JP2003070332A - Reaping part of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping part having a cylinder for supporting the second reaping blade, for raising and lowering the second reaping blade and capable of being easily attached and performed maintenances and rigidly supporting the second reaping blade. SOLUTION: This reaping part for a combine harvester is characterized by that a second reaping blade 25 for reaping the remaining culm shorter after reaped by a first reaping blade 20 is set behind a reaping part 8, a conveying elevator 13 is set at the left side of the center of the second reaping blade 25, the second reaping blade 25 is supported through a parallel link and set to be liftable by a cylinder 30 for lifting the second reaping blade and the cylinder 30 for lifting the second reaping blade is set at the right side of the conveying elevator 13.

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 the publicly known Japanese Utility Model Publication No. 63-4621, a traveling device provided at a lower position of a machine frame, a threshing device provided at an upper position of one of the machine frames, and the machine frame. Any one of the above, the Glen tank provided at the upper position on the other side, the control section provided at the front side of the Glen tank, the mowing section provided at the front position of the control section, and the side section of the control section It consists of a transport elevator that connects the mowing unit and the threshing device, the mowing unit, a scraping reel for scraping the grain culms of the field, a first cutting blade for cutting the tips,
A combine is provided with a retractable second cutting blade for root cutting.

[0003]

In the above-mentioned known example, the cylinder of the second cutting blade is shown, but the specific mounting structure is not described. Therefore, the present invention aims at facilitating mounting and maintenance and further stably and firmly supporting the second cutting blade.

[0004]

According to the present invention, therefore, the traveling device 2 is provided below the machine body frame 1 and the threshing device is provided at an upper position on one side 4 of the machine body frame 1. 3, a Glen tank 5 provided at a position above the other side 6 of the machine frame 1, a control section 7 provided in front of the Glen tank 5, and a mowing section 8 provided in front of the control section 7. And a transport elevator 13 located on the side of the control unit 7 for connecting the mowing unit 8 and the threshing device 3, and the mowing unit 8 has an adjustable position for scraping grain culms in the field. The harvesting reel 8 is a combiner provided with a take-up reel 15 and a first cutting blade 20 for cutting tips.
The second cutting blade 25 is provided at the rear part of the second cutting blade 25 for cutting low the remaining culm after being cut by the first cutting blade 20.
The transfer elevator 13 is arranged on the left side of the central portion of the second cutting blade 25, and the second cutting blade 25 is supported via a parallel link and can be moved up and down by a second cutting blade up-and-down cylinder 30. The cutting blade up-and-down cylinder 30 is arranged on the right side of the transport elevator 13 to constitute a combine harvesting section.

In the present invention, the parallel links for supporting the second cutting blade 25 are provided on both left and right sides of the transport elevator 13, and the second cutting blade up-and-down cylinder 30 is provided between the left and right parallel links. The harvesting part of the combine according to claim 1 characterized in that.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described. FIG. 1 and FIG. 2 are schematic views of a combine, 1 is a machine frame, 2 is a traveling device provided at a lower position of the machine frame 1,
Reference numeral 3 denotes a threshing device provided on one of the left and right sides of the upper position of the body frame 1, and 5 denotes the other side 6 which is a side portion of the threshing device 3.
The gren tank is provided on the front side of the glen tank 5, the control section having a driver's seat and the like is provided on the front side of the glen tank 5, and the mowing section 8 is a mowing section provided at the front position of the machine body frame 1.

The mowing section 8 comprises a left and right side wall 9, a rear wall 10 and a bottom wall 11 to form a mowing section frame 12,
A rear wall 10 of the reaping unit frame 12 and the threshing device 3 are connected by a transportation elevator 13. A grass body 14 is provided at the frontmost position of the side wall 9, and a take-up reel 15 is provided above the grass body 14. The take-up reel 15 is attached to the tips of a pair of left and right attachment arms 16 so that the front and rear positions can be adjusted.
The base portion of the mounting arm 16 is rotatably attached to the mowing portion frame 12 side. Therefore, the take-in reel 15 can be adjusted in the front-rear direction and the height. 17 is a front-back position adjusting cylinder,
Reference numeral 18 is a height adjusting cylinder.

