JPH0659140B2 - Combine with discharge auger - Google Patents

Description

Description: (a) Field of Industrial Application The present invention relates to a combine that is equipped with a threshing device and travels inside farmland to mow crops and harvest grain, and is particularly used for farmlands having a wide working area. Large combine with a discharge auger.

(b) Outline of the invention In summary, the combine provided with the discharge auger according to the present invention is a rotation restriction that restricts the rotation operation of the discharge auger when the discharge auger that rotates and moves up and down is not at the upper position in the vertical direction. By providing the means, the rotation operation is performed only when the discharge auger is positioned on the upper side in the vertical direction, and the collision with the device provided on the upper surface of the combine or the operator is prevented.

(c) Conventional Technology Large combine harvesters, which are generally used in farmland with a large work area, are equipped with a discharge auger that discharges the grain harvested in a tank to the outside. The discharge auger is vertically movable about one end as a fulcrum on the upper surface of the combine and rotatable in a horizontal plane. This discharge auger is stored in a predetermined storage position on the upper surface of the combine during mowing work,
When the grain is discharged, it moves to the discharge position and discharges the grain to the bed of the transportation vehicle. When the discharging work is completed, the discharging auger is moved from the discharging position to the storage position. In order to move the discharge auger in this way, the combine is equipped with a hydraulic device and a motor, and the hydraulic device moves the discharge auger up and down and rotates the motor. In order to operate the hydraulic device and the motor, the conventional combine is equipped with an operating lever and the like, and the operator operates the operating lever to control the operation of the hydraulic device and the motor to move the discharge auger to a predetermined position. I was doing.

(d) Problems to be Solved by the Invention However, in a combine with a conventional discharge auger, the discharge auger can be freely rotated by the operation of the steering lever. When the discharge auger is rotated by operating the steering lever when it is in the position, there is a risk of collision with another device on the upper surface of the combine or an operator seated in the cockpit.

An object of the present invention is to prevent the discharge auger from colliding with other devices or operators during the rotation operation by allowing the discharge auger to rotate only when the discharge auger is in the upper position in the vertical direction. The purpose of the present invention is to provide a combine with a discharge auger that can improve the safety of discharge work.

(e) Means for Solving the Problems The combine with the discharge auger of the present invention comprises a discharge auger that rotates in a horizontal plane with one end as a fulcrum and vertically moves up and down with the one end as a fulcrum. In the combine, the position detecting means for detecting the discharge auger at the upper position in the vertical direction, and the position detecting means for detecting the discharge auger when the rotation operation of the discharge auger is instructed without detecting the discharge auger. It is characterized in that a rotation moving means for rotating the discharge auger after raising the discharge auger until the detection is detected, and a moving speed switching means for lowering the lowering speed of the discharge auger than the rising speed are provided.

(f) Action In the present invention, the position detecting means detects the discharge auger at the upper position in the vertical direction. The rotation moving means rotates the discharge auger after raising it until the position detecting means detects the discharge auger when the rotation operation of the discharge auger is instructed while the position detecting means does not detect the discharge auger. . The moving speed switching means makes the descending speed of the discharge auger lower than the ascending speed.

Since the discharge auger rotates only in the upper position in the vertical direction and does not rotate in the lower position in the vertical direction, the discharge auger does not collide with other devices or operators during the rotating operation. Further, the speed at which the discharge auger descends is made lower than the ascending speed by the descending speed switching means, so that the impact at the time of storing the discharge auger becomes small.

(g) Embodiment FIG. 1 is an external perspective view of a combine equipped with a discharge auger according to an embodiment of the present invention.

The combine 1 travels in the farmland by the rotation of the crawler belt 6.
A mowing unit 2 is attached to the front of the combine 1, and the crops located in front of the combine 1 are cut from the plant base.
The combine 1 guides the crop cut by the cutting unit 2 to a threshing device (not shown) mounted inside the combine 1. The threshing device separates the grain from the grain culm of the crop, and only the grain selected by the sorting device is harvested in the tank 3.
The combine 1 is provided with a discharge auger 4 which is vertically movable and rotatable on a fulcrum 7 on its upper surface. The discharge auger 4 discharges the grain harvested in the tank 3 from the discharge port 4a. The operator sits on the control unit 5 and operates each device.

FIG. 2 is a schematic plan view of the combine.

