JP2000201521A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester capable of reaping culms on a field at a reaping speed optimum for the working condition to improve the reaping efficiency independently of whether the culm is in standing posture or lodged in various directions by making the reaping speed of the reaping part to be variable, and provided with a speed-changing part positioned at a place suitable for further improving the reaping work efficiency. SOLUTION: A reaping part 2 is placed in front of an undercarriage 12 having a traveling device 1, a threshing part 3 and a grain-storage tank 4 are laterally placed at the back of the reaping part 2, a left-side operation panel 7 having a speed changing lever 6 is placed at the left side of a seat 5 placed in front of the tank 4, a front-side operation panel 9 having an operation lever 8 at the right edge is placed at the front side part of the seat 5 and a reaping speed changing switch 41 for varying the reaping speed of the reaping part 2 according to the standing posture of the culm is placed at the top of the speed changing lever 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for cutting and threshing rice, for example, in a field while moving an airframe.

[0002]

2. Description of the Related Art Some culms in a field are in a standing posture, but some are laid down in front, back, left and right. Grain stalks can be cut at a high speed, and the efficiency of the harvest operation can be increased.

[0003]

However, depending on the location of the means for shifting the mowing part, the efficiency of the harvesting operation can be further improved. Therefore, it is important where the installation location is provided.

[0004]

SUMMARY OF THE INVENTION The present invention is to provide a combine for solving such a problem, and has taken the following technical means. That is, the traveling device 1
The cutting unit 2 is provided at the front of the undercarriage 12 equipped with a threshing unit 3, the threshing unit 3 and the tank 4 for storing the grains are arranged side by side in the lateral direction behind the cutting unit 2, and provided in front of the tank 4. A left operation panel 7 having a gearshift lever 6 is provided on the left lateral side of the seat 5, and a front operation panel 9 having an operation lever 8 is provided on the front side of the seat 5 at the right end, and the gearshift lever 6 is provided. A cutting speed change switch 4 for changing the cutting speed of the cutting unit 2 at the upper end of the cutting gear
1 is a combine.

[0005]

The driver drives the rotating parts of the fuselage with the seat 5 of the driving section, operates the shift lever 6, the operation lever 8 and the like to move the fuselage forward and start the work. Then, the rice that has been cut and transported rearward in the cutting unit is threshed in the threshing unit 3, and the hulled paddy is sent from the threshing unit 3 to the tank 4 and then discharged outside the machine.

At the time of this mowing, the operator can change the mowing speed of the mowing section 2 by operating the mowing speed change switch K provided at the upper end of the speed change lever 6.

[0007]

[Effect] The operator operates the speed change lever 6 while the reaping unit 2 is operating.
The harvesting speed can be changed, so that the harvesting operation can be performed at a speed suitable for the posture of the grain stalk, and the efficiency of the harvesting operation can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the drawings. First, the structure will be described. The combine 11 is moved up and down by a hydraulic elevating means on the front of a chassis 12 provided with a traveling device 1 arranged at predetermined intervals in the left-right direction in the forward direction of the body. The mowing unit 2 is freely provided, the threshing unit 3 is provided on the left side of the undercarriage 12 behind the mowing unit 2, the tank 4 is provided on the right side of the threshing unit 3, and the space between the tank 4 and the mowing unit 2 is provided. An operation unit 10 surrounded by a cabin 14 having an air conditioner 13 is provided in a space portion of.

Although the traveling device 1 is a crawler type, the cutting unit 2 may be constituted by wheels or a combination of wheels and a crawler.
And a plurality of raising devices 17 having a plurality of raising lugs 16 that move obliquely rearward and upward in the lateral direction, a clipper-type cutting device 18, and a harvested grain culm transport device that transports the harvested grain culm upward and rearward. 19 are integrally formed. In addition, a transmission (which may be stepped or stepless, and a bell-con is used in this embodiment, but may be an HST) 39 is provided as a drive unit to the mowing unit 2.

