JPH0523039A - Cutting section of combine - Google Patents

Abstract

PURPOSE:To prevent the falling or spilling of grain straws during the conveyance by installing a cut grain straw-sensing sensor in a cutting section and by operating a clutch when the sensor senses cut grain straws even when a cutting section is lifted to a non-working position. CONSTITUTION:A sensor 45 for sensing cut grain straws is installed at a desired position of a cutting section 4 and, when the sensor 45 senses grain straws, the sensor 45 is connected to a clutch motor 39 so that a clutch 29 is not switched off even when the cutting section 4 is lifted to a non-working position in the cutting section of a combine. When the residues of grain straws cut with a cutting blade 8 remain in the cutting section at the lift-starting time of the cutting section 4 and when the remaining grain straws are sensed with the grain straw-detecting sensor 45, the cutting section 4 is continuously operated. The remaining grain straws are thereby smoothly carried with an ear tip carrier 10 and with a root carrier 11, and the falling or spilling of the grain straws is prevented during the conveyance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester.

[0002]

2. Description of the Related Art In Japanese Patent Laid-Open No. 64-10912, which has been publicly known, a cutting unit having a raising device, a cutting blade, a tip carrying device and a root carrying device is provided at the tip of a cutting part support pipe for vertical movement. A mowing unit clutch for mounting and disabling the power of the mowing unit is provided in the support pipe, and a clutch motor for engaging and disengaging the clutch is provided at a desired position of the machine body. It is described that the clutch is disengaged automatically by moving up to the height of the non-working position to disengage the clutch.

[0003]

The above-mentioned known structure has a structure in which the clutch motor is automatically actuated to disengage the clutch when the cutting unit is moved up to the height of the non-working position for turning. The idea is that the grain culm is not cut when the cutting unit is moved up to the height of the non-working position. However, even if the reaper is moved up to the height of the non-working position, the rest of the already cut grain culm is conveyed by the tip conveying device and the root conveying device, so that the known ones are:
There is a problem that the remaining grain culms are stopped while being sandwiched between the tip conveying device and the root conveying device.

[0004]

It is an object of the present invention, even if the mowing part is moved up to the height of the non-working position, when the rest of the already cut grain culms are conveyed by the tip conveying device and the root conveying device,
It is designed to be operated continuously.

[0005]

Therefore, according to the present invention, a cutting section supporting pipe 14 for vertically moving a cutting section 4 having a raising device 7, a cutting blade 8, a tip conveying device 10 and a root conveying device 11 is provided. The support pipe 14 is provided with a cutting part clutch 29 for turning on and off the power of the cutting part 4, a clutch motor 39 for turning on and off the clutch 29 is provided at a desired position of the machine body, and the clutch motor 39 is provided. Is configured to automatically operate to disengage the clutch 29 when the cutting unit 4 is moved up to the height of the non-working position,
At the desired position of the mowing unit 4, a sensor 45 for sensing the mowing grain culm
Is provided, and when the grain culm detection sensor 45 detects that there is a cut grain culm even when the reaper 4 moves to the non-working position, the grain culm detection is made so as not to disengage the clutch 29. This is a combine harvesting unit in which the sensor 45 and the clutch motor 39 are associated with each other.

[0006]

An embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 is a frame, 2 is a traveling device mounted below the frame 1, 3 is a threshing section provided at an upper position of the frame 1, and 4 is a cutting section provided at a front position. Mowing part 4
A grass body 5 is provided at the foremost end, a raising device 7 having a raising lug 6 is provided behind the grass body 5, a cutting blade 8 is provided behind the raising device 7, and a scraping blade is provided above the cutting blade 8. Device 9,
An ear tip transfer device 10 and a root transfer device 11 are provided, and an ear tip transfer device 12 and a root transfer device 13 are provided between the tip transfer device 10, the root transfer device 11 and the threshing unit 3. The tip transfer device 12 and the root transfer device 13
The handle depth can be adjusted by configuring the start end side of the handle so as to move up and down. Then, 14 is a mowing section support pipe for attaching the mowing section 4 to the fuselage side, 15 is a horizontal tube provided at the upper end of the mowing section support pipe 14, and the horizontal tube 15 is provided above the support member 16 provided on the fuselage side. The cutting unit 4 is rotatably attached, and thus the cutting unit 4 is attached so as to be vertically movable via a cutting unit support pipe 14. Reference numeral 17 is a vertically moving cylinder.

