JP6765348B2 - combine - Google Patents

Description

The present invention relates to a combine in which working parts such as a threshing device and a grain storage part are mounted and supported on an airframe frame.

Conventionally, there has been a configuration in which a tank support frame is extended so as to project rearward from the rear end of the airframe, and a fuel tank is placed and supported on the tank support frame (for example, Patent Documents). 1).

Japanese Unexamined Patent Publication No. 2014-183815

In the above conventional configuration, the fuel tank is supported by the tank support frame provided so as to project rearward from the fuselage frame, so that the fuel tank located at the rear end of the fuselage as the fuselage travels becomes a ridge or other obstacle. May be damaged by contact with. Therefore, in order to avoid such a disadvantage, it is conceivable to construct a structure in which the rigidity of the fuel tank is significantly higher than the rigidity originally required for the fuel tank, but as a result, there is a disadvantage that the cost is high. There was a certain aspect.

Further, in the combine harvester, the front-rear weight balance of the airframe tends to be the front weight. Therefore, in the above-mentioned conventional configuration, the fuel tank provided at the rear part of the airframe is regarded as a heavy object and used to improve the weight balance between the front and rear of the airframe, but the fuel tank consumes the stored fuel. Since the weight changes, there is also a disadvantage that it does not function sufficiently as a heavy object for improving the front-rear weight balance.

Therefore, it has been desired to improve the front-rear weight balance in addition to increasing the strength against contact with obstacles without incurring a high cost.

The characteristic configuration of the combine according to the present invention is that a rear frame is continuously provided at the rear end of the machine frame on which the working portion is mounted and supported so as to project rearward from the machine frame, and a balance weight is provided on the rear frame. the weight mounting portion is provided, et al is attachable to the lower side of the body frame, provided with a support frame of longitudinal direction for supporting the track frame of the traveling device, wherein the support frame, the lower position of said rear frame The rear frame is at a point where it is mounted and supported on the support frame .

According to the present invention, a rear frame is provided at a position protruding rearward from the fuselage frame, and a balance weight can be attached to a weight attachment portion provided on the rear frame. Since the balance weight has no special function other than the function as a heavy object, it does not cause an increase in cost, and since the balance weight is located at the rear end of the fuselage, the balance weight should be used as a strength member against obstacles. Can be done. Then, the large weight balance weight can improve the front-rear weight balance of the airframe, which tends to have a front weight.

Therefore, in addition to increasing the strength against contact with obstacles without increasing the cost, it has become possible to improve the front-rear weight balance.
Further, according to the present configuration, the front-rear support frame is a main frame structure for supporting the weight of the entire body to the traveling device via the track frame among the body frames. Therefore, it has a sufficiently large support strength. Since the rear frame is mounted and supported on the support frame, the rear frame can be firmly supported by the support frame having high support strength.

In the present invention, the rear frame is a left and right front-rear frame body extending rearward from the rear end portion of the airframe frame, and a lateral frame body provided over the left and right front-rear frame bodies. It is preferable that and is provided.

According to this configuration, since the horizontal frame body is provided over the left and right front-rear frame bodies, a function required by providing a plurality of horizontal frame bodies while leaving the left and right front-rear frame bodies as they are. The specifications can be easily changed, such as changing the number of frames according to the above, or changing only the horizontal frame body to a different shape.

In the present invention, a plurality of the lateral frame bodies are provided in a state of being lined up in the front-rear direction.
It is preferable that the weight mounting portion is provided on the lateral frame body located on the rearmost side of the plurality of lateral frame bodies.

According to this configuration, since the balance weight is attached to the rear frame located on the rearmost side, the load moment due to the balance weight becomes large, and the weight of the balance weight can be efficiently used to contribute to the improvement of the front-rear weight balance. Become a thing.

In the present invention, it is preferable that the lateral frame body is formed in a solid state.

According to this configuration, by forming the rear frame in a solid state, the weight of the rear frame itself becomes large, the rear frame has a function as a heavy object, and the rigidity of the rear frame, which is highly likely to come into contact with obstacles, is increased. You can also.

In the present invention, it is preferable that the lateral frame body is composed of a hollow outer frame member and a weight member filled in the hollow inside of the outer frame member.

