JP2946674B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a combine.

(Prior Art) Conventionally, a traveling device, a threshing device provided at a position above the traveling device, and a mowing unit provided at a position in front of the traveling device,
An engine provided on the body frame, a power transmission mechanism provided between the engine and the transmission shaft of the reaping unit, and a power transmission mechanism which is automatically turned off when the reaping unit is moved up by a certain height, and is moved down. It is known that an automatic clutch is provided for automatically turning on the power transmission mechanism.

In addition, Japanese Unexamined Utility Model Publication No. Sho 59-1333025 and Japanese Unexamined Patent Publication No. Sho 55-41 disclose a configuration in which the power transmission mechanism is directly turned on and off only from the detection result obtained by the ground height sensor.

(Problems to be Solved by the Invention) As for the above-mentioned known one, as shown in FIG. 7, the mowing part is moved up to the height of the non-working position A to turn the machine body. In the lower auto clutch operating position B, the automatic clutch 22 is already disengaged. However, in the operation in the wetland shown in FIG. 8, since the machine body is sunk, even if the mowing part is slightly moved upward, the automatic clutch is in the operating position B and the automatic clutch is disengaged. Also, as shown in Fig. 9, in the work on the ridge, the mowing part is located so as to protrude into the field, so that the mowing part moves upward, and even if the mowing part moves slightly, the automatic clutch operates. At the position B, the automatic clutch is disengaged.

Further, the above-mentioned publication simply switches on and off according to the detection result of the other height sensor, so if the detection result frequently changes due to vertical vibration or the like accompanying traveling, hunting occurs in the on / off operation of the auto clutch. However, there is a problem of lack of stability.

(Means for Solving the Problems) Accordingly, the present invention provides a traveling device 2, a threshing device 3 provided at a position above the traveling device 2, a reaper 4 provided at a position in front of the traveling device 2, and an engine. A power transmission mechanism provided between the power transmission shaft 78 and the transmission shaft 30 of the reaping unit 4; and the power transmission mechanism is automatically turned off when the reaping unit 4 is moved higher than a set height with respect to the fuselage. An auto clutch 22 that automatically turns on the power transmission mechanism when moving below the height
And the set height can be changed and set according to the height of the reaper 4 with respect to the ground.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a combine body frame. A traveling device 2 is provided below the body frame 1, and a threshing device is provided above the body frame 1. 3, and a reaper 4 is provided at a position in front of the body frame 1.

In FIG. 2, reference numeral 5 denotes a cutting section frame of the cutting section 4, reference numeral 6 denotes a weed body, reference numeral 7 denotes a cereal stem raising device, reference numeral 8 denotes a cereal stem raking device, reference numeral 9 denotes a cutting blade, and reference numeral 10 denotes the cereal stem raking device 8. And a cereal culm transport device 11 provided between the culm feeding device of the threshing device 3 and a support pipe 11 attached to the rear side of the mowing unit frame 5. Device 7, cutting blade 9
It has a built-in transmission mechanism for transmitting power to the like.

The upper end of the support pipe 11 is a left and right transmission pipe 12.
, And both ends of the transmission pipe 12 are rotatably mounted on the metal members 13 (FIG. 3).

As shown in FIGS. 5 and 6, the metal members 13 are attached to the upper ends of the vertical frames 14, 14 of the mowing part suspension, and the mowing part 4 is centered on the metal members 13, 13 by the support pipe 11. The mowing unit can be moved up and down by a vertical cylinder 17. (FIG. 2).

The lower ends of the mowing part suspension vertical frames 14, 14 are fixed to the body frame 1 (FIG. 5). The front ends of the mowing portion suspension front and rear frames 15, 15 are fixed to the upper portions of the mowing portion suspension vertical frames 14, 14, and the rear ends of the mowing portion suspending front and rear frames 15, 15 are fixed to the fixed side frame 16 side of the threshing device 3 side. Fixed to.

Thus, a power transmission mechanism 19 is provided between the reaping unit 4 and the transmission case 18 provided on the machine body frame 1 side, and the operation of the reaping unit 4 is inserted into the path of the power transmission mechanism 19. A clutch to be disengaged is provided (FIGS. 3 and 4).

In this embodiment, there are provided a manually operated clutch 21 which is manually turned on and off, and an automatic clutch 22 which is automatically turned on and off by the vertical movement of the reaper 4.

Describing the power transmission mechanism 19, an output pulley 24 is fixed to an output shaft 23 at the upper right side of the transmission case 18.