An input shaft 18 is mounted on the horizontal cylinder 15 (FIG. 2), and an input pulley 19 for receiving power from the engine side is fixed to the input shaft 18. 20 is a gear fixed to the input shaft 18, 21 is a gear meshing with the gear 20, 22 is a shaft to which the gear 21 is fixed, 23 is a gear fixed to the other end of the shaft 22, 24
Is a gear that meshes with the gear 23, and 25 is a shaft to which the gear 24 is fixed. The shaft 25 drives the tip transfer device 12 and the root transfer device 13. Reference numeral 26 is another gear fixed to the shaft 18. Then, a rotary shaft 27 is provided in the mowing part support pipe 14, a gear 28 is loosely fitted on the rotary shaft 27, and the gear 28 meshes with the gear 26. A reaper clutch 29 is provided between the rotary shaft 27 and the gear 28. 30 is a clutch pawl formed on the gear 28, 31 is a clutch pawl that meshes with the clutch pawl 30, and 32 is a shifter.
Then, when the shifter 32 is automatically or manually operated to continuously disengage the clutch pawl 30 and the clutch pawl 31, the rotary shaft 27
Rotate and stop. 33 is a gear fixed to the lower end of the rotating shaft 27, 34 is a gear meshing with the gear 33, 35 is a gear for driving the cutting blade 8, 36 is a rotating shaft to which the gear 34 is fixed, and 37 is a pulling device 7. A rotating shaft 38 is an upper sprocket of the raising lug 6.

At the desired position of the machine body, the shifter-32
A clutch motor 39 for operating the
The controller 39 is connected via a control unit 40 to a clutch switch 41 provided at a desired position of the machine body. The clutch switch 41 is used for manual operation. Normally, it is off and the reaper clutch 29 is in the on state. When manually turned on, the reaper clutch 29 is disengaged. Reference numeral 42 is a switch for detecting the on / off state of the reaper section clutch 29. Instead of the clutch motor 39, the shifter 32 may be operated by any device such as a hydraulic cylinder. When the mowing unit 4 extends the vertical movement cylinder 17 to move it up to a predetermined height in the non-working position, the vertical movement cylinder 17 is automatically or manually operated.
The extension is stopped and turning is performed. Then, interlocking with the upward movement stop of the mowing unit 4, the mowing unit clutch 29 is disengaged to stop the operation of the mowing unit 4, and the operation stop operation of the mowing unit 4 is unnecessary to improve the operability. There is. However, if the operation is simply stopped along with the upward movement of the cutting unit 4, the scraping device 9, the tip transport device 10, and the root transport device 11 are stopped.
Since the transportation of the remaining grain culms that have been cut due to is also stopped, the grain culm that is being transported falls and a grain spill phenomenon occurs.

According to the present invention, a grain culm sensor 45 is provided at a desired position of the reaper 4, and when the grain culm sensor 45 is turned on, the reaper clutch 29 is held so as to maintain the engaged state of the reaper clutch 29. The clutch motor 39 of 29 and the grain culm detection sensor 45 are connected to each other. FIG. 5 shows a conventional circuit diagram in which the grain culm detection sensor 45 is connected (a coupler can be connected), and FIGS. 6 and 7 show a second embodiment of the cutting unit support pipe 14 and the support. When the mowing section height detection switch 46 is provided on one of the members 16 and the cam plate 47 is provided on the other side of the member 16, when the mowing section 4 is moved up to the set height, the mowing section height detection switch 4
6 and the cam plate 47 come into contact with each other to be turned on, the extension of the vertical movement cylinder 17 is stopped, and the clutch motor 39 is energized to disengage the reaper clutch 29. The grain culm detection sensor 45 is connected (coupler connectable) in the circuit of the height detection switch 46 and the clutch motor 39, and when the cutting section height detection switch 46 is turned on, the grain culm detection sensor 45 is connected. When the switch is on, the reaper section clutch 29 is held in the engaged state. A changeover switch 48 for switching between automatic and manual is provided, and when the manual operation is switched by the changeover switch 48, the reaper clutch 29 is disengaged when the clutch switch 41 is turned on.

