JP3486920B2 - Gearing of pre-processing unit in combine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission device for a pretreatment unit in a combine, and is used for a whole culm-type combine. 2. Description of the Related Art Conventionally, all-culm-type combine harvesters are provided with a first cutting blade and a second cutting blade in order to reduce the horsepower consumed during threshing as much as possible and to thresh more efficiently. Only one portion of the upper part of the grain stalk near the spike is cut off by one cutting blade and supplied to the handling room by the conveyor, and the remaining root portion is cut off by the second cutting blade and left in the field scene. According to this configuration, the threshing machine is capable of efficiently threshing because it consumes less horsepower for threshing because the amount of grain culm supplied into the handling room is limited. [0003] In this case, the second cutting blade is provided below the rear part of the pretreatment device, and it is necessary to adjust the cutting height up and down in order to cut the remaining culm of the field which the first cutting blade has left uncut. ,
It may be adjusted up and down frequently or lifted to a stowed position when not working. There was a problem that the transmission configuration of this was complicated. Also, the second cutting blade is driven.
Hydraulic motor and discharge spiral device installed in the Glen tank
Operate the hydraulic motor to be driven with a single operation lever
There was nothing. In addition, a single operating lever is
When operated on the side that drives the
And the second blade is based on the detection result of the ground-type cutting height sensor.
Work while being automatically maintained at the specified cutting height.
When the single operating lever is returned to the neutral position, the
And the second cutting blade moves to the upper
Nothing was configured to rise dynamically. [0004] Therefore, in this type of combine, the transmission mechanism to the second cutting blade is made as simple as possible so that the cutting height can be adjusted during work and the storage position after work. There is a demand for a device that can easily move the vehicle. In particular, as described in the section of the prior art, since the second cutting blade needs to be frequently moved up and down, it is necessary to make the power transmission configuration as simple as possible and at a low cost. Accordingly, the present invention is to solve the problem as follows. That is, when the second cutting blade is driven by using a hydraulic motor, the grain discharging operation may be performed only when the second cutting blade is not used.
The transmission configuration is rationally reduced by configuring the hydraulic circuit so that these two hydraulic motors can be driven by one hydraulic pump. In addition, a hydraulic motor for driving the second
Hydraulic motor that drives the discharge spiral device installed in the ren tank
Operation with a single operation lever to improve operability.
Movement of the second cutting blade between the working state and the stored state.
They are going to do it. [0006] The present invention takes the following specific technical means in order to solve the above-mentioned problems. That is, a threshing machine 3 and a grain tank 4 are mounted and provided on a chassis 2 having a traveling device 1, and a reel 5, a first cutting blade 6, -Ga 7
And a pre-cutting device 9 comprising a grain culm conveying conveyor 8 are provided so as to be vertically movable freely, and the pre-cutting device 9 has a second cutting device capable of adjusting the vertical movement with respect to the first cutting blade 6. A blade 10, and a hydraulic motor 12 that moves up and down together with the second cutting blade 10. The second cutting blade 10 is configured to be driven by the hydraulic motor 12. And a hydraulic motor 13 for driving the discharge spiral device 11 provided in the Glen tank 4 and a hydraulic motor 13 for driving the discharge spiral device 11 mounted in the Pump 14
To one side via the switching valve 26
Drive valve and operate the switching valve 26.
A single operating lever 27 is provided.
When operating the second cutting blade 10 by operating the relief valve
Increase the valve pressure and change the drive torque with 28
And further operate the side to drive the second cutting blade 10.
The automatic switch 29 is turned on, and the second cutting blade
10 is predetermined according to the detection result of the ground-type cutting height sensor 47
That the work is performed while automatically maintaining the cutting height of
When the operation lever 27 is returned to the neutral position, the automatic switch
Switch 29 is in the cut state, and the second cutting blade 10 is stored in the upper part.
A transmission device for a pre-processing unit in a combine, characterized in that it is configured to automatically ascend to a position.
It is. First, the configuration will be described. Chassis 2
The vehicle has a traveling device 1 composed of a crawler, on which a threshing machine 3 is mounted on one side of an upper surface and a Glen tank 4 is mounted on the other side in a parallel state in plan view. Then, the threshing machine 3 forms an all-culm loading type handling chamber 17 in which a handling drum 16 is mounted along the traveling direction of the undercarriage 2, and a sorting chamber 19 in which a swing sorting shelf 18 is hung below the handling chamber 17. Is composed. The threshing machine 3 is configured to be able to thresh grain culms supplied from the cereal stem supply port 20 provided on the front side in the handling room 17. Glen tank 4 is threshing machine 3
The first kernel, which has been threshed and sorted, is stored, and when the stored kernel reaches a predetermined amount, it is discharged to the outside using the discharge spiral device 11. The cutting pre-processing device 9 includes a weeding rod 2 from the front.