The position shown in FIG. 2 on the upper surface of the combine 1 is the storage position of the discharge auger 4. The discharge auger 4 rotates from this storage position around the fulcrum 7 in the direction of arrow A or B to a predetermined discharge position. The discharge position of the discharge auger 4 is shown in FIG. 3 (A).
The positions Pa to Pf shown in can be selected. This selection is made by the selection switch 52 on the operation panel 51 shown in FIG. Above the selection switch 52, lamps 53a to 53f schematically showing the selected discharge position are provided, and each time the selection switch 52 is pressed, the lamps 53a to 53f.
53f lights up one by one in order and displays the selected discharge position. A movement switch SW1 described later is provided on the left side of the switch 52 on the operation panel 51.

The discharge auger 4 moves up and down in the direction of arrow C or D around the fulcrum 7 as shown in FIG. 3 (B). In the storage position shown in FIG. 2, the discharge auger 4 is lowered downward.
When moving from the storage position to the discharge position, FIG. 3 (B)
Move in the direction of arrow C indicated by. In this way the discharge auger 4
Is moved upward to rotate to any of the positions Pa to Pf, and the grain harvested in the tank 3 is discharged.

FIG. 5 is a hydraulic circuit diagram of a hydraulic device included in the combine.

The cylinder 11 is connected to the pump 16 via the direction switching valve 14. This directional valve 14 is a solenoid SOL.
1 is an electromagnetic switching valve including SOL2. Further, a relief valve 15 is provided between the direction switching valve 14 and the pump 16. The relief valve 15 connects the hydraulic circuit to the tank when the pressure oil pressure in the hydraulic circuit exceeds a set value, and keeps the pressure oil pressure in the hydraulic circuit below the set value.

When the solenoid SOL1 is driven in the direction switching valve 14, the pressure oil supplied from the pump 16 is guided to the cylinder 11. As a result, the piston 12 moves in the direction of arrow E, and the movement of the piston 12 is transmitted to the discharge auger 4 via the piston rod 13 and a link (not shown). Therefore, by driving the solenoid SOL1, the discharge auger 4 moves in the direction of arrow C shown in FIG. 3 (B).

On the other hand, when the solenoid SOL2 is driven, the pressure oil in the cylinder 11 is guided to the tank. This allows the discharge auger 4
Since the pressure oil in the cylinder 11 which has supported the weight of the above flows out to the outside, the piston 12 moves in the arrow F direction, and the discharge auger 4 moves in the arrow D direction shown in FIG. 3 (B). At this time, the outflow amount of the pressure oil flowing out from the cylinder 11 to the tank is throttled, so that the piston 12 moves slowly in the arrow F direction. Therefore, the moving speed of the discharge auger 4 in the direction of the arrow D is sufficiently slow, and it is possible to prevent an accident such as damage to the device due to a collision when the discharge auger descends. The direction switching valve 14 provided with this throttle corresponds to the moving speed switching means of the present invention.

FIG. 6 is a view showing a rotating mechanism of the discharge auger included in the combine.

A gear 63 is coaxially fixed to the outer peripheral portion of the discharge auger 4 near the fulcrum 7. A rotary gear 61 meshes with the gear 63 via an intermediate gear 62. The rotary gear 61 is fixed to the rotary shaft of the motor M1. Therefore, the rotation of the motor M1 is performed by the rotary gear 61 and the intermediate gear 62.
And is transmitted to the discharge auger 4 via the gear 63. The motor M1 is a pulse motor that can rotate in both forward and reverse directions, and the rotation of the motor M1 in the arrow G or H direction causes the discharge auger 4 to rotate in the arrow A or B direction. Motor M1
In, the rotation in the arrow G direction is the forward rotation, and the rotation in the arrow H direction is the reverse rotation.

A rotation position detection plate 71 shown in FIG. 7 is fixed near the fulcrum 7 of the discharge auger 4. The position Pc of the discharge auger 4 is provided on the outer peripheral portion of the rotational position detection plate 71.
Is cut out from the direction to the storage position HP in the direction of arrow A. A rotation detection switch SW3 that comes into contact with the rotation position detection plate 71 is provided near the fulcrum 7 of the discharge auger 4. The rotation detection switch SW3 rotates the rotation position detection plate 71 while the discharge auger 4 moves from the storage position HP in the direction of arrow A to the position Pc, or while moving from the position Pc to the storage position HP in the direction of arrow B.
Touch and turn on.

FIG. 8 is a block diagram of a control unit of the combine.

The CPU 81 turns on / off the movement switch SW1, the storage position switch SW2, the rotation detection switch SW3, and the upper position switch SW4 via the I / O interface 84.
Off data is input. The movement switch SW1 is a switch provided on the operation panel 51 as described above. The storage position switch SW2 contacts the discharge auger 4 at the storage position HP and turns on. The rotation detection switch SW3 comes into contact with the rotation position detection plate 71 and is turned on. Upper position switch SW4
Is the position detecting means of the present invention which is turned on when the discharge auger 4 is positioned at the upper part in the vertical direction.