Further, in the third embodiment of FIG. 8, the height of the cutting section 4 is detected by a resistance value at a position near the horizontal cylinder 15 and the support member 16 instead of the cutting section height detection switch 46. A position sensor 50 is provided, and when the position sensor 50 detects that the mowing unit 4 has moved up to a predetermined height, the extension of the vertically moving cylinder 17 is automatically stopped to stop the upper movement of the mowing unit 4. At this time, the clutch motor 39 is energized to disconnect the reaper section clutch 29 to stop the operation of the reaper section 4, and the position sensor 50 detects the height of the reaper section 4 as a non-working position. In this state, when the grain culm detection sensor 45 is turned on, the reaper section clutch 29 is kept in the on state and the reaper section 4 is not stopped. The resistance value of the position sensor 50 at the stop height of the mowing unit 4 is stored and set in the control unit 40 in advance, and the control unit 40, when the set value and the resistance value of the position sensor 50 match, the mowing unit. Stop the movement of 4. Further, in the second embodiment, when the grain culm detection sensor 45 is turned off (sensing that there is no grain culm), the clutch motor 39 is automatically energized to disengage the reaper clutch 29. In the third embodiment, the grain culm detection sensor 45
A time lag may be set between the turning off of the mowing section clutch 29 so that the clutch motor 39 may be energized after a predetermined time has elapsed after turning off, to ensure the transportation of the grain stems. Reference numeral 51 is a set dial for setting the height of the working position when the raised reaper 4 is automatically moved down to the working position.

Further, in the fourth embodiment of FIG. 9, a stop height set dial 52 is provided which can arbitrarily set the upper stop height of the mowing section 4. Further, in each of the above-mentioned embodiments, the relation between the grain culm detection sensor 45 and the clutch motor 39 (the reaper section clutch 29) is the same as that of the reaper section 4.
When the grain culm detection sensor 45 senses that there is no grain culm in a state in which is moved to the non-working position, the clutch motor 39 is automatically energized to disengage the reaper clutch 29, but normally In the working state, the grain culm detection sensor 45
Prevents the cutting unit clutch 29 from being disengaged even if it senses that there is no grain stalk, and prevents the cutting unit 4 from stopping during the shaving even if the grain stalk detection sensor 45 detects a missing stock. To do. In addition, the grain culm detection sensor 45 may also be used as a sensor for adjusting the handling depth of the tip inheriting and conveying device 12 and the root inheriting and conveying device 13. The reaper section clutch 29 is operated by operating a switch provided elsewhere.
When the power is supplied to the switch 39 so that it can be performed independently of the rotations of the tip transfer device 12 and the root transfer device 13, the hand-cut grain culms can be supplied to the threshing part 3 with the cutting part 4 stopped.

[0012]

[Operation] Next, the operation will be described. When the engine is started and the traveling device 2 is rotated and moved forward, the grass is divided by the grass body 5, raised by the raising lug 6, cut by the cutting blade 8, and scraped by the scraping device 9,
The tip transfer device 10 and the root transfer device 11 transfer them backward,
It is supplied to the threshing unit 3 by the tip transfer device 12 and the root transfer device 13 to perform threshing. Then, in the above work,
The rotation of the engine is transmitted from the input pulley 19 to the input shaft 18, and is transmitted to the shaft 22 via the gear 20 and the gear 21,
The tip transfer device 12 and the root transfer device 13 which are transmitted to the shaft 25 via the gears 23 and 24 and attached to the upper and lower ends of the shaft 25 are rotated. On the other hand, the rotation of the input shaft 18 is transmitted to the rotary shaft 27 via the gears 26, 28 and the reaper clutch 29, rotates the cutting blade 8 via the gears 33, 34, 35, and rotates the rotary shafts 36, 37. , The raising lug 6 is rotated via the upper sprocket 38.