According to this configuration, for example, when the work part mounted on the machine frame is changed to a different type of work part to support a model that does not require much weight on the rear side, a weight member is used. It can be handled by removing it and configuring the rear frame only with the outer frame member, and it can be used properly according to the difference in model.

In the present invention, the fuel tank is arranged over the rear end portion of the airframe frame and the rear frame.
It is preferable that the fuel tank is supported by the rear end portion of the airframe frame and the rear frame.

According to this configuration, the fuel tank is firmly supported by the rear end portion of the fuselage frame and the rear frame. Since the fuel tank is located on the rear end side of the machine body, refueling work and the like can be easily performed from the rear outside of the machine body, and the weight of the fuel tank itself can be used as a balance weight.

It is a right side view of the combine. It is a top view of the combine. It is a left side view of the combine. It is a side view which shows the grain storage part and the crawler running device. It is a top view of the airframe frame. It is a rear view of a combine. It is a perspective view of the airframe frame. It is a perspective view which shows the support structure of a track frame. It is a partial vertical sectional plan view of the rear frame arrangement part. It is a partial vertical sectional side view of the rear frame arrangement part. It is a side view of the front part of a crawler traveling device. It is a side view which shows the refueling structure of a mission case. It is a partial cross-sectional plan view of the rear part of a crawler traveling device. It is a side view of the rear part of a crawler traveling device.

Hereinafter, a case where the embodiment according to the present invention is applied to a conventional combine as an example of a combine will be described with reference to the drawings.

〔overall structure〕
As shown in FIGS. 1, 2 and 3, the ordinary combine harvester is equipped with a driving unit 3 on the front right side of a traveling machine 2 equipped with a pair of left and right crawler traveling devices 1, and threshs the cut crops. A threshing device 4 as a unit and a grain storage unit 5 as another working unit for storing the grains obtained by the threshing treatment are provided. The grain storage unit 5 is provided in a state of being located on the rear side of the operation unit 3, the grain storage unit 5 is located on the right side of the machine body, and the threshing device 4 is located on the left side of the machine body. The threshing device 4 is placed and supported on the machine frame K side by side along the width direction of the machine. Further, the engine 6 is provided below the driving unit 3, and the power of the engine 6 is supplied to the combine through a transmission mechanism (not shown) in the transmission case 21 (see FIGS. 2 and 11) provided on the side of the engine 6. It is transmitted to each part.

In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the traveling direction of the aircraft in the working state, and when defining the left-right direction of the aircraft, the left and right are defined as viewed from the traveling direction of the aircraft. .. That is, the direction indicated by the reference numeral (F) in FIGS. 1 and 2 is the front side of the machine body, and the direction indicated by the reference numeral (B) in FIGS. 1 and 2 is the rear side of the machine body. The direction indicated by the reference numeral (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by the reference numeral (R) in FIG. 2 is the right side of the aircraft.

A feeder 7 which is a transport device for transporting culm culms is connected to the front part of the threshing device 4 so as to swing up and down around the horizontal axis core, and the front end of the feeder 7 has a cutting width equivalent to the width of the machine body. The parts 8 are connected. The cutting unit 8 has a rotary reel 9 that scrapes the planted culm backward, a clipper-type reaping device 10 that cuts and cuts the root of the planted culm, and laterally cuts the culm to the middle side in the width direction of the machine body. A horizontal feed auger 11 or the like for feeding and transferring is provided, and the grain culms cut by the cutting device 10 are laterally fed by the horizontal feed auger 11 and supplied to the feeder 7.

The driver unit 3 includes a driver's seat 12, a front panel 14 located in front of the driver's seat 12 and having a plurality of operating tools such as a steering operation lever 13, and a shift speed located on the left lateral side of the driver's seat 12. A side panel 17 and the like provided with various operating tools such as a lever 15 and a threshing clutch lever 16 are provided. On the right lateral side of the driver's seat 12, a dustproof duct 18 for sucking cooling air to the engine 6 by the action of a radiator fan (not shown) is provided. The driving unit 3 is provided with a driving unit canopy 19 having functions such as preventing sunlight from the driver seated in the driving unit 3 and avoiding rainwater.