Further, the CPU 81 turns on / off the switches SWa to SWf.
The off state is input. The switches SWa to SWf are turned on when the lamps 53a to 53f provided on the operation panel 51 are turned on. Furthermore, the detection data of the rotation detection sensor S1 that detects the rotation of the motor M1 is input to the CPU 81. This rotation detection sensor S1 is fixed to the rotation shaft of the motor M1 and detects slits of a slit plate having slits at equal intervals on the outer periphery,
A detection pulse is output when there is no slit at the opposing position. The CPU 81 is a memory area M of the RAM 83.
The number of pulses is integrated by the counter C assigned to A1.

A processing program for controlling each input / output device connected to the I / O interface 84 is written in advance in the ROM 82 connected to the CPU 81. The CPU 81 outputs control data to the motor driver 85 and the solenoid driver 86 according to this processing program. The motor driver 85 drives the motor M1 according to the output control data, and the solenoid driver 86 also drives the solenoids SOL1 and SOL2 based on the control data.

FIG. 9 is a flowchart showing a processing procedure of the combine control unit.

When the movement switch SW1 provided on the operation panel 51 is turned on, it is checked whether or not the upper position switch SW4 is turned on (n2). Upper position switch SW4
When is not on, the solenoid SOL1 is driven (n3) and the discharge auger 4 is moved upward. When the upper position switch SW4 is turned on, it is checked whether or not the storage position switch SW2 is turned on (n4). If the storage position switch SW2 is on, the switch SWa
The number of pulses of SWf corresponding to the switch that is turned on is read from the ROM 82. In the ROM 82, the rotation angle of the motor M1 required to move the discharge auger 4 from the storage position HP shown in FIG. 3 (A) to the positions Pa to Pf in the direction of arrow A is taken as the pulse number of the rotation detection sensor S1. I remember. Position Pa at n5
Of Pf, the number of pulses corresponding to the position selected as the ejection position by the selection switch 52 is read.

Next, the content of the counter C assigned to the memory area MA1 of the RAM 83 is cleared (n6), and if any of the switches SWa to SWc is turned on, the motor M1 is normally rotated (n7 → n8), and the switch is switched. SWd-SW
When any one of f is turned on, the motor M1 is reversely rotated (n7 → n9). When the positions Pa to Pc are selected as the discharge positions in n7 to n9, the motor M1 is rotated in the arrow G direction, and the discharge auger 4 is rotated in the arrow A direction from the storage position HP. On the other hand, when any of the positions Pt to Pf is selected as the discharge position, the motor M1 is rotated in the arrow H direction, and the discharge auger 4 is rotated from the storage position HP in the arrow P direction. By changing the rotation direction according to the selected position like this,
The discharge auger 4 can be moved to the selected discharge position in a short time. The driving of the motor M1 at n8 and n9 is continued until the content of the counter C matches the value of the pulse P read at n5 (n10). In the above, n2
→ n3 corresponds to the rotational movement means of the present invention.

At n4, when the discharge auger 4 is not in the storage position HP and the storage position switch SW2 is off, it is checked whether the rotation detection switch SW3 is on.
When the rotation detection switch SW3 is on, the motor M1 is reversely rotated in the direction of arrow H (n11 → n12), and when the rotation detection switch SW3 is off, the motor M1 is normally rotated in the direction of arrow G ( n11 → n13). This n11
By the processing of to n13, when the discharge auger 4 is in the position from the storage position HP to the position Pc in the direction of arrow A, the motor M1 is reversely rotated in the direction of arrow H and the discharge auger 4 is rotated in the direction of arrow B. On the other hand, the discharge auger 4 is at the storage position H.
When it is in the range from P to the position Pc in the direction of arrow B, the motor M1 is normally rotated in the direction of arrow G, and the discharge auger 4
Is rotated in the direction of arrow A. The driving of the motor M1 in n12 and n13 is continued until the content of the counter C becomes 0 (n14).

The RAM 83 is backed up by a battery, and the current position of the discharge auger 4 is specified by the content of the counter C assigned to the memory area MA1. Therefore, when the content of the counter C becomes 0, the discharge auger 4 is at the storage position H.
Located at or above P. When the content of the counter C becomes 0, the solenoid SOL2 is driven until the storage position switch SW2 is turned on (n15, n16). By driving the solenoid SOL2, the discharge auger 4 moves in the direction of arrow D shown in FIG. 3 (B). N4 → n1 above
When the discharge auger 4 is not at the storage position HP by the processing of 1 to n16, the discharge auger 4 is moved to the storage position HP.

