JP2009232687A - Control device for threshing-reaping clutch of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of a conventional combine harvester, wherein a compromise for laying out levers and switches in a limited space around a driver' seat under the considerations of operability and operation frequency of the levers and the switches has been forced, because switch operations are performed with a threshing-reaping clutch lever which is swung in longitudinal or lateral directions. <P>SOLUTION: The control device for threshing-reaping clutch of the combine harvester is characterized in that both of a threshing clutch (32) and a reaping clutch (47) are controlled in engaged states by operating one switch (SW1) in a state that both of the threshing clutch (32) and the reaping clutch (47) are disengaged; and the threshing clutch (32) alone is controlled in an engaged state by controlling both of the threshing clutch (32) and the reaping clutch (47) in engaged states and controlling the other switch (SW2) in a state that both of the threshing clutch (32) and the reaping clutch (47) are disengaged. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a threshing clutch mounted on a combine and a threshing clutch for intermittently transmitting power to a reaping device and a control device for the reaping clutch.

Conventionally, a threshing / reaping clutch lever is provided on an operation panel provided in a driving operation unit of a combine, and a control device drives an electric motor to detect a threshing clutch and a lever by detecting a lever position operated by an operator with a plurality of switches. One that intermittently operates a mowing clutch is known (for example, see Patent Document 1).
JP 2006-77959 A

However, in the conventional one, the switch operation is performed by the threshing / cutting clutch lever that swings back and forth and left / right, so the movement trajectory of the threshing / cutting clutch lever is large, and the other is in a limited space around the driver's seat This greatly restricted the layout of the levers and switches.
In addition, even during work, the pre-processing section is controlled so that the pre-processing section automatically stops when the pre-processing is raised, so the threshing / cutting clutch lever is operated less frequently, but costs are high. It was. In addition, it takes time to adjust the switch with respect to the lever position during assembly.
An object of the present invention is to improve the above conventional problems.

A threshing unit that is driven by the power of the engine via the threshing clutch, a pre-processing unit that is driven by the power of the engine via the reaping clutch, and a driving operation unit that is operated are mounted on the fuselage. In a combine threshing / harvesting clutch control device having a control device for controlling the actuator for switching the threshing clutch and the intermittent state of the reaping clutch by operating the threshing / reaching clutch operating means. The means is composed of two switches, and by operating one of the switches while both the threshing clutch and the mowing clutch are disconnected, both the threshing clutch and the mowing clutch are controlled to be in the connected state. By operating one switch again, the threshing clutch and mowing By controlling both of the clutches to the disengaged state and operating the other switch while both the threshing clutch and the mowing clutch are disengaged, only the threshing clutch is controlled to be in the connected state, and the other switch from that state again. By controlling the threshing clutch, the threshing clutch is controlled to be in the disconnected state, and by operating one switch while only the threshing clutch is connected, the cutting clutch is controlled to be in the connected state while maintaining the connected state of the threshing clutch. At the same time, only the harvesting clutch is controlled to be in a disconnected state by operating the other switch from that state.
In addition, a cutting indicator is juxtaposed on one side of the switch of the threshing / cutting clutch operating means, and a cutting indicator is juxtaposed on the side of the cutting indicator on the other side of the threshing / cutting clutch operating means, and the threshing indicator is cut off. It is arranged between the indicator and the off indicator.
Further, the threshing / reaping clutch operating means is constituted by a seesaw type operating means that returns to a neutral position when not being operated.

By adopting the above configuration, the threshing / reaping clutch operating means with good operability can be laid out in a limited space of the driving operation section, and the mechanical configuration of the threshing / reaping clutch lever can be omitted. Along with the reduction in assembly man-hours, the cost was effectively reduced.
In addition, according to the threshing / cutting clutch operating means with good operability, the indicator indicating the cutting work possible state, the hand handling work possible state, and the work impossible state can be laid out in an easy-to-understand manner.
Further, by adopting a seesaw type operating means as the threshing / reaping clutch operating means, the threshing / cutting clutch operating means can be easily operated by searching for the surrounding operating means, and the threshing clutch of the threshing / reaping clutch operating means. Discrimination between the operation position and the mowing clutch operation position can be easily performed by searching.

Next, one embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an overall right side view of the combine, and FIG. 2 is a plan view of the operation section of the combine.
The combine 1 is provided with a pre-processing unit 2 that cuts stems and stems in front of the fuselage so that the stems can be raised and lowered. 3)), a post-processing unit 5 for discharging the threshed waste is disposed at the rear, a driving operation unit 6 on which the operator is boarded is disposed on the right front side, and the rear is selected. A grain tank 7 for storing the grain is arranged, and the upper part of the vertical discharge cylinder 8 connected to the lower rear part of the grain tank 7 is stored in the grain tank 7 so that it can be swung and moved up and down with respect to the machine body. A discharge tube 9 for discharging the grains to the outside of the machine is arranged, and the left and right crawler running sections 10 are provided at the lower part of the machine body.