At the front edge of the bottom wall 11 located below the take-up reel 15, the first cutting blade 2 for cutting the tip side of the grain culm.
0 is set. The first cutting blade 20 has a well-known configuration, and is constituted by a so-called left and right hair clipper sliding blade and a fixed blade. A left and right auger 21 is axially mounted behind the first cutting blade 20.

The reaping section 8 is provided around the upper rotary shaft 22 of the transfer elevator 13 with respect to the machine body.
The height of the first cutting blade 20 can be changed by adjusting the cutting height. Reference numeral 23 is a vertical moving cylinder for the reaper. A second cutting blade 25, which will be described in detail below, is provided between the rear surface of the rear wall 10 of the cutting unit frame 12 of the cutting unit 8 and the front end of the traveling device 2. Second cutting blade 2
5 is for cutting from the root side the grain culm remaining in the field after cutting the tips with the first cutting blade 20. The second cutting blade 25 is attached to a second cutting blade mounting frame 26 in the left-right direction, and the second cutting blade mounting frame 26 has a lower portion of a supporting rod 27 in the vertical direction attached to the left and right sides of the second cutting blade mounting frame 26. The tip of an arm 28 is axially attached to the upper part and the lower part, respectively, and a support rod 27 and an arm 28 constitute a vertical link 29. A second cutting blade vertical cylinder is provided between the rear wall 10 and the second cutting blade mounting frame 26. 30 is provided. 31 is the second cutting blade 25
Is a hydraulic motor for driving the second cutting blade.

Then, the rear wall 10 of the reaping section frame 12
On the side opposite to the control part 7, the cylinders for adjusting the position of the take-up reel 15 such as the front-rear position adjusting cylinder 17 and the height adjusting cylinder 18 and the second cutting blade up and down for the second cutting blade 25. A hydraulic control unit 33 including a hydraulic valve for operating the hydraulic pressure of the cylinder 30, the second cutting blade driving hydraulic motor 31 for operating the second cutting blade 25, and the like is provided.
Is connected to the front-rear position adjusting cylinder 17 and the like by a hydraulic pipe 34, and a one-touch coupler 36 is provided at the other end of a connection hose 35, one end of which is connected to a hydraulic control unit 33, and the one-touch coupler 36 is provided on the machine body frame 1 side. Connect the connection hose connected to the hydraulic circuit.

That is, the control section 7 is provided on either the left or right side of the machine body frame 1, the transport elevator 13 is located on the side of the control section 7, and the tip of the transport elevator 13 is located at the rear wall of the reaping section frame 12. Since it is attached to the control unit 10, the hydraulic control unit 33 is provided on the side opposite to the control unit 7 (one side 4 in the embodiment) so that maintenance can be performed easily. The second cutting blade driving hydraulic motor 31 is also arranged in the vicinity of the hydraulic control unit 33 to facilitate piping.

Further, the bottom plate 3 of the transfer elevator 13
As shown in FIG. 5, when the mowing unit 8 is at the lower position,
The front part of the bottom plate 38 with respect to the middle part is formed to have a steep lower slope on the front side, and the rear part is formed to have a gentle slope. When the reaper 8 is moved upward when turning the machine body, the transport elevator 1
The rear side of the bottom plate 38 of No. 3 is configured to be steeply inclined toward the threshing device 3, and when the cutting unit 8 is moved up to the standby position for turning or the like, the transport elevator 1
The reaper 8 is moved upward until the rear side of the bottom plate 38 of No. 3 is steeply inclined. That is, a chain 55 is provided in the transport elevator 13, and slats 56 are provided at predetermined intervals on the chain 55. The slats 56 are made of metal in order to strengthen the transport force, and the upper surface of the bottom plate 38 and the slats 56 are formed. Since a gap is formed between the lower edge and the lower edge so that the lower edge does not come into contact with the lower edge, the grain culm conveyed by the slat 56 acts like a brush during the work to supply the grain shredded to the threshing device 3. , When the reaper 8 is moved up, there is no grain culm moving in the transport elevator 13, so the grains are returned to the reaper 8, so when the reaper 8 is moved up, the bottom plate 38 The grain is made to flow down to the threshing device 3 by steeply inclining. FIG. 8 shows slats 5.
6 is another embodiment.

