JP2004135589A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester facilitating improving operation efficiency and simplifying handling operation, or the like. <P>SOLUTION: This combine harvester has the following structure and mechanism: A threshing section 6 and a grain tank 18 are mounted on a machine base 5, grains in the grain tank 18 are unloaded out of the machine by the action of an unloading auger 20, left and right track frames 1 and 2 are liftably set via left and right rolling cylinders 35 under the machine base 5 and equipped with left and right traveling crawlers 3 and 4, respectively, and the rolling cylinders 35 are automatically controlled based on the detection result given by a tilt sensor 59 functioning to detect the lateral inclination of the machine base 5; and the movement of the unloading auger 18 from a main machine housing position is detected, the automatic control of the rolling cylinders 35 based on the detection result from the tilt sensor 59 is put to a halt, and a waiting action is automatically made to lowering the rolling cylinders 35 so that a vehicle height at a set ratio is realized based on a vehicle height at the halt. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a combine for supporting a traveling crawler on both right and left sides of a machine so that a supporting height can be adjusted freely.
[0002]
[Prior art]
Conventionally, a threshing unit and a grain tank are mounted on the top of the machine base, and the grains in the grain tank are carried out of the machine by a discharge auger, and the left and right track frames can be moved up and down through the left and right rolling cylinders below the machine base. There is a technology in which a right and left traveling crawler is mounted on a left and right track frame, and a rolling cylinder is automatically controlled based on a detection result of a tilt sensor for detecting a left and right tilt of the machine base. Further, as disclosed in Japanese Patent Application Laid-Open No. 4-131509, when the discharge auger leaves the storage section of the machine, the automatic control of the rolling cylinder is stopped and the discharge auger collides. Also, there is a technology that can eliminate a problem such as forgetting to turn on or off an automatic switch. (For example, see Patent Document 2)
[0003]
[Patent Document 1] Japanese Patent No. 3283230 [Patent Document 2] Japanese Patent Application Laid-Open No. Hei 4-131509
[Problems to be solved by the invention]
However, when the automatic switch for performing the automatic control of the rolling cylinder is turned off, the conventional technology (Patent Document 1) makes the left and right traveling crawlers parallel to the machine base, thereby performing stable traveling on the road. Because, for example, during the harvesting work, during the harvesting work, the grain is filled in the grain tank, and when the grain is moved to the ridge and the grain is carried out to the truck bed, the automatic control of the rolling cylinder is performed. Yes, for example, when the discharge auger is extended to the upper surface side of the truck bed or the container, if the rolling cylinder is automatically controlled, the discharge auger collides with the upper opening edge of the truck bed or the container. At the same time, the problem can be eliminated by turning off the automatic switch. Erroneous operation there is a handling operation on issues such as where there is easy problem to Okoshisei a.
[0005]
Furthermore, the conventional technique (Patent Literature 2) discloses that when the discharge auger is moved out of the machine in the middle of moving to a place where the grain is carried out, or before the discharge auger is stored in the machine, it is moved to the next harvesting place. When the aircraft is tilted to the left and right and runs unstable, there is a problem that the discharged auger is moved out of the machine after moving to the grain discharge location, or the next harvest after storing the discharged auger in the machine. There is a problem in handling operation such that it is necessary to move to a place, and it is not easy to improve work efficiency.
[0006]
[Means for Solving the Problems]
According to the present invention, a threshing unit and a grain tank are mounted on the upper surface of the machine, and the grains in the grain tank are carried out of the machine by a discharge auger. The right and left track frames can be moved up and down freely via the, the left and right track frames are equipped with left and right running crawlers, and the combine machine that automatically controls the rolling cylinder based on the detection result of the tilt sensor that detects the left and right tilt of the machine The movement of the discharge auger from the storage position is detected, the automatic control of the left and right rolling cylinders based on the detection result of the inclination sensor is stopped, and the vehicle height of the ratio set based on the vehicle height at the time of the stop is obtained. In this way, the standby operation for lowering the rolling cylinder is performed automatically. The auger can be moved off-board before reaching the grain discharge location, since the grain tank is kept at a height suitable for transfer to the grain discharge location or the next harvest location, and Before storing the discharged auger, it can be moved to the next harvesting place, and the operation efficiency can be improved and the handling operation can be simplified.