  The driving operation unit 6 includes a driving seat 11 on which an operator sits. A front panel 12 disposed in front of the driving seat 11 is operated in the left-right direction to steer the aircraft to the left and right, and operate in the front-rear direction. A multi-steering lever 13 that moves the pre-processing unit 2 up and down is provided, and a side panel (operation panel) 15 that is disposed on the left side of the driving seat 11 has a main shift that shifts the traveling speed in a stepless manner. The left side of the lever 16 and the main transmission lever 16 is a sub-transmission lever 17 for shifting the traveling speed in two steps depending on the work purpose and cutting conditions, and the rear of the sub-transmission lever 17 is an engine for adjusting the engine speed. Various switch groups 21 are provided behind the control lever 19 and the main transmission lever 16.

FIG. 3 is a transmission diagram of the main part of the combine, and FIG. 4 is a right side view of the transport transmission.
The power of the engine 23 provided in the fuselage is input to the traveling HST 26 via the belt 25, and the output of the traveling HST 26 that is steplessly shifted by the operation of the main transmission lever 16 provided in the driving operation unit 6 is the traveling transmission 27, left and right Is transmitted to the left and right crawler travel parts 10 via the drive sprocket 28 to drive the aircraft forward and backward.
The power of the engine 23 is input from the engine pulley 29 to the work machine input pulley 33 via the transmission belt 31 and the threshing clutch 32, and is transmitted from the work machine input pulley 33 to the preprocessing unit 2 side and to the threshing unit 3 side. The power is branched to the transmission.

The transmission on the threshing unit 3 side is transmitted to the handling cylinder 35, the processing cylinder 36, and the waste straw conveying unit 37, and is also transmitted to the post-processing unit 5 side through the sorting unit.
Further, the transmission on the preprocessing unit 2 side is input to the transport HST 42 via the transport transmission 41. Then, the operation position of the main transmission lever 16 provided in the driving operation unit 6 is detected by a potentiometer, and the electric motor connected to the trunnion shaft of the transport HST 42 is controlled according to the detected operation position of the main transmission lever 16 to incorporate the microcomputer. Infinitely controlled by the device. The output of the transport HST 42 that has been steplessly transmitted is transmitted to the threshing feed chain 43 via the transport transmission 41 and from the transport output pulley 45 to the preprocessing input pulley of the preprocessing unit 2 via the transmission belt 46 and the cutting clutch 47. It is transmitted to 49.
Reference numeral 51 denotes an electric motor (actuator) for switching between the threshing clutch 32 and the reaping clutch 47. The electric motor 51 supports a threshing tension pulley 53 constituting the threshing clutch 32 via a threshing clutch link mechanism 52 so as to be swingable. It is connected to a threshing tension arm 55 and connected to a reaping tension arm 58 that rotatably supports a reaping tension pulley 57 constituting the reaping clutch 47 via a reaping clutch link mechanism 56.

FIG. 5 is a plan view of various switches in the driving operation unit.
Reference numerals 61, 62, and 63 denote tactile switches that constitute a horizontal automatic control changeover switch, a direction automatic control changeover switch, and a saw depth automatic control changeover switch, respectively, on the right side of the changeover switches 61, 62, and 63 (the aircraft traveling direction). On the front side, LEDs 65, 66, and 67 that constitute indicators for displaying the operation state of automatic control are provided.
Further, a selector switch 69 with a dial for automatic selection control and a selector switch 71 with a dial for turning control are provided below the selector switches 61, 62, 63 (on the right side in the aircraft traveling direction). An LED 72 that constitutes an indicator for displaying the operation state of the control is provided (on the left side in the aircraft traveling direction).
Further, the right side of the changeover switches 61, 62, 63 and the changeover switches 69, 71 with dials (the front side in the aircraft traveling direction) is a seesaw type constituted by a cutting switch (cutting clutch operating means) SW1 and a threshing switch (threshing clutch operating means) SW2. A switch (threshing / cutting clutch operating means) 75 is provided, and LEDs 76, 77 constituting an indicator for displaying the intermittent state of the threshing clutch 32 and the cutting clutch 47 on the left side of the seesaw type switch 75 (the rear side in the aircraft traveling direction). 79 are provided.

FIG. 6 is a diagram illustrating the operation of the threshing clutch and the mowing clutch (both clutches are disengaged), FIG. 7 is a diagram illustrating the operation of the threshing clutch and the mowing clutch (only the threshing clutch is connected), and FIG. It is a figure (both clutch connection state).
The intermittent action of the threshing clutch 32 and the reaping clutch 47 will be described with reference to FIGS.
First, when switching only the threshing clutch 32 from the state where both the threshing clutch 32 and the reaping clutch 47 in FIG. 6 are switched to the connected state, the pinion gear 81 that drives the electric motor 51 and is fixed to the motor shaft is shown in FIG. 6A, the threshing clutch link mechanism 52 and the threshing tension arm 55 are moved in the direction of FIG. 6A by rotating the sector gear 82 in the direction of FIG. 6A, and the transmission belt 31 is tensioned by the threshing tension pulley 53 (FIG. 7). Status). The drive of the electric motor 51 is controlled by a control device equipped with a microcomputer so that the operation amount of the sector gear 82 is detected by a potentiometer 83 and the electric motor 51 is stopped when a preset position is detected.