1, a reel 5, a first cutting blade 6, a scraping auger 7, and a grain culm conveyor 8 are integrally mounted on a reaper frame 22. It is connected to and configured. The weeding rod 21 is attached to the reaper frame 22.
At the forefront low position, so that the culm in the field is planted with the advance. The first cutting blade 6 is provided behind the weeding rod 21 of the reaper frame 22 so as to cut the culm. The first cutting blade 6 is configured to move to a high cutting position in a state where the pre-cutting device 9 is slightly lifted upward, and cuts an upper part of a grain culm in a field. The reel 5 is rotatably supported above the first cutting blade 6 so as to be driven and rotatable, and scrapes the grain culm in the field that has reached the range of the left and right weeding rods 21 in the direction of the first cutting blade 6. It is configured as follows. The scraping auger 7 has, on its outer peripheral surface, a transport spiral 24 for transporting the harvested grain stalk to one side, and a scraping finger 25 for scraping the collected grain stalk backward, The shaft is mounted laterally behind the first cutting blade 6. The grain culm conveyor 8 comprises a conveyor belt capable of conveying grain culm. The conveyor belt 8 has a starting end facing the scraping finger 25 of the scraping auger 7 and a terminating end facing the handling chamber 17. It is configured so as to face the cereal stem supply port 20. The second cutting blade 10 is provided at a rear portion of the reaper frame 22 so as to be able to adjust the vertical movement of the first cutting blade 6. The second cutting blade 10 includes a hydraulic motor 12
And the discharge spiral device 11 can be driven by
It is configured to be driven by being equipped with a hydraulic motor 13.
The two hydraulic motors 12 and 13 are connected by a single hydraulic pump 14 to a switching valve 2 like a hydraulic circuit 15 shown in FIG.
The circuit can be driven by feeding oil to one of the two sides via the same. That is, in FIG. 1, when the operation lever 27 is operated in the left direction (in the direction opposite to the arrow A), the operation lever 27 is fed to the hydraulic motor 13 via the valve C to be driven, and transmits the discharge spiral device 11. And the opposite direction (the direction of arrow a)
, The oil is fed to the hydraulic motor 12 via the valve A and driven to drive the second cutting blade 10. The relief valve 28 is provided with the operation lever-2.
The valve pressure is changed in conjunction with the operation of No. 7, and in the configuration of the embodiment, when driving the second cutting blade 10, the valve pressure is increased and the driving torque can be changed. Another configuration of the combine having the above-described configuration will be described. As described above, the operation lever 27 is a single lever.
The second cutting blade 10 can be driven or the discharge spiral device 11 can be driven in connection with the front-back operation. As shown in FIG. 4, the operation lever 27 can turn on the automatic switch 29 when the operation lever 27 is operated to drive the second cutting blade 10. In the second cutting blade 10, the automatic switch 29 is turned on.
, The automatic height control device starts to operate and the cutting height is automatically controlled.
When the switch 7 is returned to the neutral (solid line in FIG. 4) position, the automatic switch 29 is turned off so that it can be raised to the upper storage position. Reference numeral 45 denotes a controller, 46 denotes a non-contact type cutting pre-processing unit sensor, and 47 denotes a grounding type cutting height sensor. In the configuration of this embodiment, the second cutting blade 1
In the case of 0, when the switching valve 26 is switched to the valve A by the operation of the operation lever 27, the automatic switch 29 is turned on by the lever 27 and the automatic control of the cutting height is started. Therefore, when the automatic control is started, the second cutting blade 10 descends from the upper storage position to reach the cutting position, and is ready for operation. Another structure of the combine having the above structure will be described. A description will be given based on FIGS. The cutting tension clutch device 30 is provided with a tension pulley 35 on a transmission belt 34 wound between the pulley 32 of the transmission box 31 and the pulley 33 on the first cutting blade 6 side. 6 for intermittent transmission operation. And, the reel tension clutch 36 is connected to the transmission box 3.