Therefore, the first cutting blade 20 is the take-up reel 15
, But the posture of the grain culm is improved to ensure the mowing work. However, since the second mowing blade 25 mows the grain culm without such assistance, the mowing work may not be performed well,
The larger the height interval between the first cutting blade 20 and the second cutting blade 25, the more difficult the mowing by the second cutting blade 25 becomes.

Therefore, the operating speed of the second cutting blade 25 can be changed, and when the length of the grain culm to be cut by the second cutting blade 25 becomes long, the second cutting blade is proportionately increased. It is configured to increase the operating speed of the blade 25. In the embodiment, the control motor 39 for changing the angle of the swash plate inside the second cutting blade driving hydraulic motor 31 is provided, and the rotation speed of the output shaft of the second cutting blade driving hydraulic motor 31 can be changed, and the cutting unit is provided. 8
The height of the first cutting blade 20 is set to the height of the cutting unit 8 detected by the height detection sensor 40 for automatic cutting height control that causes the cutting work to be performed at the set height. 20
The control motor 39 is operated to change the speed of the second cutting blade-driving hydraulic motor 31 in accordance with the height. The height detection sensor 40 may be provided at a desired position such as the mowing unit 8 or the transport elevator 13, but in the embodiment, the potentiometer detects the angle of the transport elevator 13 with respect to the upper rotary shaft 22.

Since the height of the second cutting blade 25 can also be changed, the height of the second cutting blade 25 is not simply made to correspond to the height of the first cutting blade 20, but the ACH sensor 41 for the second cutting blade 25 (height detection sensor). ) Is used to detect the interval between the first cutting blade 20 and the second cutting blade 25, and the length of the grain culm to be cut by the second cutting blade 25 is determined based on this interval, and the corresponding Let the second blade 25
It may be configured to change the operating speed of the.

Reference numeral 42 denotes a wobble drive for transmitting the output of the second cutting blade driving hydraulic motor 31 to the second cutting blade 25, and 43.
Is an electromagnetic solenoid valve, and 44 is a driving motor for the discharge auger 45 that conveys the grains in the grain tank 5 to a truck or the like near the field.

12 to 16 show an embodiment in which the second cutting blade 25 is slidable in the left-right direction with respect to the mowing section frame 12, and the second cutting blade mounting frame 26 of the second cutting blade 25 is The mounting member 46 is slidably mounted on the mounting member 46 provided at the lower portion of the support rod 27 that constitutes the up-down link 29.
A slide cylinder 47 is provided between the second cutting blade mounting frame 26 and the second cutting blade mounting frame 26, and the second cutting blade 25 has the same left and right width as the first cutting blade 20. The uncut grain culms that are cut by the cutting blade 25 (FIG. 13) are slid (FIG. 14) so as not to be cut.

Then, the slide of the second cutting blade 25 is reset by interlocking with the operation of the power steering lever for operating the traveling device 2 so as to move to the right when turning left, and by the backward operation of the switch or the power steering lever. In some cases, it is configured to do so (FIG. 15).

FIG. 16 shows an example of the slide control unit 48 (FIG. 12). One side 49 is mounted on the second cutting blade mounting frame 26 on the moving side, and the other side 50 is mounted on the mounting member 4 on the fixed side.
6, the switch 51 is provided on either one of them, and the contact body 52 that comes into contact with one of the left and right switches 51 is provided on the other.

FIG. 17 shows an embodiment in which the second cutting blade mounting frame 26 of the second cutting blade 25 is constituted by a frame body 53, and the frame body 53 is slid. In FIG. 18, the second cutting blade mounting frame 26 of the second cutting blade 25 is configured by a frame body 53, and the frame body 53 is mounted on the mounting member 46 provided on the up / down link 29. Engaging holes (not shown) are formed, and selected ones of the engaging holes and the mounting member 46 are fixed by the pins 54.