A lower portion of a vertical bearing member 25 is fixed to the upper surface of the transmission case 18, and a left-right intermediate shaft 26 is mounted on the upper portion of the bearing member 25. At the right end of the intermediate shaft 26 is a right intermediate pulley 27
Is fixed, and a right belt 28 is looped between the right intermediate pulley 27 and the output pulley 24.

A left intermediate pulley 29 is fixed to the left end of the intermediate shaft 26,
A left belt 32 is wound around a left intermediate pulley 29 and an input pulley 31 fixed to a transmission shaft 30 mounted in the transmission pipe 12.

A mowing portion tension clutch roller 33 of the manually operated clutch 21 is provided on the left side belt 32 so as to be able to freely contact and separate therefrom.

Further, an auto tension clutch roller 34 of the auto clutch 22 is provided on the right belt 28 so as to be able to freely contact and separate therefrom.
Note that the automatic clutch 22 and the manually operated clutch 21 can be shared.

The lower end of the wire 35 is locked to the auto tension clutch roller 34 of the auto clutch 22 and the upper end of the wire 35 is locked to an auto clutch operating mechanism 36 provided near the cutting unit suspension vertical frame 14 (the 5), the automatic clutch actuating mechanism 36 moves up and down of the mowing unit 4 to move the wire 35
Is pulled or released to move the auto tension clutch roller 34 toward and away from the right belt 28 to operate.

The auto clutch operating mechanism 36 of the auto clutch 22
Are provided on the frame 15 before and after the mowing part suspension.

Both ends of the horizontal rod 37 in the left-right direction are fixed to the mowing portion suspension front / rear frames 15, 15, and the lower part of a pair of left and right vertical plates 38, 38 protruding upward is fixed to the upper surface of the horizontal rod 37. A shaft 39 in the left-right direction is rotatably mounted on the upper portions of the vertical plates 38, 38, and an upper portion of a turning plate 40 having a triangular plate shape in a side view is fixed to a left-right intermediate portion of the shaft 39. A roller 41 is attached to the lower front end of the rotating plate 40,
A traction shaft 42 is attached to the lower rear end of the rotating plate 40 so as to be rotatable only. The elongated shaft 44 of the engaging piece 43 provided at the tip of the wire 35 is engaged with the traction shaft 42.

On the other hand, the transmission pipe at a position facing the roller 41
12, a cam plate 45 is rotatably mounted only on the cam plate 45, and the cam plate 45 comes into contact with the roller 41 and
A cam surface 46 for rotating the cam is formed.

The cam surface 46 turns the turning plate 40 via the roller 41, and the turning plate 40 pulls the wire 35 by the pulling shaft 42, and causes the auto tension clutch roller 34 to
Disengage from 28 and disengage the auto clutch 22.

Thus, as shown in FIG.
To the height of the non-working position A to rotate the aircraft. In the automatic clutch operating position B lower than the height of the non-working position A, the automatic clutch 22 is disengaged.

However, in the operation in the wetland shown in FIG. 8, since the machine body is sinking, the automatic clutch 22 is disengaged by slightly moving the mowing part 4 upward. In addition, in the work on the bank, as shown in FIG. 9, the cutting unit 4 is positioned so as to protrude into the field, so that the cutting unit 4 is moved upward, and even if the cutting unit 4 is slightly moved upward. The automatic clutch 22 is in the automatic clutch operating position B and the automatic clutch 22 is disengaged.

In the present invention, the timing at which the automatic clutch 22 is disengaged is configured to be freely changeable by changing the position of the cam plate 45, and the mowing unit 4 is raised to a certain height above the ground even in wetland / ridge work. Automatic clutch 22 when activated
Is turned off.

That is, a gear 47 is formed on the outer periphery of the cam plate 45, and a gear 49 of a motor 48 is meshed with the gear 47.
Thus, the cam plate 45 is rotated with respect to the transmission pipe 12 to keep the distance between the roller 41 and the cam plate 45 constant (FIG. 10).

The motor 48 is controlled by providing a ground height detection sensor 50 to the mowing unit 4 (FIG. 11), and detecting the height of the mowing unit 4 from the ground by the ground height detecting sensor 50. The timing at which the automatic clutch 22 is disengaged is changed and adjusted based on the height of the reaper 4. The ground height detection sensor 50 may also be used as a cutting section height detection sensor for automatic cutting height control.

A potentiometer 51 controls the motor 48 by detecting the position of the cam plate 45 with respect to the transmission pipe 12 and comparing the detected position with the ground height detected by the ground height detection sensor 50.