[0007]
Further, according to claim 2, the standby operation is automatically performed so that the vehicle heights of the left and right traveling crawlers are substantially the same based on the vehicle height of one of the left and right traveling crawlers. By lowering the vehicle height based on the lower vehicle height when stable traveling can be performed, etc., it is possible to perform more stable traveling and improve mobility, but, for example, the sinking amount of the traveling crawler in wetlands etc. is large. By lowering the vehicle height based on the higher vehicle height at the time of traversing or crossing a ridge, it is possible to eliminate problems such as the machine side entering into mud and improve handling operability. .
[0008]
Further, as in claim 3, the ratio of lowering the left rolling cylinder and the ratio of lowering the right rolling cylinder are substantially the same, and the standby operation is automatically performed. When the vehicle is heavier, the overall vehicle height is lowered while maintaining the difference in vehicle height between the left and right traveling crawlers. It can improve the properties and the like.
[0009]
Further, the ratio of lowering the left rolling cylinder and the ratio of lowering the right rolling cylinder are made different from each other so that the waiting operation is automatically performed. Even if the automatic control of the inclination sensor is stopped, for example, while the vehicle height of the left and right traveling crawlers can be kept substantially equal, for example, the presence or absence of grains in the grain tank, or the on / off of the threshing unit, the aircraft attitude properly The vehicle height can be reduced while maintaining the vehicle height.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is an overall side view of the combine, FIG. 2 is a plan view thereof, FIG. 3 is a side view of a track frame portion, and FIG. 4 is a plan view of the same. Left and right track frames, 5 is a machine frame installed on the track frames 1 and 2, 6 is a threshing unit in which a feed chain 7 is stretched to the left and a handling cylinder 8 and a processing cylinder 9 are built in, and 10 is a cutting blade 11. And a cutting unit 13 including a grain culm transport mechanism 12, a hydraulic cutting and lifting cylinder 13 for raising and lowering the cutting unit 10 around a cutting fulcrum shaft 15 via a cutting frame 14, and a straw cutter 17 for facing the end of a straw chain 17. , 18 is a grain tank for bringing in the grains from the threshing unit 6 through a fryer cylinder 19, 20 is a discharge tank for carrying out the grains of the tank 18 out of the machine, 21 is an operation operation unit such as a steering wheel. Driving key having a driver seat 22 and a driver seat 23 Bottles, 24 is an engine provided with the operating cabin 21 downward and configured to threshing continuously harvests culms.
[0011]
Further, as shown in FIGS. 3 to 5, a pair of left and right main unit frames 25 and 26 are fixed to the lower surface of the machine base 5 having a rectangular frame shape in plan view, and the lower surfaces of the left and right main unit frames 25 and 26 extend in the front-rear direction. And a pair of left and right bearings 28 are fixed to the lower surfaces of both ends of the horizontal frame 27 formed to be longer than the left and right widths of the left and right machine frames 25 and 26, and a pair of front and rear fulcrum shafts are fixed. The two ends of the 29 and 30 are fixed to a bearing body 28, and the left and right pair of left and right L-shaped swing arms 31 and 32 having the same shape in the front and rear sides are rotatably supported on both ends of the fulcrum shaft 29 and 30, and the track is provided. One rear ends of the swing arms 31 and 32 are rotatably connected to a shaft 33 fixed to the frames 1 and 2, and the other upper ends of the front and rear swing arms 31 and 32 are connected to both ends of a connecting member 34 extending in the front and rear direction. And the middle of the connecting member 34 is connected to the machine base 5 by a hydraulic vehicle height cylinder 35, and the left and right track frames 1 and 2 can be individually raised and lowered with respect to the machine base 5 via a pair of right and left swing arms 31 and 32. Attach to The base plate 36 is fixed to the upper surfaces of the fulcrum shafts 29 and 30 and connected to the lower surface of the horizontal frame 27.