FIG. 19 shows an embodiment relating to turning on and off of the operation of the second cutting blade 25. Reference numeral 60 is a CPU, 61 is a grain stem presence / absence detection sensor, and 62 is a hydraulic motor 31 for driving the second cutting blade. A solenoid valve for cutting is provided, and when the grain culm presence / absence detection sensor 61 detects that there is no grain culm, the second cutting blade 25 is stopped. The grain culm presence detection sensor 61
In the embodiment, the presence or absence is provided on the bottom plate 38 of the transport elevator 13 and the presence or absence is detected by the pressure of the grain culvert transported in the transport elevator 13, but the front side of the first cutting blade 20 or the first cutting blade 20 and It may be provided at a desired position such as between the second cutting blades 25. Reference numeral 63 denotes a reverse detection sensor, which stops the second cutting blade 25 when moving backward. Further, the second cutting blade 25 is stopped in conjunction with the operation of the HST lever 64 (Fig. 21).

Reference numeral 65 is a mission, and 66 is a hydraulic continuously variable transmission (HST). Next, the operation will be described. The present invention has the above-described configuration. When the machine body moves forward, the grass body 14 divides the grass, the scraping reel 15 scrapes the grain culm, and the first cutting blade 2
Only the ear tip side of the grain culm is mowed by 0, and the ear grain culm scraped into the mowing section frame 12 by the scraping reel 15 is transported by the auger 21 to the elevator 13 and the mowing section frame 12.
It joins with the attachment part of and is conveyed by the conveyance elevator 13 and sent to the threshing device 3 to thresh. Therefore, only the tip side of the grain culm is supplied to the threshing device 3, and the load on the threshing device 3 is reduced.

When the machine body is further advanced, the second cutting blade 25 is provided on the mowing section frame 12 behind the first cutting blade 20, so that the second cutting blade 25 is moved to the field by the first cutting blade 20. The uncut grain culms are cut off from the plant side. Then, on the side of the rear wall 10 of the reaper section frame 12 opposite to the control section 7, the front-back position adjusting cylinder 17 and the height adjusting cylinder 18 are provided.
Such as a cylinder for adjusting the position of the take-up reel 15, a second cutting blade up / down cylinder 30 of the second cutting blade 25, and a second cutting blade 2
5. A hydraulic control unit 33 is provided with a hydraulic valve or the like for operating the hydraulic pressure of the second cutting blade drive hydraulic motor 31 for operating 5, and the hydraulic control unit 33 and the front-back position adjusting cylinder 17, etc. A one-touch coupler 36 is provided at the other end of the connection hose 35 that is connected by a pipe 34 and one end of which is connected to the hydraulic control unit 33, and the one-touch coupler 36 is connected to a connection hose that is connected to the hydraulic circuit provided on the machine frame 1 side. Therefore, the control section 7 is provided on either the left or right side of the machine body frame 1, the transport elevator 13 is located on the side of the control section 7, and the tip of the transport elevator 13 is positioned at the rear wall of the reaping section frame 12. The hydraulic control unit 3 is attached to one side 4 opposite to the control unit 7.
3 can be provided, and maintenance can be easily performed.

When the reaping section 8 is removed from the transport elevator 13, the reaping section 8 can be removed from the transport elevator 13 by removing it at the one-touch coupler 36 without removing the hydraulic pipe 34 of each cylinder. Work becomes easy. Then, when the reaping unit 8 is moved upward when turning, the bottom plate 38 of the transport elevator 13 is configured such that the slope of the portion on the threshing device 3 side becomes steep. The shredded grains inside are guided by the steep inclination of the bottom plate 38 and all enter the threshing device 3, so loss is prevented.

Further, since the loss can be prevented as described above, since the metal slats 56 are provided in the chain in the transport elevator 13 with a gap so as not to contact the upper surface of the bottom plate 38, the slats 56 are provided. Prevents clogging by strengthening the conveyance power of. Then, since the second cutting blade 25 cuts the grain culm without the assistance of the take-up reel 15, it may not be possible to satisfactorily perform the cutting work, but the higher the height of the first cutting blade 20 is, the second cutting blade 25 is cut. Since the blade 25 is configured so that it can be actuated at high speed, it ensures the cutting of long remaining grain culms.

Further, the length of the remaining grain culm is based on the height detection sensor 40 for automatic cutting height control of the reaper 8, so that it can be implemented with a simple structure. Further, when the ACH sensor 41 (height detection sensor) for the second cutting blade 25 is used, the first cutting blade 20 works together with the height detection sensor 40.
The distance between the second cutting blade 25 and the second cutting blade 25 can be detected, and if the length of the grain culm to be cut by the second cutting blade 25 is determined based on this distance, the length of the remaining grain culm can be more accurately determined. It is possible to change the operating speed of the second cutting blade 25 by judging.