The left and right sides of the threshing device 4 are covered by the side walls 4A, and the upper portion is covered by the top plate 4B. Although not shown, the harvested grains carried from the feeder 7 have a culm and a net (not shown) on the upper side of the internal space surrounded by the left and right side walls 4A and the top plate 4B. A handling room is formed to handle the culm. Further, at the lower part of the handling chamber, a sorting processing unit is provided for sorting the treated products leaking from the receiving net into secondary products such as grains and paddy with branches, and waste straw waste.

The grains sorted by the sorting processing section are discharged to the lateral outside on the grain storage section 5 side of the threshing device 4 by a first-class recovery screw (not shown). A grain raising device 20 composed of a screw conveyor is provided on the lateral outer side of the side wall 4A on the grain storage portion 5 side of the threshing device 4. The grains discharged laterally to the outside of the grain storage section 5 of the threshing device 4 are conveyed upward by the grain frying device 20 and stored in the grain storage section 5. The second product obtained in the sorting processing unit is reduced to the front side portion of the threshing device 4, and the waste straw waste and the like are discharged to the outside through the discharge case 4C on the rear side of the machine body of the threshing device 4.

[Mission case refueling structure]
As shown in FIG. 12, a refueling tank 23 is communicated with the mission case 21 via a refueling pipe 22. Oil is stored in the refueling tank 23, and the oil in the refueling tank 23 is supplied to the mission case 21 via the refueling pipe 22. A refueling plug 24 is provided on the upper part of the refueling tank 23. The refueling tank 23 is supported by the operation unit support frame 25. The refueling operation can be performed from the refueling plug 24 at such a high position in a state where it is easy to work. Then, in order to make it easy to understand how much refueling is being performed during the refueling work, the lid 26 is closed and the lid is closed at an intermediate position higher than the connection port of the mission case 21 of the refueling pipe 22. A plug 27 that can be opened by removing 26 is provided. When the plug 27 is opened, it can be confirmed that the oil has been supplied to the extent that the inside of the mission case 21 is filled. After the confirmation is made, a predetermined amount is added even though the plug 27 is closed, and an appropriate amount of oil is stored in the refueling tank 23.

[Crawler traveling device]
As shown in FIGS. 1 and 4, the crawler traveling device 1 is provided at a drive wheel 28 located on the front side of the machine body, a tension wheel 29 located on the rear side of the machine body, and an intermediate portion thereof at intervals in the front-rear direction. A plurality of grounding wheels 30, a crawler belt 31 wound around each of these wheels, an upper rolling wheel 32 acting on the upper side of the crawler belt 31, a track frame 33 for supporting the entire traveling device, and the like are provided. Has been done.

The drive wheels 28 are attached to the output shaft 34 (see FIG. 4) of the transmission case 21, and power from the engine 6 is supplied via a transmission mechanism in the transmission case 21 to rotate the crawler belt 31.

As shown in FIG. 11, the inclination guide angle θ formed by the horizontal plane and the virtual line connecting the rotating shaft core of the drive wheel 28 and the rotating shaft core of the grounding wheel 30 located on the frontmost side is about 49 degrees. Is set to. In this way, by making the slope gentler than before, the straight running performance in wet fields is improved.

As shown in FIGS. 13 and 14, a movable frame 35 movably supported in the front-rear direction is supported by the rear end portion of the track frame 33, and a tension wheel 29 is rotatably supported by the movable frame 35. By changing the front-rear position of the movable frame 35 with respect to the track frame 33, the tension of the crawler belt 31 can be changed and adjusted.

To add a description, a movable frame 35 is supported at the rear end of the track frame 33 so as to be slidable in the front-rear direction. A support bracket 36 is provided in a state of being continuously provided to the movable frame 35, and the tension ring 29 is rotatably supported by the support bracket 36. An adjusting bolt 37 for changing the front-rear position is provided between the track frame 33 and the support bracket 36. The adjusting bolt 37 is supported in a state in which the position of the adjusting bolt 37 is rotatably and restricted in the front-rear direction by a receiving member 38 connected to the rear end of the track frame 33. The adjusting bolt 37 is provided with a brim-shaped position regulating portion 39 in a fixed state on both the front and rear sides of the receiving member 38, and is supported by the receiving member 38 so as to be rotatable only. A male screw portion 37a formed on the rear side of the adjusting bolt 37 is screwed and mounted on the female screw portion 36a of the support bracket 36. By rotating the adjusting bolt 37, the support bracket 36 is screwed in the front-rear direction, and the front-rear position of the tension ring 29 can be changed.