[0012]
Further, a driving sprocket 39 is mounted on a transmission case 37 on the front side of the machine frame 5 via left and right shaft cases 38, and a plurality of track rollers 40, equalizer rollers 41, and tension rollers 42 are mounted on outer surfaces of the track frames 1 and 2. A carrier roller 43 attached to the machine frames 25 and 26; and a crawler detachment preventive body 44 attached to the track frames 1.2 to prevent the traveling crawlers 3.4 from coming off the track rollers 40. 2, the traveling crawlers 3 and 4 are stretched on the vehicle cradle 2, and the height of the track frames 1 and 2 is raised and lowered by the vehicle height cylinder 35 to change the ground contact surface height of the traveling crawlers 3 and 4 with respect to the gantry 5, and The rolling control is performed by adjusting the height of the vehicle.
[0013]
Further, the connecting member 34 is formed by fixing the cylinder receiving plate 47 to the rear end of the telescopic adjusting rod 46 with the turnbuckle 45, and the rod 46 and the cylinder receiving plate 47 are attached to the upper and lower swing arms 31 The vehicle height cylinder 35 is attached via a shaft to a bracket 51 fixed to the back of the horizontal frame 50 of the machine base 5 and the tip of the piston 53 of the vehicle height cylinder 35 is connected to the cylinder receiving plate 47 via a shaft. Connected through.
[0014]
Further, the bearing base 55 is fixed to both ends of the front horizontal frame 27, the shaft case 38 is fixed to the bearing base 55, the sprocket 38 is provided, and the tension support shaft 56 is fixed to the rear portions of the track frames 1 and 2. The tension roller 42 is provided on the support shaft 56 via a tension adjusting bolt 57 and a telescopic shaft body 58, and the front and rear swing arms 31 and 32 are swung around the fulcrum shafts 29 and 30 by the vehicle height cylinder 35. The trucks 41 and 42 and the track frames 1 and 2 are integrally lifted and lowered, and the grounding side of the traveling crawlers 3 and 4 is raised and lowered while the front and rear contact width of the traveling crawlers 3 and 4 is maintained substantially constant. The left and right vehicle height cylinders 35 are individually operated by automatic control based on the detection result of the tilt sensor 59 for detecting the left and right tilting of the table 5, and the left and right traveling crawlers are operated. · 4 by changing the ground height is adapted to substantially horizontally support the machine frame 5.
[0015]
Further, a fryer cylinder 19 is erected on the outer side of the rear part of the grain tank 18 and the upper left part of the tank 18 is protruded above the threshing unit 6 disposed adjacent to the left side. The lower end is connected to the first conveyor 60, and the grains threshed in the threshing unit 6 are charged into the tank 18 through the inlet at the upper part of the graining cylinder 19 at the rear of the grain tank 18 and stored therein. The vertical auger 62 is interposed between the horizontal auger 61 and the upper discharge auger 20, and the grains in the grain tank 18 are taken out through the vertical auger 62 and the discharge auger 20. A tank sensor 66 including upper, middle, and lower switches 63, 64, and 65 is provided at upper, middle, and lower positions in the grain tank 15, and when the switches 44, 45, and 46 are turned on, the inside of the tank 15 is turned on. It is configured to detect the presence or absence of a grain.
[0016]
Further, as shown in FIGS. 1 and 7, a vertical auger 62 is erected on the rear side of the grain tank 18, and a base end of the discharge auger 20 is connected to an upper end of the vertical auger 62 via a transfer case 67. The intermediate portion of the discharge auger 20 is placed on the auger rest 68 on the upper side of the tank 18 and supported thereon, and as shown in FIG. 2, the discharge auger 20 is stored substantially diagonally on the upper surface of the machine. An electric turning motor 69 for turning the tip of the discharge auger 20 around the vertical auger 62 as a fulcrum, an electromagnetic solenoid type turning brake 70, and a potentiometer type turning sensor 71 are provided at the discharging position or the auger rest 68 position. A hydraulic auger elevating cylinder 72 for raising and lowering the tip side of the discharge auger 20 and a potentiometer type elevating sensor 73 are provided. With elevating the discharge auger 20 leading end side by the elevating cylinder 72 control, and configured to swirl discharge auger 20 leading end side in the left and right by the swing motor 69 control.
