23 and around the driving unit 11, the engine bonnet 22 is switched from the normal posture to the maintenance posture, and the cabin 12 is brought into the leaning posture. This can be done by switching.

[Another embodiment]
(1) In the above-described embodiment, the cabin 12 is configured to switch between the forward leaning posture inclined about 90 degrees from the normal use posture and the intermediate inclined posture inclined about 20 degrees from the normal use posture as the leaning posture. The tilting posture is not limited to such a configuration, and the tilting posture may be a tilt angle smaller than 90 degrees or a tilt angle larger than 90 degrees. In addition, instead of falling to the front side of the fuselage as a tilted posture, the cabin 12 is switched to a sideways tilted posture in which the cabin 12 tilts outward from the side of the fuselage around the longitudinal axis of the aircraft, or with respect to the longitudinal direction of the aircraft For example, a configuration that switches to a tilted and tilted posture that tilts outward about the axis around the oblique direction may be used.

(2) In the above-described embodiment, the cabin 12 is configured to switch to the forward tilted posture in which the upper part of the operation unit 11 is opened as the tilted posture. However, instead of such a configuration, the cabin 12 is operated inside the cabin 12. It is good also as a structure which switches to the fall position integrally, with the part 11 provided.

(3) In the above embodiment, the front wall portion 15A of the control tower 15 forms an outer wall exposed to the outside, and the cabin is formed by the front surface portion 42 of the cabin 12 and the front wall portion 15A of the control tower 15. 12, the front wall portion 42 of the cabin 12 constitutes the upper portion D1, and the front wall portion 15A of the control tower 15 constitutes the lower portion D2. Instead of the configuration, the control tower 15 is provided in a state of being accommodated in the cabin 12, and the front portion of the cabin 12 is divided into a front surface portion 42 (upper side portion D1) and a lower side wall body (lower side portion D2) connected thereto. ) (Not shown), and in the normal use posture, the front side portion 42 and the lower side wall body are in a continuous state, and in the forward tilted posture, the lower side wall body remains as it is, and only the front side portion 42 swings forward. Configure to work Or it may be of.

(4) In the above embodiment, the configuration in which the cabin 12 is swingably supported by the right front column 61 and the support arm 52 has been described. However, instead of such a configuration, the support arm 52 is not provided. The cabin 12 may be swingably supported only by the right front column 61.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a combine that includes a cutting portion at a front portion and a cabin that covers a driving portion.

DESCRIPTION OF SYMBOLS 2 Traveling body 3 Cutting part 10 Airframe frame 11 Operation part 12 Cabin 13 Driver's seat 40,41 Windshield part 42 Front part 50 Entrance / exit 51 Door 61 Right front side support | pillar (support)
86 Locking member (position regulating mechanism)
D1 Upper part D2 Lower part P2 Horizontal axis Q Opening

Claims (5)

A combine that is provided with a cutting part on the front side of the traveling machine body, and a cabin that covers the upper part of the driving part located on the front side one side of the traveling machine body,
The cabin is configured to include a column that forms a frame portion of the windshield portion and a door frame portion that opens and closes an entrance, and the lower end portion of the column is swingable around a horizontal axis. By supporting it on the frame, it can be freely changed in posture over the normal use posture and the tilted posture that tilts outward from the normal use posture ,
The cabin can be changed to a forward tilted posture that opens vertically above the mowing unit and overlaps with the mowing unit in a vertical direction so as to cover the upper part of the mowing unit as the tilting posture. Is supported by the machine frame so that it can swing freely.
A combine configured such that when the cabin is switched from the normal use posture to the forward leaning posture, an upper portion of the mowing portion enters an opening formed in a lower portion of the front portion of the cabin . The front part of the cabin is divided into an upper part and a lower part;
In the normal use posture, the upper side portion is located in a state of being connected to the lower side portion, and in the collapsed posture, the upper side portion is separated from the lower side portion and corresponds to the lower side portion. Combine of claim 1, wherein the opening is configured to be formed. The combine according to claim 1 or 2 , wherein the forward leaning posture is a forward leaning posture inclined about 90 degrees forward from the normal use posture. A combine that is provided with a cutting part on the front side of the traveling machine body, and a cabin that covers the upper part of the driving part located on the front side one side of the traveling machine body,
The cabin is configured to include a column that forms a frame portion of the windshield portion and a door frame portion that opens and closes an entrance, and the lower end portion of the column is swingable around a horizontal axis. By supporting it on the frame, it can be freely changed in posture over the normal use posture and the tilted posture that tilts outward from the normal use posture,
In the state where the cabin is in the normal use posture, the lower end of the support column is placed and supported on the body frame, and the horizontal axis is located in front of the lower end of the support column . The combine according to any one of claims 1 to 4, further comprising a position restricting mechanism for restricting the position of the cabin in an intermediate inclined posture positioned between the normal use posture and the fall posture.

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