A flat washer 42 is interposed between the position regulating portion 39 on the rear side of the adjusting bolt 37 and the receiving member 38. The shaft portion 37b located between the male screw portion 37a and the position regulating portion 39 on the rear side has a small diameter on the rear side having substantially the same diameter as the male screw portion 37a, and gradually increases in diameter toward the front side. Is formed in. With this configuration, the supporting strength against bending deformation of the adjusting bolt 37 in the radial direction is increased.

[Grain storage section]
The grain storage section 5 will be described.
As shown in FIG. 4, the grain storage unit 5 has a storage space for storing threshed grains, and a storage hopper 43 capable of discharging grains below the storage space, and a storage hopper 43. A collection unit 44 for collecting grains discharged from the hopper and a hopper support frame 45 for supporting the storage hopper 43 are provided. In the storage hopper 43, three downward narrowing funnel portions 46 are formed on the lower side, and discharge ports 47 capable of downwardly discharging grains are formed at the lower ends of the three funnel portions 46, and the discharge thereof A manually operated shutter mechanism 48 that can open and close the outlet 47 is provided.

The collection unit 44 is provided with a bag holding unit 49 that holds a grain storage bag for storing grains discharged from the discharge port 47 of the storage hopper 43 in a vertical position. The bag holding portion 49 is provided with a plurality of left and right supporting rods 49a extending in a cantilever shape in order to lock the bag holding portion 49 to the upper portion of the grain storage bag to maintain the vertical posture. At the lower part of the collection unit 44, a mounting table 50 for receiving and supporting a grain storage bag containing grains is provided.

On the right side of the mounting table 50, a work step portion 51 on which an auxiliary worker performing the grain collection work can ride is provided. The work step portion 51 is supported by the machine frame K so as to swing around the anteroposterior swing axis at the end on the side (left side) of the machine body, and has a working posture protruding laterally and outwardly of the machine body and the inside of the machine body. It is configured to be switchable to a retracted posture that retreats to the side. Further, on the upper side of the storage hopper 43, an auxiliary canopy 52 is provided which covers the upper side of the auxiliary worker working in the work area and has functions such as preventing sunlight and rainwater.

The hopper support frame 45 has a plurality of columns 54 erected from the machine frame K at intervals in the left-right direction at positions corresponding to both front and rear ends of the storage hopper 43, and the upper ends of the plurality of columns 54. It is provided with a left-right sideways frame 55 connected to the other side. The lower ends of the plurality of columns 54, which are distributed to both the front and rear sides, are connected to and fixed to the machine frame K, respectively. Then, on both front and rear portions, left and right lateral frames 55 are connected to each other over the upper ends of a plurality of columns 54 arranged in the left-right direction. The left side of the machine body, that is, the end of the threshing device 4 side is bolted to the side wall 4A of the threshing device 4 in each of the front and rear sideways frames 55.

The storage hopper 43 is supported by the hopper support frame 45. In FIG. 4, reference numeral 56 is a worker protection member that supports the auxiliary worker performing the bagging work from the rear side. Reference numeral 57 is a handrail that can be gripped and operated by an auxiliary worker.

[Airframe support structure]
Next, the airframe support structure will be described.
The traveling machine 2 is provided with a machine frame K for mounting and supporting a threshing device 4, a grain storage section 5, and the like. As shown in FIG. 5, the airframe frame K is formed in a substantially rectangular grid in a plan view, and is configured by connecting a plurality of front-rear frame bodies 58 and a plurality of lateral frame bodies 59 in a grid pattern. There is. The plurality of front-rear frame bodies 58 and the plurality of lateral frame bodies 59 are each composed of square tubular members, and they are integrally connected to form a support structure.

The fuselage frame K is provided with a driving unit support 60 for supporting the driving unit 3 on the right front side portion, and an engine support for mounting and supporting the engine 6 on the rear side of the driving unit support 60 via a mount rubber (not shown). A unit 61 is provided. The rear side of the engine support portion 61 is provided with front and rear storage portion support portions 62 that support both front and rear sides of the hopper support frame 45.