[0017]
Further, as shown in FIG. 8, the left vehicle height cylinder 35 is hydraulically connected to a hydraulic pump 77 via an electromagnetic left valve 76 having a left ascending solenoid 74 and a left descending solenoid 75, and a right ascending solenoid 78 and a right descending solenoid. The right vehicle height cylinder 35 is hydraulically connected to a hydraulic pump 77 via an electromagnetic right valve 80 having a solenoid 79, and the auger elevating cylinder 72 is hydraulically pumped via an electromagnetic elevating valve 83 having an ascending solenoid 81 and a descending solenoid 82. A hydraulic connection is made to 77 and the cylinders 35 and 72 are operated.
[0018]
Further, as shown in FIG. 9, a threshing switch 84 that is turned on by the driving operation of the threshing unit 6, an automatic switch 85 that performs automatic control of the vehicle height cylinder 35 based on the detection result of the inclination sensor 59, Left and right vehicle height sensors 86 and 87 for detecting the heights of the right and left traveling crawlers 3 and 4 with respect to the ground, a vehicle height switch 88 for manually moving the left and right vehicle height cylinders 35 up and down, and operating the left and right vehicle height cylinders 35 Then, the tilt dial 89 for manually adjusting the horizontal tilt of the machine base 5, the tilt sensor 59, and the solenoids 74, 75, 78, 79 are electrically connected to the tilt controller 90.
[0019]
A cutting switch 91 that is turned on by the driving operation of the cutting unit 10, a lifting switch 92 that moves the discharge auger 20 up and down, a rotation switch 93 that rotates the discharge auger 20, and the rotation sensor 71 The sensor 73, the turning motor 69, and the solenoids 81 and 82 are electrically connected to a work controller 94, and the tilt controller 90 and the work controller 94 are connected by communication.
[0020]
Then, as shown in the flowchart of FIG. 10, when the automatic switch 85 and the threshing switch 84 are turned on, the inclination sensor 59 inputs the left-right inclination of the machine base 5 and the discharge auger 20 is not raised or turned. When the discharge auger 20 is stored in the auger rest 68, the vehicle height cylinder 35 is controlled so as to determine leftward or rightward tilt based on the input of the tilt sensor 59, and to raise or lower leftward when the machine base 5 is tilted leftward. On the other hand, when the machine base 5 is tilted to the right, the vehicle height cylinder 35 is controlled so that the machine base 5 is moved leftward or rightward to make the machine base 5 substantially horizontal. In addition, while the vehicle height cylinder 35 is manually operated by operating the vehicle height switch 88 to change the vehicle height, the vehicle height cylinder 35 is manually operated by operating the tilt dial 89 to tilt the machine base 5. Let it do.
[0021]
Further, when the threshing switch 84 is turned off, or when the discharge auger 20 is raised or turned and moved from the storage position of the auger rest 68, the switches 63 to 65 are input from the tank sensor 66, and the left and right vehicle heights are adjusted. The lowering width is calculated, and control for operating the vehicle height cylinder 35 to change to the standby vehicle height is automatically performed. Also, as shown in FIGS. 11 and 12, when the grains are collected in the grain tank 18 by the harvesting operation, the machine center of gravity moves to the tank 18 installation side due to the grain weight of the tank 18, so that the left and right traveling crawlers 3 and 4 are moved. When the road surface hardness of the traveling crawler 3 and 4 is substantially equal on the left and right, the vehicle height, which is the distance between the ground surface of the traveling crawlers 3 and 4 and the machine base 5 differs on the left and right, and the right vehicle height on the tank 18 installation side (for example, 90% of the control range) is higher than the left vehicle height (for example, 70% of the control range) on the threshing unit 6 side, and based on the left vehicle height A, which is less changed by the amount of grains in the tank 18, the truck The left vehicle height cylinder 35 is controlled to lower to a standby vehicle height B of 14%, which is lowered by 80%, so that the frames 1 and 2 and the like are at a position higher than the lower limit at which the vehicle easily enters the mud.