A gear 28 is loosely fitted to the upper end of the rotary shaft 27, a clutch pawl 30 is provided on the gear 28, and a clutch pawl 31 which can be detachably attached to the clutch pawl 30 is slidable with respect to the rotary shaft 27. The clutch unit 29 is provided on the rear side of the clutch unit 29, and the shifter 32 and the clutch motor of the clutch unit 29 are removed.
When the cutting unit 4 is moved up to a predetermined height to turn, the clutch switch 39 energizes the clutch motor 39 and the shifter 32 slides the clutch pawl 31 in the axial direction. Then, when the clutch claw 30 and the clutch claw 31 are disengaged from each other, the reaper 4 is stopped and swiveled. Then, the reaping unit 4 is configured such that when it is moved up to a predetermined height automatically or manually, the operation of the reaping unit 4 is automatically stopped and turning or the like can be performed. Even if there is, when the operation is stopped when the mowing unit 4 is set to the non-working position, when the already cut residual grain culm is held by the scraping device 9, the tip conveying device 10, and the root conveying device 11, Since the transport by the carry-in device 9, the tip transporting device 10, and the root transporting device 11 is also stopped, the grain culm that is being transported may drop and a grain spillover phenomenon may occur.

According to the present invention, a grain culm detection sensor 45 is provided at a desired position of the reaping section 4, and when the grain culm detection sensor 45 is turned on, the reaping section clutch 29 holds the engaged state. Since the clutch motor 39 of the clutch 29 and the grain culm detection sensor 45 are connected to each other, the reaper 4
The grain culm that has already been cut by the cutting blade 8 at the time of starting the upward movement is sensed by the grain culm detection sensor 45 and continuously operates the reaper 4, so that the scraping device 9, the tip transport device 10, and the root transport device 11 operate. It is transported smoothly and prevents falling of grain culm and spillage of grain culm during transportation. Then, when the grain culm detection sensor 45 is turned off (sensing that there is no grain culm), the cutting unit clutch 29 is automatically disengaged (may be disengaged by manual operation).

Further, in the embodiment shown in FIGS. 6 and 7, one of the cutting section support pipe 14 and the support member 16 is provided with a cutting section height detection switch 46, and the other is provided with a cam plate 47. When the cutting unit 4 is moved up to the set height, the cutting unit height detection switch 46 and the cam plate 47 come into contact with each other to be turned on, thereby stopping the upward movement of the cutting unit 4 and causing the clutch motor 39 to move. Energize to power the reaper clutch 2
Turn off 9. In this case, when the cutting section height detection switch 46 is in the ON state and the grain culm detection sensor 45 is in the ON state, the cutting section clutch 29 is kept in the ON state,
Since the reaping unit 4 continues to operate, the grain culm being conveyed is conveyed as it is to the threshing unit 3 to prevent the grain culm from falling and the grain spillage phenomenon during conveyance.

Further, in the embodiment of FIG. 8, the resistance value of the position sensor 50 is set in advance, and the mowing unit 4
When the control unit 40 detects that the resistance value of the position sensor 50 has reached the set value by moving up, the upper movement of the mowing unit 4 is stopped, and at this time, when the grain stalk sensor 45 is turned on, Part clutch 29 is kept in the engaged state and the mowing unit 4
Is operated, the grain culm being conveyed is conveyed to the threshing unit 3 as it is.

Further, in the embodiment shown in FIG. 9, since the stop height set dial 52 is provided which can arbitrarily set the height at which the cutting unit 4 is moved up and stopped, the cutting unit 4 can be easily carried out.
The stop height can be changed to improve workability.