As shown in FIGS. 6 and 7, two front-rear support frames 63 and 64 for supporting the track frames 33 on both the left and right sides are provided below the airframe frame K. Of the two support frames 63, 64, the left support frame 63 located on the left side extends to a position where the front side corresponds to the front end of the track frame 33, and the rear side is laterally located on the rear side of the fuselage frame K. It extends to a position corresponding to the frame body 59.

Of the two support frames 63 and 64, the right side support frame 64 located on the right side extends to a position where the front side corresponds to the front end portion of the track frame 33, and the rear side is located at the rear end portion of the fuselage frame K. It extends toward the rear larger than the storage portion support 62 on the side.

As shown in FIGS. 5 and 7, the rear frame 65 is continuously provided so as to project rearward from the rear storage portion support 62 located at the rear end of the fuselage frame K. The rear frame 65 includes left and right front-rear frame bodies 66 extending rearward from the rear end portion of the airframe frame K, and sideways frame bodies 67 provided over the left and right front-rear frame bodies 66. ing.

As shown in FIGS. 5 and 7, two lateral frame bodies 67 are provided side by side in the front-rear direction, and each of the horizontal frame bodies 67 is formed in a solid state. That is, as shown in FIGS. 9 and 10, it is composed of a hollow outer frame member 68 and a weight member 69 filled in the hollow inside of the outer frame member 68.

A weight attachment portion 71 to which the balance weight 70 can be attached is provided on the lateral frame body 67 located on the rear side of the two lateral frame bodies 67. As shown in FIGS. 5 and 9, two balance weights 70 are attached to the sideways frame body 67 in a side-by-side state. The balance weight 70 is placed so as to cover from the upper side of the lateral frame body 67, and is attached to the lateral frame body 67 in a state where two points on both the left and right sides are fixed with bolts from the upper side.

The right side support frame 64 extends to a position below the rear frame 65, and the rear frame 65 is mounted and supported on the right side support frame 64. The right side support frame 64 is located below the center position in the left-right direction of the rear frame 65, and receives and supports the front and rear lateral frame bodies 67 from the lower side.

In the combine of the type in which the grains are stored by the storage hopper 43 like the combine in the present embodiment, the weight of the grain storage portion is lighter than that of the combine of the Glen tank type. Assuming that the combine of the Glen tank type and the fuselage frame K or the like are shared, the weight balance in the left-right direction of the fuselage and the front-rear direction of the fuselage tends to be biased. Therefore, the weight mounting portion 71 as described above is formed, and by placing the balance weight 70 on the weight mounting portion 71, it is possible to correct the bias of the weight balance as described above and improve the weight balance.

As shown in FIGS. 6 and 8, on the lower side of the fuselage frame K, the left and right track frames 33 are connected to each other, the left and right support frames 63 and 64 are connected to each other, and the shape is substantially arched in the front-rear direction. The formed arched frame 72 is provided. The arch-shaped frames 72 are provided on both front and rear sides of the machine body, respectively. A lower reinforcing rib 73 is provided on the lower side of the arched frame 72. The portion of the lower reinforcing rib 73 that bends in a substantially L shape has a curved shape so that the lower end edge does not extend linearly but the middle portion becomes narrower. Front-rear reinforcing ribs 74 extending in the front-rear direction over the front-rear arch-shaped frame 72 are provided. Similar to the lower reinforcing rib 73, the lower side of the front and rear reinforcing ribs 74 is also shaped so that the intermediate portion is narrowed. By forming in this way, stress is concentrated on the curved recesses of the narrowing reinforcing ribs 73 and 74, and the disadvantage of damaging other main frame bodies is avoided. There is.

[Fuel tank support structure]
As shown in FIG. 6, a state in which the storage hopper 43 and the threshing device 4 are in the middle position in the left-right direction of the machine and protrude to the rear side of the machine, and protrude to the rear side from the rear end of the storage hopper 43. The fuel tank 75 is provided. The fuel tank 75 has a rectangular shape that is wide in the front-rear direction and narrow in the left-right direction in the plan view, and is narrow in the left-right direction and wide in the up-down direction in the front-rear direction of the aircraft. It is configured. As described above, the shape is compact in the left-right direction, and while it can be deployed using a narrow area between the threshing device 4 and the grain storage unit 5, a large fuel storage capacity can be secured.