The threshing unit 3 has, on one side, an automatic grain culm feeding device 20 that rotates in the direction of movement of the machine body. This is a self-removing type configuration in which the tip is fed into a handling room to thresh. The tank 4 is a hollow tank having a lower spiral (not shown) at the bottom, and temporarily accommodates the grains transported upward by the graining device (not shown) of the threshing unit 3 and temporarily stores the grains. It is provided rotatably on the side. The lower spiral transporting end portion communicates with the lower end portion of the vertical fryer 21 whose axis is positioned vertically behind the tank 4, and the upper end of the vertical fryer 21 has an outlet. Communicates with a discharge auger 22 that rotates vertically and horizontally.

The cabin 14 is provided with windows 24 each having a transparent plate at the front part and the side part of the frame 23 which is framed, and is detachably attached to the body frame 25. Further, a door 27 is provided on the right side of the cabin 14, the rear part of which is attached to be openable and closable via a turning tool (for example, a butterfly board) 26. Reference numeral 31 denotes a condenser of the air conditioner 13 which is detachably provided on the upper surface of the handling drum cover 32 of the threshing unit 3.

The driving unit 10 has a seat 5 and a left operation panel 7 integrally provided above the seat 5 on the left side of the seat 5 having the backrest 34 in the forward direction of the fuselage. A left-side operation wall 30 is erected on the front side thereof, and a front-side operation wall 29 is erected on the front side thereof.
0 and the front operation wall 29 are arranged in an L-shape. And
A core formed by the left operation wall 30 and the front operation wall 29
At the front end of the left operation panel 7 in the corner portion, an instrument panel 33 is provided diagonally so as to face the seat 5 with the inside lower and the outside (corner side) higher.

The instrument panel 33 has a fuel gauge 33a for displaying the amount of fuel, a turn signal pilot 33b for displaying the blinking of the turn signal, an engine tachometer 33c for displaying the engine speed, and an awame for displaying the operating time. -Ta33
d, Multi-eye 33e for displaying the operating status of the combine (engine operating status, cutting section threshing section clogging alarm, automatic device abnormality display, operation switch switching display, paddy tank level display, vehicle body horizontal operation status display) and posture of grain culm Has a cutting synchro indicator 33f for displaying the cutting speed from standard to lodging.

A shift lever (HS) is provided on the left operation panel 7.
T lever) 6, a sub-transmission lever, a mowing / threshing clutch lever 36, a throttle lever 37, and the like. A finger-operable cutting speed lever 42 is projected forward from the front of the grip portion 40 of the speed changing lever 6, and the cutting speed lever 42 is moved forward.
By rotating 42 in the front-rear direction, any of the mowing speed change switches 41 (a, b, c...) Can be turned on.

The transmission 39 is provided at an intermediate portion of a transmission mechanism from the engine, which is a driving source, to the mowing unit 2, and includes a transmission pulley 43 for transmitting rotational power, and a mowing unit 2 for transmitting rotational power.
An input pulley 44 which is a driving source for each of the rotating parts and whose transmission diameter can be changed in size depending on the level of a pressing force applied to an endless belt 45, which will be described later, and an endless belt 45 wound around the pulleys 43 and 44. And a tension device 47 which can be rotated by driving a forward / reversely rotatable motor 46 to change the pressing force applied to the endless belt 45.

When the mowing gear lever 42 is in the "standard" position, the CPU of the microcomputer (not shown)
48 to the motor 46 via an output interface.
This is the standard number of revolutions set in advance without outputting a drive command signal. When the reaper speed change lever 42 is rotated in the front-rear direction and the reaper speed change switch 41a is turned on, the CPU 48 which has fetched this information via the input interface.
Sends a drive command signal to the motor 46 via the output interface to start the output simulator 46. In this connection, since the tension device 47 rotates to a predetermined position to increase the pressing force on the endless belt 45, the input pulley 44 is slightly reduced, and the cutting speed of the cutting unit 2 is increased.

When the cutting speed change switch 41b is selected to be turned on, the same operation as described above is performed, and the tension device 47 is further rotated to increase the pressing force on the endless belt 45. Reference numeral 44 further reduces the cutting speed of the cutting unit 2. Hereinafter, the same operation is performed when the cutting speed change switches 41c are selected, and the cutting speed is increased. Note that, for example, when the cutting speed change switch 41c is switched from 41c to 41a, the operation reverse to the above is performed to reduce the cutting speed.