[0018]

According to the present invention, the mowing part 4 having the raising device 7, the cutting blade 8, the tip conveying device 10 and the root conveying device 11 is attached to the tip of the mowing part supporting pipe 14 for vertical movement, and the supporting pipe 14 is attached. Is provided with a mowing section clutch 29 for turning on and off the power of the mowing section 4, and a clutch motor 39 for turning on and off the clutch 29 is provided at a desired position of the machine body, and the clutch motor 39 does not work the mowing section 4 When the clutch 29 is disengaged when it is moved up to the height of the position, the clutch 29 is disengaged. In the desired position of the mowing unit 4, a sensor 45 for detecting a mowing grain culm is provided, and the mowing unit is provided. 4 moves to the non-working position, and when the grain culm detection sensor 45 detects that there is a cut grain culm, the grain culm detection sensor 45 and the clutch mode are controlled so as not to disengage the clutch 29. Related to data 39 Since it is obtained by the reaper Combine linked to already at upward beginning of reaper 4 mowing blade 8
Even if there is a residual grain culm cut by the above, when the grain culm detection sensor 45 detects it, the cutting unit 4 is continuously operated, so that the tip transporting device 10 and the root transporting device 1 are operated.
1 to smoothly convey and prevent falling of grain culm and grain spillage during transportation.

[Brief description of drawings]

FIG. 1 is a side view of a combine harvester.

FIG. 2 is a cross-sectional view of a power transmission mechanism of a mowing section.

FIG. 3 is a perspective view of a main part.

FIG. 4 is a sectional view of a main part.

FIG. 5 is a circuit diagram.

FIG. 6 is a circuit diagram of a second embodiment.

FIG. 7 is a side view of the same.

FIG. 8 is a circuit diagram of a third embodiment.

FIG. 9 is a circuit diagram of a fourth embodiment.

[Explanation of symbols]

1 ... Frame, 2 ... Traveling device, 3 ... Threshing part, 4 ... Mowing part, 5 ... Weeding body, 6 ... Raising lug, 7 ... Raising device, 8 ... Cutting blade, 9 ... Scraping device, 10 ... Tip Conveying device, 11 ... Root conveying device, 12 ... Tip transfer device, 13 ... Root transfer device, 14 ... Mowing section support pipe, 15 ... Horizontal cylinder, 16 ... Support member, 17 ... Vertical movement cylinder, 18 ... Input shaft , 19 ...
Input pulleys, 20, 21 ... Gears, 22 ... Shafts, 23, 24
... gear, 25 ... shaft, 26 ... gear, 27 ... rotating shaft, 28 ...
Gears, 29 ... Mowing section clutches, 30, 31 ... Clutch claws, 32 ... Shifters, 33, 34, 35 ... Gears, 36,
37 ... Rotating shaft, 38 ... Upper sprocket, 39 ... Clutch motor, 40 ... Control part, 41 ... Clutch switch, 4
2 ... switch, 45 ... grain culm detection sensor, 46 ... cutting section height detection switch, 47 ... cam plate, 48 ... changeover switch,
50 ... Position sensor, 51 ... Set dial, 52
… Stop height set dial.

Claims (1)

Claim: What is claimed is: 1. A mowing unit 4 having a raising device 7, a cutting blade 8, a tip conveying device 10 and a root conveying device 11 is attached to the tip of a mowing unit supporting pipe 14 for vertical movement, The support pipe 14 is provided with a reaper clutch 29 for turning on / off the power of the reaper 4, and a clutch motor for turning on / off the clutch 29 is provided.
The clutch motor 39 is provided at a desired position of the machine body.
Is configured to automatically operate to disengage the clutch 29 when the cutting unit 4 is moved up to the height of the non-working position, and the cutting culm is detected at a desired position of the cutting unit 4. A sensor 45 is provided so that the clutch 29 is not disengaged when the grain culm detection sensor 45 detects that there is a culm grain even when the reaper 4 moves to the non-working position. A combine cutting unit in which the culm sensor 45 and the clutch motor 39 are connected to each other.