[0022]
At about the same time as the lowering of the left vehicle height cylinder 35 to the standby vehicle height B, the right vehicle height cylinder 35 is adjusted so that the right vehicle height C on the tank 18 side becomes substantially the same as the left vehicle height D on the left side. By controlling the descent, the standby vehicle heights BD of the left and right traveling crawlers 3 and 4 can be made substantially equal at a position higher than the lower limit as shown by the solid line. For example, the harvesting place in the center of the field, the truck bed or the container Move the crawlers 3 and 4 forward and backward at the grain discharge location to move the grains uniformly to the front and back of the container. The left vehicle height cylinder 35 and the right vehicle height cylinder 35 are caused to have different descending ratios to change to the standby vehicle height BD, and the standby vehicle height BD of the left and right traveling crawlers 3.4 with respect to the machine base 5 At approximately the same height.
[0023]
On the other hand, as described above, when the left vehicle height cylinder 35 is controlled to be lowered to the standby vehicle height B, the right vehicle height cylinder is moved almost at the same time as the center of gravity of the right and left crawlers 3 and 4 approaches the middle between the left and right vehicles. 35, the standby vehicle height E on the left side becomes higher than the standby vehicle height B on the left side as indicated by the imaginary line, and the ground pressure of the left and right traveling crawlers 3 and 4 can be made substantially equal. It can be moved from a place to a grain discharge place with a stable body posture, and the ratio of the descending operation of the left vehicle height cylinder 35 and the right vehicle height cylinder 35 is made substantially the same, and the standby vehicle heights B and E differing on the left and right. The standby vehicle height E of the right vehicle height cylinder 35 is determined based on the kernel amount detected by each of the switches 63 to 65 of the tank sensor 66, thereby moving from the harvest location to the kernel discharge location. Outbound only Without, in the return path to return to the grain tank 18 to the sky from the grain carry-out location to the next harvest location or can be moved in a stable aircraft attitude.
[0024]
The control mode for making the left and right standby vehicle heights B and D substantially the same and the control mode for making the left and right standby vehicle heights B and E different are selected by a mode changeover switch (not shown). It is possible to make the standby vehicle height suitable for the mud condition of the vehicle.
[0025]
As is apparent from the above, the threshing unit 6 and the grain tank 18 are mounted on the upper surface of the machine 5, the grains of the grain tank 18 are carried out of the machine by the discharge auger 20, and the left and right rolling is performed on the lower side of the machine 5. Left and right track frames 1 and 2 are provided so as to be able to move up and down via a cylinder height cylinder 35, and left and right track frames 1 and 2 are equipped with left and right traveling crawlers 3 and 4. In the combine which automatically controls the vehicle height cylinder 35 based on the detection result of the sensor 59, the movement of the discharge auger 18 from the storage position of the machine is detected, and the automatic movement of the left and right vehicle height cylinder 35 based on the detection result of the inclination sensor 59 is performed. The control is stopped, and the standby operation for lowering the vehicle height cylinder 35 is automatically performed so that the vehicle height reaches a set ratio based on the vehicle height at the time of the stop. I make. When the discharge auger 20 is away from the storage position of the machine, the vehicle is kept at a height suitable for moving the grain from the grain tank 18 to the next harvesting place, or at a place where the grain is discharged. Before reaching, the discharge auger 20 is moved out of the machine, and before storing the discharge auger 20, it is moved to the next harvesting place to improve work efficiency and simplify the handling operation.