The fuel tank 75 is supported by the rear end portion of the airframe frame K and the rear frame 65. As shown in FIG. 6, the fuel tank 75 is located between the side wall 4A on the right side of the threshing device 4 and the support column 54 on the left side of the hopper support frame 45, and is located at the rear side portion of the machine frame K and the rear frame 65. Of these, the balance weight 70 is placed and supported over the left side portion excluding the portion where the balance weight 70 is attached.

The fuel tank 75 projects rearward from the rear end portion of the storage hopper 43, but as shown in FIGS. 2 and 5, the fuel tank 75 retreats to the front side of the rear end portion of the rear frame 65. It is equipped with. Moreover, since the balance weight 70 protrudes rearward from the rear end portion of the rear frame 65, even if an obstacle exists when the aircraft moves backward, the balance weight 70 comes first at the location where the balance weight 70 exists. Since the rear frame 65 hits the obstacle first in the place where the balance weight 70 does not exist, it is possible to prevent the obstacle from coming into contact with the fuel tank 75.

[Another Embodiment]
(1) In the above embodiment, the rear frame 65 includes left and right front and rear facing frame bodies 66 and sideways frame bodies 67 provided over the left and right front and rear facing frame bodies 66, and the sideways frame body 67 is front and rear. The weight mounting portion 71 is provided on the sideways frame body 67 located on the rearmost side, and the weight mounting portion 71 is provided. Instead of this configuration, the following configuration may be used. That is, three or more sideways frame bodies 67 may be provided in a state of being lined up in the front-rear direction, and the weight attachment portion 71 may be provided in the sideways frame body 67 located on the rearmost side among them, or a plurality of sideways directions arranged in the front-rear direction The weight attachment portion 71 may be provided on two or more of the frame bodies 67. Further, the configuration may be such that only one lateral frame body 67 is provided.

(2) In the above embodiment, the rear frame 65 is formed in a solid state by a hollow outer frame member 68 and a weight member 69 filled in the hollow inside of the outer frame member 68. However, instead of this configuration, the rear frame 65 may be configured in a solid state by an integral body, or instead of the solid state, the rear frame 65 may be configured in a hollow shape.

( 3 ) In the above embodiment, the fuel tank 75 is arranged over the rear end portion of the airframe frame K and the rear frame 65, but the fuel tank 75 may be arranged at a different position.

( 4 ) In the above embodiment, the grain storage unit 5 as a working unit is configured to include a storage hopper 43, but the grain storage unit 5 may be configured to include a grain tank. Further, instead of the ordinary type combine, it may be a self-removing type combine that threshs while transporting the culm by a feed chain.

The present invention can be applied to a combine in which working parts such as a threshing device and a grain storage part are mounted and supported on an airframe frame.

4, 5 Work part 33 Track frame 64 Support frame 65 Rear frame 66 Front and rear facing frame body 67 Sideways frame body
68 Outer frame member 69 Weight member 70 Balance weight 71 Weight mounting part 75 Fuel tank K Airframe frame

Claims (6)

At the rear end of the machine frame on which the working part is mounted and supported, the rear frame is continuously provided so as to project rearward from the machine frame.
Wherein the rear frame, the weight mounting portion can be attached balance weights provided et al is,
A front-rear support frame for supporting the truck frame for the traveling device is provided under the airframe frame.
The support frame extends to a position below the rear frame.
The rear frame is a combine that is mounted and supported on the support frame . The rear frame includes left and right front-rear frame bodies extending rearward from the rear end portion of the machine body frame, and lateral frame bodies provided over the left and right front-rear frame bodies. The combine according to claim 1. A plurality of the sideways frame bodies are provided in a state of being lined up in the front-rear direction.
The combine according to claim 2, wherein the weight mounting portion is provided on the lateral frame body located on the rearmost side of the plurality of horizontal frame bodies. The combine according to claim 2 or 3, wherein the horizontal frame body is formed in a solid state. The combine according to claim 4, wherein the lateral frame body is composed of a hollow outer frame member and a weight member filled in the hollow inside of the outer frame member. A fuel tank is arranged across the rear end of the fuselage frame and the rear frame.
The combine according to any one of claims 1 to 5 , wherein the fuel tank is supported by a rear end portion of the airframe frame and the rear frame.

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