The pulling shaft 42 of the automatic clutch operating mechanism 36 is engaged with a wire of a clutch for turning on and off the operation of the threshing device 3, the grain culm transport device 10, and the grain culm supplying device (FIG. 6). ).

FIG. 13 shows a second embodiment of the auto clutch operating mechanism 36, in which one end of a spring 56 is locked to an arm 55 of an auto tension clutch roller 34, and the other end of the spring 56 is connected to a control motor corresponding to the motor 48. It is locked to an arm 58 which is rotated by 57, and the arm 58 is automatically controlled by the motor 57 to change and adjust the disengagement timing of the auto clutch 22.

Reference numeral 59 denotes a threshing clutch provided at a desired position. One end of a spring 62 is locked to an arm 61 of a clutch roller 60 of the threshing clutch 59, and the other end of the spring 62 is locked to an arm 64 which is rotated by a control motor 63. The control motor 63 is automatically controlled by the ground height detection sensor 50 to change and adjust the timing at which the threshing clutch 59 is disengaged.

Thus, the body is provided with the auto-lift mechanism 65 and the back-lift mechanism 66.

The auto-lift mechanism 65 automatically extends the reaper upper and lower cylinders 17 when the cereal stalk presence / absence sensor provided on the reaper 4 detects that there is no cereal culm for a certain period of time while the machine is running. When the shift lever is switched to the reverse position, the back lift mechanism 66 automatically extends the cutting unit vertical cylinder 17 to move the cutting unit 4 upward.

The auto-lift mechanism 65 and the back-lift mechanism 66 are configured to move the reaper 4 upward beyond the auto-clutch operating position B to the non-working position A,
When the auto-lift mechanism 65 and the back-lift mechanism 66 are operated, the automatic clutch 22 is reliably disengaged.

Further, in the present embodiment, the timing for disengaging the auto clutch 22 is changed and adjusted, and the automatic clutch 22 is disengaged.
Auto-clutch release mechanism 67 to prevent operation of 22
(FIG. 5). Auto clutch release mechanism 67
Is configured so that the position of the outer casing 68 at the upper end of the wire 35 can be switched between a position where it can be pulled by the operating lever 69 and a position where it cannot be pulled.

FIG. 14 shows a cooling fan 70 attached to an engine 78. The cooling fan 70 is rotated by a belt 73 wound between a passive pulley 71 and an output pulley 72 of the cooling fan 70. A tension clutch 74 is provided on the belt 73, and the tension clutch 74 is interlocked with a clutch operation lever 76 of the grain discharging auger 75.

That is, when the machine is stopped and the grain discharging auger 75 is operated by the clutch operation lever 76 to perform the grain discharging operation, the tension clutch 74 is disengaged, the rotation of the cooling fan 70 is stopped, and the Inlet cover 77 provided
Drop the dust that has been sucked in (Fig. 15).

(Operation) Next, the operation will be described.

The present invention has the above-described configuration, in which weeding is performed by a weeding body 6,
Raised by the cereal stem raising device 7, cut by the cutting blade 9, scraped by the cereal stem scraping device 8, and sent to the cereal stem transport device 10,
The culm conveying device 10 supplies the culm to the cereal culm supply device of the threshing device 3, and threshing is performed by the threshing device 3.

When reaching the end point of the field, the cereal culm sensor provided in the mowing unit 4 detects the absence of cereal culm for a certain period of time, and activates the auto-lift mechanism 65. The mowing unit 4 is moved upward to the non-working position A by extending the mower 17, the direction is changed, and the mowing and threshing work is performed again.

Thus, the transmission pipe of the support pipe 11 of the reaper 4
In the path of the power transmission mechanism 19 between the transmission shaft 30 mounted on the shaft 12 and the transmission case 18 provided on the body frame 1, an automatic clutch 22 automatically engaged / disengaged by the vertical movement of the mowing unit 4. As shown in FIG. 5, when the cutting section vertical cylinder 17 is extended and the support pipe 11 is rotated upward, the transmission pipe 12 rotates with respect to the metals 13 and 13 so that the transmission pipe 12 Cam plate fixedly mounted
By rotating 45, the cam surface 46 of the cam plate 45 pushes the roller 41 downward, and the roller 41 rotates the rotating plate 40 about the shaft 39, and raises the traction shaft 42 at the rear of the rotating plate 40. The pulling shaft 42 pulls the wire 35 through the engagement piece 43, the wire 35 separates the auto tension clutch roller 34 from the right belt 28, automatically turns off the auto clutch 22, Stop. In this embodiment, since the wire for engaging and disengaging the threshing clutch is locked to the traction shaft 42, the grain culm transport device 10 and the threshing device 3 are simultaneously stopped.