[0026]
In addition, a standby operation is automatically performed so that the vehicle heights of the left and right traveling crawlers 3 and 4 are substantially the same based on the vehicle height of one of the right and left traveling crawlers 3 and 4. By lowering the vehicle height based on the lower vehicle height when stable running can be performed, etc., it is possible to perform more stable running and improve mobility, while, for example, the sinking amount of the traveling crawlers 3 and 4 in a wetland etc. When the vehicle is large or over a ridge, the vehicle height is reduced based on the higher vehicle height, thereby eliminating problems such as the machine entering into mud and improving handling operability.
[0027]
In addition, the ratio of lowering the left vehicle height cylinder 35 and the ratio of lowering the right vehicle height cylinder 35 are made substantially the same, and the standby operation is automatically performed. When the weight is heavy, lower the overall vehicle height while keeping the difference in vehicle height between the left and right traveling crawlers 3 and 4, and move the vehicle from the harvesting location to the grain discharge location with a stable body posture, mobility and handling Improve the properties.
[0028]
In addition, the ratio of lowering the left vehicle height cylinder 35 and the ratio of lowering the right vehicle height cylinder 35 are made different from each other so that the standby operation is automatically performed, and the vehicle heights of the left and right traveling crawlers 3 and 4 are different. Even if the automatic control of the inclination sensor 59 is stopped in this state, for example, the vehicle height of the left and right traveling crawlers 3 and 4 is kept substantially equal, and for example, the presence or absence of grains in the grain tank 18 or the on / off of the threshing unit 6 Reduce the vehicle height while maintaining the aircraft attitude properly.
[0029]
Further, the threshing unit 6 and the grain tank 18 are mounted on the upper surface of the machine stand 5, and the grains in the grain tank 18 are carried out of the machine by the discharge auger 20. The left and right track frames 1 and 2 are provided to be able to move up and down via the cylinder 35, the left and right track frames 1 and 2 are equipped with the left and right traveling crawlers 3 and 4, and the detection result of the tilt sensor 59 which detects the left and right tilt of the machine base 5. When the automatic control of the vehicle height cylinder 35 is automatically interrupted while the automatic switch 85 for performing the automatic control of the vehicle height cylinder 35 is turned on in a combine for automatically controlling the vehicle height cylinder 35 based on Then, a standby operation for operating the left and right vehicle height cylinders 35 is automatically performed so that the center of gravity of the vehicle approaches the middle of the right and left traveling crawlers 3 and 4. Even if the automatic control of the vehicle height cylinder 35 is interrupted, the machine body center of gravity is prevented from shifting to the left and right. For example, the discharge auger 20 is moved out of the machine while traveling, or the discharge auger 20 is stored in the machine. To improve work efficiency and simplify handling operations.
[0030]
Further, when the automatic control of the vehicle height cylinder 35 based on the detection result of the inclination sensor 59 is switched from on to off, the height of the right and left traveling crawlers 3.4 with respect to the machine base 5 with respect to the grain amount of the grain tank 18 depends on the ground amount. And the left and right vehicle height cylinders 35 are automatically operated by this determination. Even if the grain in the grain tank 18 is full or empty, the weight change of the grain tank 18 causes the machine center of gravity to shift right and left. Eliminate the problem of leaning, and run in a stable aircraft attitude.
[0031]
【The invention's effect】
As is clear from the above embodiment, the present invention provides the threshing unit 6 and the grain tank 18 on the upper surface of the machine base 5 as described in claim 1, and the grains of the grain tank 18 are carried out of the machine by the discharge auger 20. At the same time, the left and right track frames 1 and 2 are provided on the lower side of the machine base 5 via left and right rolling cylinders 35 so as to be able to move up and down, and the left and right track frames 1 and 2 are provided with the left and right traveling crawlers 3 and 4. In the combine which automatically controls the rolling cylinder 35 based on the detection result of the inclination sensor 59 for detecting the left-right inclination, the movement of the discharge auger 18 from the storage position of the machine is detected, and the left-right rolling based on the detection result of the inclination sensor 59 is performed. The automatic control of the cylinder 35 is stopped, and the rolling cylinder 35 is lowered so that the vehicle height reaches a set ratio based on the vehicle height at the time of the stop. When the discharge auger 20 is away from the storage position of the machine, it is suitable for moving to the place where the grains of the grain tank 18 are carried out or to the next harvesting place. Since the vehicle height is maintained, the discharge auger 20 can be moved out of the machine before reaching the grain discharge location, and can be moved to the next harvesting place before storing the discharge auger 20, thereby improving work efficiency. In addition, the handling operation can be simplified.