Therefore, the second cutting blade mounting frame 26 of the second cutting blade 25 is slidably mounted on the mounting member 46 provided at the lower portion of the support rod 27 which constitutes the up-and-down link 29, and the mounting member 46 and the second member. A slide cylinder 47 is provided between the two cutting blade mounting frames 26, and the second cutting blade 25 is the cutting unit frame 12.
Since the second cutting blade 25 is configured to have the same lateral width as the first cutting blade 20 because it is slidable in the left-right direction with respect to
Normally, even if the inner uncut grain culm is cut due to the difference in the inner ring, by sliding the second cutting blade 25,
There is no uncut culm on the inside, and there is no uncut residual culm when cutting straight.

Further, in the structure which is interlocked with the operation of the power steering lever for operating the direction of the traveling device 2, when the left turning operation is performed, the sliding cylinder 47 automatically moves the second cutting blade 25 to the right, and the slide control unit. 48, one switch 51
The contact body 52 comes into contact with the to stop the slide cylinder 47, and the slide cylinder 47 is operated so that the second cutting blade 25 is returned to the original state by the backward operation of the reset switch or the power steering lever, and the other switch is operated. 51
The contact body 52 comes into contact with and the slide cylinder 47 is stopped.

However, when the cutting unit 8 is moved upwards above a certain height due to turning or the like, the height detection sensor 40 detects this and the auger 21 and the transfer elevator 13 are not stopped, but the first cutting is performed. Stop the blade 20 and the second cutting blade 25,
The durability of the second cutting blade 25 is improved. Further, when the grain culm presence / absence detection sensor 61 is used instead of the height detection sensor 40, the grain culm presence / absence detection sensor 61 determines that the mowing operation is not performed, and stops the second cutting blade 25. Further, when the turning operation of the power steering lever is detected and the turning operation is detected, the second cutting blade 25 is stopped, and damage caused by the second cutting blade 25 sliding and biting a stone or the like during traveling of ridges, This is prevented by stopping the second cutting blade 25.

[0030]

[Effects] The present invention provides the traveling device 2 below the machine body frame 1.
A threshing device 3 provided on one side 4 upper position of the machine frame 1, a grain tank 5 provided on any other side 6 upper position of the machine frame 1, and in front of the grain tank 5. A control section 7 provided, a mowing section 8 provided at a front position of the control section 7, and a transportation elevator 13 located on the side of the control section 7 for connecting the mowing section 8 and the threshing device 3. The harvesting section 8 is a combiner provided with a take-up reel 15 capable of adjusting a position for scraping grain culms in a field and a first cutting blade 20 for cutting tips, and a rear part of the harvesting section 8. The second cutting blade 2 is provided with a second cutting blade 25 that lowers the residual culm after being cut by the first cutting blade 20.
5, the transport elevator 13 is arranged on the left side of the central portion of 5, and the second cutting blade 25 is supported via a parallel link and is vertically movable by a second cutting blade up-and-down cylinder 30. Since the second cutting blade up-and-down cylinder 30 is a combine harvester, which is arranged on the right side of the transport elevator 13, the upper part of the second cutting blade up-and-down cylinder 30 is opened. Since the space is provided, it is possible to easily attach and maintain the second cutting blade up / down cylinder 30.

Further, parallel links for supporting the second cutting blade 25 are provided on both left and right sides of the transfer elevator 13,
The second cutting blade up / down cylinder 30 is provided between the left and right parallel links, and the second cutting blade 25 is firmly and stable because the second cutting blade 25 is a harvesting part of the combine according to claim 1. The effect that can be supported.

[Brief description of drawings]

FIG. 1 is an overall side view.

FIG. 2 is a schematic plan view.

FIG. 3 is a side view of a reaper.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view showing an operating state.

FIG. 6 is a sectional view of a transfer elevator.

FIG. 7 is a side view of the mounting state.

FIG. 8 is a diagram showing an example of slats.