In the above case, as shown in FIG. 7, usually, the mowing unit 4 is moved up to the height of the non-working position A to rotate the machine. In the automatic clutch operating position B lower than the height of the non-working position A, the automatic clutch 22 is disengaged.

However, in the operation in the wetland shown in FIG. 8, since the machine body is sinking, the automatic clutch 22 is disengaged by setting the automatic clutch operating position B by slightly moving the mowing part 4 upward. In addition, as shown in FIG.
Is located so as to protrude into the field, the mowing part 4 is moved upward by that amount, and even if the mowing part 4 is slightly moved, the automatic clutch 22 is brought to the operating position B and the auto clutch 22 is disengaged.

According to the present invention, the timing at which the automatic clutch 22 is disengaged can be changed by changing the position of the cam plate 45. That is, the cam plate
Since a gear 47 is formed on the gear 45 and a gear 49 of a motor 48 is meshed with the gear 47 (FIG. 10), when the motor 48 is rotated forward and reverse, the motor 48 is connected to the gear 47 via the gear 49 and the gear 47. By rotating the cam plate 45 with respect to the transmission pipe 12, the relative position between the cam surface 46 of the cam plate 45 and the roller 41 is changed, and the timing for disengaging the auto clutch 22 is changed.

That is, when the work is performed on a wetland or a ridge, since the mowing part 4 has already moved above the normal height, the cam plate 45
As shown in Fig. 10, the cam plate
Rotate 45 clockwise and rotate cam plate 45
41, the distance between the cam plate 45 and the roller 41 is made constant, and the timing at which the automatic clutch 22 is disengaged is made constant.

The motor 48 moves a position where the mowing unit 4 can move up to a height set based on the height of the mowing unit 4 from the ground detected by the ground height detection sensor 50 provided in the mowing unit 4. Calculation is performed, and automatic control is performed based on the calculation. Accordingly, the automatic clutch 22 is always disengaged when the height of the cam plate 45 becomes constant above the ground without troublesome positioning of the cam plate 45, thereby improving workability.

In the embodiment of FIG. 13, one end of a spring 56 is locked to the arm 55 of the auto tension clutch roller 34, and the other end of the spring 56 is locked to an arm 58 which is rotated by a control motor 57 corresponding to the motor 48. Then, the control motor 57 is automatically controlled by the ground height detection sensor 50 to change and adjust the disengagement timing of the automatic clutch 22.

The automatic clutch 22 is automatically engaged when the mowing section 4 moves downward below the automatic clutch operating position B.

However, in the machine body of the present embodiment, when the grain culm presence / absence sensor provided in the mowing unit 4 detects a state where there is no grain culm for a predetermined time, the mowing unit upper / lower cylinder 17 is automatically extended and the mowing unit 4 is moved. An auto-lift mechanism 65 for moving up and a back-lift mechanism 66 for automatically extending the reaping unit vertical cylinder 17 and moving the reaping unit 4 upward when the shift lever is switched to the reverse position are provided. Since the auto-lift mechanism 65 and the back-lift mechanism 66 are configured to move the mowing part 4 up to the non-working position A beyond the auto-clutch operating position B, the auto-lift mechanism 65 and the back-lift mechanism When the operation of 66 is performed, the automatic clutch 22 is reliably operated.

(Effect) Conventionally, a traveling device, a threshing device provided at a position above the traveling device, and a mowing unit provided at a position in front of the traveling device,
An engine provided on the body frame, a power transmission mechanism provided between the engine and the transmission shaft of the reaping unit, and a power transmission mechanism which is automatically turned off when the reaping unit is moved up by a certain height, and is moved down. It is known that an automatic clutch is provided for automatically turning on the power transmission mechanism.

In the known machine, as shown in FIG. 7, the mowing part is moved up to the height of the non-working position A to turn the aircraft, but in the auto clutch operating position B lower than the height of the non-working position A, The automatic clutch 22 is already disengaged. However, in the operation in the wetland shown in FIG. 8, since the machine body is sunk, even if the mowing part is slightly moved upward, the automatic clutch is in the operating position B and the automatic clutch is disengaged. Also, as shown in Fig. 9, in the work on the ridge, the mowing part is located so as to protrude into the field, so that the mowing part moves upward, and even if the mowing part moves slightly, the automatic clutch operates. At the position B, the automatic clutch is disengaged.