The front operation wall 29 has a front operation panel 9 on its upper part.
Is provided so that the driver can remove the front operation wall 29 from the front operation wall 29.
Between the vehicle and the seat 5 and get on and off from the right side, a buzzer stop switch, a display changeover switch, a work light switch, etc. are provided, and a turn signal, a horn switch, a key switch, etc. are provided in an intermediate portion, Operation lever 8 at right end
Is provided.

When the operating lever 8 is tilted back and forth, the reaper 2
When the aircraft is moved up and down and tilted to the left and right, the traveling direction of the aircraft is changed. The operation for switching between the elevating and descending and the changing of the traveling direction is performed. Are provided with button switches S1, S2, S3, S4 that can be operated by fingers at intervals. The switch which is turned on and off by tilting the operation lever 8 may be a contact type such as a limit switch, a non-contact type such as a photoelectric switch, a potentiometer or a differential transformer. The actuator is actuated by a command signal from the CPU 48, and the direction of movement of the machine body is changed by raising and lowering the reaping unit 2 by expansion and contraction of a hydraulic cylinder and the like, and by turning on and off the steering clutch and brake.

Among the vertically arranged button switches,
By pressing S3 with a finger, the reaper 2 is raised by the actuator, and by pressing S4 with a finger, the reaper 2 is lowered by the actuator. The switches S3, S4
Is turned on, the CPU 48 outputs an operation signal for a predetermined time, and the reaper 2 is automatically adjusted to a predetermined height.

FIG. 7 shows a drain hydraulic circuit for a hydrostatic transmission (hereinafter referred to as [HST]), which is provided with a bypass circuit for cutting a flow path to an oil cooler by drain pressure. If the HST drain circuit is too high, it will have a bad effect on each part of the HST (particularly the seal part) and the piping system.
As this type, for example, a configuration in which a bypass circuit is provided by a thermostat depending on the temperature of oil has been considered, but the performance is not sufficient.

However, by the above means, the allowable pressure is set, and if the pressure is equal to or higher than the allowable pressure, a bypass circuit is passed to prevent pressure loss (increase in circuit pressure) due to the oil cooler. At low temperatures, it is highly possible that the pressure will rise and the allowable pressure will be exceeded, but as the hot water temperature rises, the pressure will also drop and oil will flow through the circuit to the oil cooler. I will not invite you.

Reference numeral 49 denotes a direction sensor (hereinafter, referred to as an "ACD sensor") provided near the herbaceous body 15, which sends direction correction information when it comes into contact with a grain culm in a field. The CPU 48, which has taken this in via the input interface, outputs a drive command signal to the solenoids 50, 51 via the output interface, disengages the left or right steering clutch and automatically changes the traveling direction to the left or right. This is the configuration to be corrected.

By pressing the S1 with a finger among the button switches arranged in the lateral direction of the grip portion 38, the steering clutch is disengaged and the traveling direction of the body is gently turned left (slow left turn), and S2 By pushing with a finger, the steering clutch is disengaged and the traveling direction of the aircraft is gently turned right (slow right turning). When the button switches S1 and S2 are continuously turned on over a preset time, the input signals of the button switches S1 and S2 are ignored for a certain time for cooling the solenoids 50 and 51. Therefore, burning of the solenoids 50 and 51 can be prevented.

When the button switches S1 and S2 are turned on, the CPU 48 sends a command to the solenoids 5 and 51.
The output command signal may be configured to output a pulse that is longer for a certain period of time from the start of output, and then shorter or gradually shortened. Next, the operation will be described.
First, the driver opens and closes the door 27 of the cabin 14, sits on the seat 5, depresses the parking brake pedal, and presses the key.
When the engine is turned on and the engine is started, the power output from the engine is transmitted to the rotating parts of the body via the transmission mechanism.