A tension pulley 41 is provided on a transmission belt 40 wound between a pulley 37 and a pulley 39 mounted on the base of a reel arm 38 to transmit power to the reel 5. Is intermittent. The clutch lever 42 is connected to the aforementioned 2
The tension pulleys 35 and 41 are connected to each other via an operation wire 43 so that the clutch is turned off in an upright state.
n. And the clutch lever
Reference numeral 42 is arranged below the reel arm 38 so that when the reel 5 is lowered to the working position, the clutch can be operated by pressing the reel arm 38 to the on state. I have. Reference numeral 48 denotes a hydraulic cylinder which is configured to move the reel 5 up and down. Next, the operation will be described. First, when the prime mover is started to drive the rotating parts of the fuselage and the operating lever 27 is operated in the direction of arrow A (see FIG. 1), the valve A of the switching valve 26 communicates with the pump passage and the hydraulic pump 14 To hydraulic motor 1
The oil is fed to the tank 2 and started. Then, the second cutting blade 10
While being driven by the hydraulic motor 12, the automatic switch 29 is turned on to move from the stowed position to the working position to be ready for working. Next, when the cutting and threshing operation is started while the undercarriage 2 is advanced, the culm in the field is sown by the weeding rod 21 at the front and the first mowing at the rear of the rotating reel 5. Blade 6
It is scraped to the side and cut off. In this manner, the harvested cereal stem reaches the rotating scraping auger 7 that is sent rearward, is sequentially sent to one side by the transport spiral 24 and is collected, and is collected by the scraping fingers 25. Reach. Next, the culm is rubbed with its scraped finger-25.
Is fed to the starting end of the grain culm conveyor 8 and conveyed upward. In this way, the cereal culm is supplied to the handling chamber 17 from the end portion of the cereal culm conveyor 8, reaches the rotating handling drum 16, is threshed, leaks to the sorting chamber 19, and is sorted. Things. The grains are continuously conveyed to and stored in the Glen tank 4 for continuous operation. During the operation as described above, the pre-cutting device 9 is automatically held while being positioned at a predetermined height and thereafter detecting the height from the field scene by the pre-cutting portion sensor 46. On the other hand, the second cutting blade 10 performs an operation while automatically maintaining a predetermined cutting height by the control action of the controller 45 based on the detection result of the cutting height sensor -47. The first cutting blade 6 is positioned at a high cutting position in order to reduce the amount of grain culm supplied to the handling room 17.
The second cutting blade 10 works while controlling the position of the second cutting blade 10 at a low position so as to shorten the stubble. Second cutting blade 1
0 is frequently moved up and down with respect to the pre-cutting device 9 in accordance with the cutting height control. However, since the hydraulic motor 12 is integrally mounted, the transmission structure is very simple. The vertical movement can be smoothly performed while maintaining the driving state. When the harvesting and threshing operation is continuously performed as described above and the grain in the Glen tank 4 reaches a predetermined amount,
Move on to the operation of discharging the grains, at which time the operation lever
27 is operated in the direction opposite to the arrow A. Then
The discharge spiral device 11 is driven by the valve C of the switching valve 26 communicating with the hydraulic pump 14 to start oil supply to the hydraulic motor 13 and is transmitted through the hydraulic motor 13. You. Therefore, the grains in the Glen tank 4 are
It is transported by a series of rotating discharge spiral devices 11 and sent out of the machine. As described above, according to the present invention, a threshing machine 3 and a Glen tank 4 are mounted and provided on a chassis 2 having a traveling device 1, and a threshing machine 3 is provided at a front portion thereof. Reel 5 and the first
A cutting pretreatment device 9 comprising a cutting blade 6, a scraping auger 7, and a grain culm conveyor 8 is provided so as to be freely vertically connected and lowered.
The cutting pre-processing device 9 is provided with a second cutting blade 10 that can be moved up and down with respect to the first cutting blade 6, and further provided with a hydraulic motor 12 that moves up and down with the second cutting blade 10. The second cutting blade 10 is configured to be driven by the hydraulic motor 12, and a hydraulic motor 13 for driving a discharge spiral device 11 provided in the Glen tank 4 is provided.
A hydraulic motor 12 for driving the cutting blade 10;
Hydraulic motor 13 for driving the discharge spiral device 11 mounted on the
From one hydraulic pump 14 via a switching valve 26
Oil is sent to one side or the other side to drive, and
A single operating lever 27 for operating the switching valve 26 is provided.
Operating the operating lever 27 to drive the second cutting blade 10
To increase the valve pressure with the relief valve 28
To change the driving torque, and
When operated to drive the blade 10, the automatic switch 29 is activated.