However, the present invention relates to a traveling device 2, a threshing device 3 provided at a position above the traveling device 2, a cutting unit 4 provided at a position in front of the traveling device 2, an engine 78 and a transmission shaft of the cutting unit 4. 30 and the power transmission mechanism is automatically turned off when the mowing unit 4 moves above the set height with respect to the machine body, and when the mowing unit 4 moves below the set height, the power transmission mechanism is turned off. Auto clutch that automatically turns on the mechanism
22 is provided, and the set height can be changed and set according to the height of the mowing part 4 with respect to the ground. Therefore, as described in detail above, the auto clutch 22 Because the height set for the aircraft is used as a reference, it is hardly affected by the ground height of the reaping unit 4 that changes frequently, and hunting is prevented. It operates at a distance from the ground and prevents malfunctions during work on wetlands and ridges, thereby improving workability and operability.

[Brief description of the drawings]

1 is an overall side view, FIG. 2 is a side view of a main part, FIG. 3 is a plan view of the same, FIG. 4 is a front view of the same, FIG. 5 is a side view of an automatic clutch operating mechanism, and FIG. 7 to 9 are side views of the fuselage, FIG. 10 is a side view of a main part, FIG. 11 is a side view, FIG. 12 is a circuit diagram, FIG. 13 is a second embodiment diagram, FIG. 14 is a front view of the cooling fan, and FIG. DESCRIPTION OF SYMBOLS 1 ... frame, 2 ... traveling device, 3 ... threshing device, 4 ... cutting unit, 5 ... cutting unit frame, 6 ... weed plant, 7 ... cereal stem raising device, 8 ... … Stalk raker, 9 ……
Cutting blade, 10 ... Grain stalk transport device, 11 ... Support pipe, 12 ...
Transmission pipe, 13 ... Metal, 14 ... Vertical frame for suspension of cutting unit, 15 ... Front and rear frames for suspension of cutting unit, 16 ... Fixed frame, 17 ... Vertical cylinder for cutting unit, 18 ... Transmission case, 19 ... Power transmission mechanism, 21 ... manually operated clutch,
22 ... Auto clutch, 23 ... Output shaft, 24 ... Output pulley, 25 ... Bearing member, 26 ... Intermediate shaft, 27 ... Right intermediate pulley, 28 ... Right belt, 29 ... Left intermediate pulley, 30…
... Transmission shaft, 31 ... Input pulley, 32 ... Left belt, 33 ...
... Mowing part tension clutch roller, 34 ... Auto tension clutch roller, 35 ... Wire, 36 ... Auto clutch operating mechanism, 37 ... Horizontal rod, 38 ... Vertical plate, 39 ... Shaft,
40 ... rotating plate, 41 ... roller, 42 ... traction shaft, 43 ... engaging piece, 44 ... long hole, 45 ... cam plate, 46 ... cam surface, 47 ... gear, 48 ... ... Motor, 49 ... Gear, 50 ... Ground height detection sensor, 51 ... Potentiometer, 55 ... Arm, 56 ... Spring, 57 ... Control motor, 58 ... Arm,
59 ... threshing clutch, 60 ... roller, 61 ... arm, 62
…… Spring, 63 …… Control motor, 64 …… Arm, 65 …… Auto lift mechanism, 66 …… Back lift mechanism, 67 …… Auto clutch release mechanism, 68 …… Outer casing, 69…
... operating lever, 70 ... cooling fan, 71 ... passive pulley,
72: Output pulley, 73: Belt, 74: Tension clutch, 75: Grain discharge auger, 76: Clutch operation lever, 77: Intake cover, 78: Engine.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-41 (JP, A) JP-A-62-296808 (JP, A) JP-A-63-202313 (JP, A) 133025 (JP, U) Actually open 57-151037 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01D 34/00-34/28 A01D 69/00-69/00 303

Claims (1)

(57) [Claims] 1. A traveling device 2, a threshing device 3 provided at a position above the traveling device 2, a cutting unit 4 provided at a position in front of the traveling device 2, a transmission shaft of an engine 78 and the cutting unit 4. 30 and the power transmission mechanism is automatically turned off when the mowing unit 4 moves above the set height with respect to the machine body, and when the mowing unit 4 moves below the set height, the power transmission mechanism is turned off. An automatic clutch 22 for automatically turning on a mechanism, wherein the set height can be changed and set according to the height of the reaper 4 with respect to the ground.