[0032]
Further, the waiting operation is automatically performed based on the vehicle height of one of the right and left traveling crawlers 3.4 so that the vehicle heights of the left and right traveling crawlers 3.4 are substantially the same. For example, by lowering the vehicle height based on the lower vehicle height when stable driving can be performed on a dry field etc., it is possible to perform more stable driving and improve mobility, for example, wetland etc. When the amount of settlement of the traveling crawlers 3 and 4 is large, or when crossing a ridge, etc., reduce the vehicle height based on the higher vehicle height to eliminate problems such as the machine side entering into mud. Thus, handling operability can be improved.
[0033]
Further, the ratio of lowering the left rolling cylinder 35 and the ratio of lowering the right rolling cylinder 35 are made substantially the same, and the standby operation is automatically performed. When the vehicle is heavier than the opposite side, the overall vehicle height is lowered while maintaining the difference in vehicle height between the left and right traveling crawlers 3 and 4, so that the vehicle is driven in a stable body posture from the harvest location to the grain discharge location. It is possible to improve mobility and handling.
[0034]
Further, the ratio of lowering the left rolling cylinder 35 and the ratio of lowering the right rolling cylinder 35 are made different from each other so that the standby operation is automatically performed. Even if the automatic control of the inclination sensor 59 is stopped in a state where the vehicle heights are different, for example, the vehicle heights of the left and right traveling crawlers 3 and 4 can be kept substantially equal, while, for example, the presence or absence of grains in the grain tank 18 or the threshing unit 6, the vehicle height can be lowered while maintaining the body attitude properly.
[Brief description of the drawings]
FIG. 1 is a side view of a combine.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of a track frame section.
FIG. 4 is a plan view of the same.
FIG. 5 is a rear view of the same.
FIG. 6 is an explanatory front view of the airframe.
FIG. 7 is an enlarged view of a discharge auger part.
FIG. 8 is a hydraulic circuit diagram.
FIG. 9 is a control circuit diagram.
FIG. 10 is a flowchart.
FIG. 11 is an explanatory diagram of a control operation.
FIG. 12 is an explanatory diagram of a control operation.
[Explanation of symbols]
1.2 Track frame 3.4 Traveling crawler 5 Machine stand 6 Threshing unit 18 Grain tank 20 Discharge auger 35 Height cylinder (rolling cylinder)
59 Tilt sensor

Claims (4)

The threshing unit and the grain tank are mounted on the top of the machine, and the grains in the grain tank are carried out of the machine by the discharge auger, and the left and right track frames are provided on the lower side of the machine via left and right rolling cylinders so as to be able to move up and down, A right and left traveling crawler is mounted on the left and right track frames, and in a combine that automatically controls a rolling cylinder based on a detection result of a tilt sensor that detects a left and right tilt of the machine base, a movement of the discharge auger from the storage position of the machine is detected. The standby operation of stopping the automatic control of the left and right rolling cylinders based on the detection result of the inclination sensor and lowering the rolling cylinder so that the vehicle height reaches a set ratio based on the vehicle height at the time of the stoppage. A combine that is automatically performed. The combine according to claim 1, wherein a standby operation is automatically performed so that the vehicle height of the left and right traveling crawlers is substantially the same based on the vehicle height of one of the left and right traveling crawlers. The combine according to claim 1, wherein the ratio of lowering the left rolling cylinder and the ratio of lowering the right rolling cylinder are substantially the same, and the standby operation is automatically performed. The combine according to claim 1, wherein the ratio of lowering the left rolling cylinder and the ratio of lowering the right rolling cylinder are different from each other, and the standby operation is automatically performed.

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