And the second cutting blade 10 is a ground-type cutting height sensor.
The specified cutting height is automatically maintained based on the 47 detection results.
The operation lever 27 is set to the middle position.
When returned to the upright position, the automatic switch 29 is turned off.
The second cutting blade 10 will automatically rise to the upper storage position.
As a transmission of the pre-processing unit in the combine, characterized in that the second cutting blade 10
This is because the hydraulic motor 12 moves up and down as a unit even if the transmission configuration is simplified and the frequent movement of the hydraulic motor 12 with respect to the reaping pre-processing device is accompanied by the control of the reaping height. Sum - will be able to's, and the second
Discharge spiral device 11 mounted on cutting blade 10 and Glen tank 4
Since the power transmission configuration is simplified, maintenance can be easily performed. Also, the second operating blade 27 is
Configuration for switching between driving of drive 10 and driving of discharge spiral device 11
, The mowing work is performed by driving the second mowing blade 10.
In the state where it is in the wrong state,
Can be prevented. When the second cutting blade 10 is driven,
Pressure valve 28 to increase the valve pressure.
Therefore, the driving torque of the second cutting blade 10 can be increased.
In this case, the cutting performance of the grain stem is improved. In addition,
Operate the operating lever 27 to start driving the second cutting blade 10.
Automatically control the holding of the cutting height of the second cutting blade 10
When the operation lever 27 is returned to the neutral position,
0 automatically rises to the upper storage position.
Easy and quick movement of blade 10 to working position and storage position
Work efficiency and work efficiency.
You.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a hydraulic circuit according to an embodiment of the present invention. FIG. 2 is a side view showing one embodiment of the present invention, showing a part in section. FIG. 3 is a plan view of a part of the embodiment of the present invention. FIG. 4 is an operation side view of a part of the embodiment of the present invention. FIG. 5 is a block circuit diagram of one embodiment of the present invention. FIG. 6 is a plan view showing another embodiment of the present invention. FIG. 7 is a side view showing another embodiment of the present invention. [Description of Signs] 1 ... traveling device, 2 ... chassis, 3 ... threshing machine, 4 ... Glen tank, 5 ... reel, 6 ... first cutting blade, 7 ... scraping auger, 8 ...
Grain culm conveyor, 9: pre-cutting device, 10: second cutting blade, 11: discharge spiral device, 12: hydraulic motor, 13: hydraulic motor, 14: hydraulic pump, 15: hydraulic circuit , 26 …
Switching valve, 27 ... Operation lever, 28 ... Relief valve
29, automatic switch, 47: cutting height sensor.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-60516 (JP, A) JP-A-4-129741 (JP, U) JP-A-2-92323 (JP, U) JP-A-2-93 92943 (JP, U) Shokai Sho 57-65041 (JP, U) Shokai Hei 5-31523 (JP, U) Shokai Hei 5-65937 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) A01D 34/02-34/408

Claims (1)

(57) [Claims 1] A threshing machine 3 on a chassis 2 having a traveling device 1
And a grain tank 4 mounted thereon, and a mowing comprising a reel 5, a first cutting blade 6, a scraping auger 7, and a grain culm conveyor 8 at the front of the threshing machine 3. A pre-processing device 9 is provided so as to be freely movable up and down.
A second cutting blade 10 that can be moved up and down with respect to the cutting blade 6 is provided, and a hydraulic motor 12 that moves up and down together with the second cutting blade 10 is provided. And a hydraulic motor 13 for driving the discharge spiral device 11 provided in the Glen tank 4, and for driving the second cutting blade 10.
2 and the hydraulic motor 13 for driving the discharge spiral device 11 mounted on the Glen tank 4 is switched from one hydraulic pump 14
Oil is sent to one side via valve 26 and driven
And a single actuation of the switch valve 26
The operating lever 27 is provided, and the operating lever 27 is operated.
When driving the second cutting blade 10, the relief valve 28 is used.
To increase the valve pressure and change the drive torque
Then, when further operated to the side to drive the second cutting blade 10
The automatic switch 29 is turned on, and the second cutting blade 10 is connected.
Based on the detection result of the ground type cutting height sensor 47, a predetermined cutting height
Work while automatically maintaining the
When the operation lever 27 is returned to the neutral position, the automatic switch 29
Is cut, and the second cutting blade 10 is moved to the upper storage position.
A transmission for a pre-processing unit in a combine, wherein the transmission is configured to rise automatically .