Then, the throttle lever 37 is rotated to select the engine at a predetermined speed, and the sub-speed lever is selected.
When the user rotates the thruster 35 forward and selects, for example, the standard, and further operates the reaping / threshing clutch lever 36 to drive the threshing unit 3 and the reaping unit 2, the mechanical conditions and the like are displayed on the respective indicators on the instrument panel 33. Is displayed. Thereafter, when preparations for harvesting work are completed, the depressing of the parking brake pedal is released, and subsequently, the gearshift lever 6 is rotated forward to move the machine forward, and the operating lever 8 is tilted forward and backward to cut. The position of the section 2 is determined, or the tilting body 15 is tilted to the left and right to change the traveling direction of the aircraft, and the weeding body 15 is adjusted to a predetermined distance. Then, the root portion of the cereal stem caused by the raising rug 16 moving diagonally rearward and upward along the raising case is moved to the cutting device 1.
The stalks are cut by the cutter 8 and transferred to the harvested grain culm transfer device 19 to be transferred rearward and upward.

The cereal culm that has reached the transport end is sandwiched by the automatic cereal culm feeding device 20 and conveyed backward, sent to a culm processing device such as a cutter for processing.
The ears of the culm are fed into the handling room and threshed. Processed products such as grains generated by this are subjected to wind selection to be separated into grains and straw chips, and the grains are sent to the tank 4 by the transport device and stored therein. Thereafter, when the kernels in the tank are full, the driver interrupts the harvesting operation and performs the operation of discharging the kernels. Is discharged outside the machine, so that it may be transferred to a truck such as a truck.

In such a harvesting operation, for example, when the lodging of the cereal stalk is large, it is necessary to match the weeds 15 located on the leftmost side of the uncut stalk with the streak, but it is operated with the right hand. Button switch S on top of grip 38
By the finger operation of S1, S2, S3, and S4, the steering clutch is turned on and off, and the machine body moves straight ahead and slowly turns left and right and turns the reaper 2 up and down to various specified positions. Therefore, in harvesting work, stepping down of the grain stalk can be prevented, and operability can be improved.

Further, depending on the state of the standing posture of the grain stalk, the operator moves the gearshift lever 6 back and forth to select a suitable vehicle speed, and furthermore, the mowing gearshift lever provided on the grip portion 40 of the gearshift lever 6. -42 is operated by a finger to rotate up and down or back and forth, and one of the cutting speed change switches 41 is turned on. Then, the CPU 48 which has fetched this information via the input interface, modulates via the output interface.
A driving command signal is output to the motor 46 and the simulator 46 is started.
In this connection, since the tension device 47 rotates to a predetermined position to increase the pressing force on the endless belt 45, the input pulley 44 is slightly reduced, and the cutting speed of the cutting unit 2 is increased.

Therefore, the harvesting operation can be performed at a vehicle speed and a cutting speed suitable for the standing posture of the grain culm. Since the selected harvesting speed is displayed on the indicator 33f, the operator can know the shift state, and can prevent forgetting to set the harvesting speed or mistakes.

Further, the speed of the reaper 2 can be easily changed by operating the reaper speed change lever 42.
The shifting operation of the reaping unit 2 can be performed without erroneous operation while changing the vehicle speed by the transmission lever 6 or holding the transmission lever 6.

[Brief description of the drawings]

FIG. 1 is a front view of a combine.

FIG. 2 is a side view of the combine.

FIG. 3 is a side view of a partially cut combine.

FIG. 4 is a plan view of a driving unit.

FIG. 5 is a plan view of an instrument panel.

FIG. 6 is a plan view of an operation lever.

FIG. 7 is a hydraulic circuit.

FIG. 8 is a pulse output signal diagram in the direction control of the aircraft.

FIG. 9 is a block circuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling device 2 Cutting part 3 Threshing part 4 Tank 5 Seat 6 Shift lever 7 Left operation panel 8 Operation lever 9 Front operation panel 12 Chassis 41 Cutting shift switch

Claims (1)

[Claims] 1. A cutting section 2 is provided at a front portion of a chassis 12 provided with a traveling device 1, and a threshing section 3 and a tank 4 for storing grains are arranged side by side in a lateral direction behind the cutting section 2. A left operating panel 7 having a gearshift lever 6 is provided on the left lateral side of a seat 5 provided in front of the tank 4, and a front operating panel 9 having an operating lever 8 on the right end is provided on the front side of the seat 5. Is established,
A combine having a cutting speed change switch 41 for changing the cutting speed of the cutting unit 2 at the upper end of the speed change lever 6.