As described above, according to this embodiment, the rotation of the motor M1 is permitted only when the upper position switch SW4 detects the discharge auger 4, and the upper position switch SW4 does not detect the discharge auger 4. First, the hydraulic device is operated to move the discharge auger 4 to the upper part, and then the motor M1 is rotated. Therefore, in the lower position, the discharge auger 4 does not rotate and does not collide with other devices or operators on the combine top surface.

Further, the storage position switch SW2 is turned on, and the discharge auger 4
When the movement switch SW1 is operated in a state where is positioned at the storage position HP, the discharge auger 4 is moved to the discharge position selected from the positions Pa to Pf. At this time, the discharge auger 4 is rotated toward the short distance side according to the position selected as the discharge position. Therefore, the moving time of the discharge auger 4 can be shortened. On the other hand, the storage position switch SW2 is off, and the discharge auger 4 is in the storage position H.
If the movement switch SW1 is operated in a state where it is not at P, the discharge auger 4 is moved to the storage position HP. At this time, the discharge auger 4 is moved to the storage position H by the rotation detection switch SW3.
It is determined whether the position is in the range of the arrow A direction or the direction of the arrow B from the storage position HP between the position P and the position Pc, and based on the result of this determination, the sheet is discharged to the side closer to the storage position HP. The auger 4 rotates. This also makes it possible to shorten the moving time of the discharge auger 4.

Furthermore, since the discharge auger 4 can be moved to the discharge position or the storage position by operating a single switch, the operation can be simplified. It is also possible to provide two switches so that the discharge auger 4 is moved to the discharge position when one of them is operated and is returned to the storage position when the other is operated.

In most cases, the position Pa is selected as the discharge position of the discharge auger 4 in the general grain discharge work. This is because, as shown in the plan view of FIG. 2, the mowing unit 2 is offset to one side with respect to the traveling direction of the combine 1, and the crop on the farmland on the opposite side of the combine 1 is already mowed. There is. Therefore, the grain transporting vehicle is generally placed laterally on the opposite side of the combine 1 from the offset side, and in this state, the grain is discharged from the discharge auger 4 to the bed of the transporting vehicle. When the discharge auger 4 is limited to the above-described usage state, the discharge auger 4 is selected at the position Pa or Pb as the discharge position. Therefore, the discharge auger 4 at the storage position HP is always indicated by the arrow A.
Even if the discharge auger 4 is rotated in the direction, no adverse effect is exerted when the discharge auger 4 is rotated. This also applies to the case where the discharge auger 4 is returned from the discharge position to the storage position HP, and may be always rotated in the arrow B direction. As a result, it is not necessary to detect the discharge position when returning the discharge auger 4 to the storage position HP, and the rotary position detection plate 71 and the rotary position switch SW3 shown in FIG. 7 can be eliminated.

(h) Effect of the Invention According to the present invention, when the position detecting means does not detect the discharge auger and the rotation operation of the discharge auger is instructed, the rotation operation is performed after raising the discharge auger. Therefore, the rotation operation of the discharge auger is always performed only at the upper position in the vertical direction, and the rotation of the discharge auger does not cause a collision with other devices or operators protruding on the upper surface of the combine harvester. Since the descending speed when lowering to store in the storage position is slower than the rising speed, the discharge auger does not come into contact with the members forming the storage position with a large impact force, and the grain discharge work The safety at the time can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a combine with an exhaust auger according to an embodiment of the present invention, FIG. 2 is a schematic plan view of the combine, and FIGS. 3 (A) and 3 (B). Is a schematic plan view and a front view showing the operation of the discharge auger in the combine,
4 is a diagram showing a part of an operation panel of the combine, FIG. 5 is a hydraulic circuit diagram of a hydraulic device of the combine, FIG. 6 is a diagram showing a configuration of a rotating mechanism of the combine,
FIG. 7 is a view showing a main part of the rotating mechanism, FIG. 8 is a block diagram of a control unit of the combine, and FIG. 9 is a flowchart showing a processing procedure of the control unit of the combine. 1 ... Combine, 4 ... Discharge auger, SW1 ... Moving switch (switch), SW2 ... Storage position switch (storage position detecting means), H
P: Home position.

Claims (1)

[Claims] Claims: 1. A combiner comprising a discharge auger which rotates in a horizontal plane with one end as a fulcrum and which vertically moves up and down with the one end as a fulcrum, and a position detection for detecting the discharge auger at an upper position in the vertical direction. Means and rotation for rotating the discharge auger after raising the discharge auger until the position detecting unit detects the discharge auger when the rotation operation of the discharge auger is instructed in a state where the position detection unit does not detect the discharge auger. A combine comprising a discharge auger provided with a moving means and a moving speed switching means for lowering the lowering speed of the discharging auger than the rising speed.