FIG. 9 is a side view of the reaper.

FIG. 10 is a block diagram.

FIG. 11 is a hydraulic circuit diagram.

FIG. 12 is a plan view of the reaper.

FIG. 13 is a conventional view of mowing work.

FIG. 14 is an embodiment diagram of the present invention.

FIG. 15 is a block diagram.

FIG. 16 is a plan view.

FIG. 17 is a rear view.

FIG. 18 is a rear view.

FIG. 19 is a block diagram.

FIG. 20 is a side view.

FIG. 21 is a hydraulic circuit diagram.

[Explanation of symbols]

1 ... Airframe frame, 2 ... Traveling device, 3 ... Threshing device, 4 ...
One side, 5 ... Glen tank, 6 ... Other side, 7 ... Control section, 8 ...
Mowing part, 9 ... Side wall, 10 ... Rear wall, 11 ... Bottom wall, 12 ... Mowing part frame, 13 ... Conveyor elevator, 14 ... Weeding body, 15 ... Take-up reel, 16 ... Mounting arm, 17 ... Front-rear position adjusting cylinder , 18 ... Cylinder for height adjustment, 20 ...
First cutting blade, 21 ... Auger, 22 ... Upper rotary shaft, 23 ...
Mowing unit vertical movement cylinder, 25 ... Second cutting blade, 26 ... Second cutting blade mounting frame, 27 ... Support rod, 28 ... Arm, 29 ...
Vertical link, 30 ... Second cutting blade vertical cylinder, 31 ...
Hydraulic motor for driving the second cutting blade, 33 ... Hydraulic control unit, 34
... hydraulic pipe, 35 ... connection hose, 36 ... one-touch coupler, 38 ... bottom plate, 39 ... control motor, 40 ... height detection sensor, 41 ... ACH sensor, 42 ... wobble drive, 43 ... electromagnetic solenoid valve, 44 ... for driving Motor, 45 ... Ejecting auger, 46 ... Mounting member, 47
... Slide cylinder, 48 ... Slide controller, 49 ...
One, 50 ... The other, 51 ... Switch, 52 ... Contact body, 5
3 ... Frame body, 54 ... Pin, 55 ... Chain, 56 ... Slat, 60 ... CPU, 61 ... Cereal culm presence detection sensor, 62
… Solenoid valve, 63… Reverse detection sensor, 64…
HST lever, 65 ... Mission, 66 ... Hydraulic continuously variable transmission.

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2B076 AA04 BA01 BB03 CA09 CA12                       CC02 DA06 DA15 DC01                 2B382 GA03 GA10 GB01 GC03 GC04                       GC22 GC25 GC26 GD02 HA01                       HA12 HB02 HC03 HF02 HF07                       HF16 HF27 HG05 HH03 LA03                       LA12 LA24 LA32 LB06 LC07                       LD05 MA29 MA38

Claims (2)

[Claims] 1. A traveling device 2 is provided below the machine body frame 1, and a threshing device 3 provided at an upper position on one side 4 of the machine body frame 1, and a threshing device 3 provided on an other side 6 of the machine body frame 1. The Glen tank 5 provided, the control section 7 provided in front of the Glen tank 5, the mowing section 8 provided in front of the control section 7, and the mowing section located on the side of the control section 7. 8 and the threshing device 3 are connected to each other, and a conveyor 13 for connecting the thresher 3 is provided. The cutting section 8 includes a take-up reel 15 for adjusting the position of the grain culm in the field, and a first cutting blade 20 for cutting tips. A combine cutting provided with a second cutting blade 25 at a rear portion of the cutting portion 8 for cutting low residual culm after being cut by the first cutting blade 20 from a central portion of the second cutting blade 25. The transfer elevator 13 is arranged on the left side, and the second cutting The blade 25 is supported via a parallel link, and is configured to be movable up and down by a second cutting blade up / down cylinder 30. The second cutting blade up / down cylinder 30 is arranged on the right side of the transport elevator 13. Combine harvester. 2. The parallel links for supporting the second cutting blade 25 are provided on both left and right sides of the transport elevator 13, and the second cutting blade up-and-down cylinder 30 is provided between the left and right parallel links. The harvesting part of the combine according to claim 1.