Next, when switching only the threshing clutch 32 of FIG. 7 to the connected state of the reaping clutch 47, when driving the electric motor 51 and rotating the pinion gear 81 fixed to the motor shaft in the direction of FIG. The cutting gear link mechanism 56 and the cutting tension arm 58 are moved in the direction of FIG. 7A by rotating the sector gear 82 in the direction of FIG. 7A, and the transmission belt 46 is tensioned by the cutting tension pulley 57 (state of FIG. 8).
Since the threshing clutch 32 and the cutting clutch 47 are disconnected in the reverse of the connection drive, the sector gear 82 is obtained when the pinion gear 81 fixed to the motor shaft by driving the electric motor 51 is rotated in the direction b in FIGS. 7 and 8, the clutch link mechanisms 52 and 56 and the tension arms 55 and 58 are moved in the direction B of FIGS. 7 and 8, respectively, so that the tension pulleys 53 and 57 are transmitted. Separated from the belts 31 and 46.

FIG. 9 is a control timing chart of the threshing clutch and the reaping clutch by the reaping switch operation and the threshing switch operation.
The initial state is an inoperable state in which the threshing clutch 32 and the reaping clutch 47 are disconnected while the machine is stopped, and the cut LED 79 on the left side of the seesaw type switch 75 is lit in red. Hereinafter, description will be made with reference to FIG.
First, when the cutting switch SW1 is operated while traveling is stopped, the electronic buzzer issues a single sound, the cut LED 79 is turned off and the cutting LED 76 is lit in green, and the threshing clutch 32 and the cutting clutch 47 are connected by driving the electric motor 51. Then, the cutting operation becomes possible. When the cutting operation is possible, the preprocessing unit 2 and the threshing feed chain 43 are linked to the vehicle speed. Therefore, if the machine is running, the preprocessing unit 2 and the threshing feed chain 43 start to drive at a speed according to the vehicle speed. However, since the aircraft is stopped here, it will stop in conjunction.
When the reaping switch SW1 is operated again, the electronic buzzer issues a single sound, the reaping LED 76 is extinguished and the disconnecting LED 79 is lit red, and the mowing threshing clutch 32 and the reaping clutch 47 are disconnected by driving the electric motor 51. It becomes impossible to work.

Next, when the threshing switch SW <b> 2 is operated, the electronic buzzer issues a single sound, the cut LED 79 is turned off, the threshing LED 77 is lit in orange, and the threshing clutch 32 is connected by driving the electric motor 51. At the same time, the conveyance HST 42 is controlled to be driven at a constant speed, so that the threshing unit 3 is driven and the threshing feed chain 43 is rotated at a constant speed so that it can be handled.
When the cutting switch SW1 is operated, the electronic buzzer notifies a single sound, the threshing LED 77 is turned off, the cutting LED 76 is lit in green, and the cutting clutch 47 is connected by driving the electric motor 51. At the same time, the conveyance HST 42 is stopped, so that the threshing feed chain 43 is also stopped and a cutting operation is possible. In the state where the cutting operation is possible, the preprocessing unit 2 and the threshing feed chain 43 are in a vehicle speed interlocking state, so that when the airframe is stopped, the preprocessing unit 2 and the threshing feed chain 43 are interlocked.
When the main transmission lever 16 is operated forward in this state, the transport HST 42 is driven to change gears in conjunction with the vehicle speed, so that the preprocessing unit 2 and the threshing feed chain 43 are also driven in conjunction with the vehicle speed.

Next, when the threshing switch SW2 is operated from this state, the electronic buzzer issues a single sound, the reaping LED 76 is extinguished and the threshing LED 77 is lit in orange, and the reaping clutch 47 is disconnected so that the transport HST 42 is independent of the vehicle speed. By shifting to the constant speed rotation, the preprocessing unit 2 stops, and the threshing feed chain 43 is also shifted to the constant speed rotation so that the hand-working operation is possible. Therefore, when the vehicle speed is high, the conveyance HST 42 is controlled to be decelerated, and when the vehicle speed is low, the conveyance HST 42 is controlled to increase.
When the threshing switch SW2 is operated again, the electronic buzzer issues a single sound, the threshing LED 77 is turned off, the cut LED 79 is lit in red, and the threshing clutch 32 is disconnected to stop the transport HST 42, whereby the threshing unit 3 And the threshing feed chain 43 also stops and becomes inoperable.
Thus, when performing the cutting operation, it is possible to quickly shift to the cutting operation state by operating only the cutting switch SW1 without operating both the threshing switch SW2 and the cutting switch SW1, and similarly, it is possible to quickly shift to the inoperable state as well. Therefore, work can be performed efficiently.
Similarly, when performing a handling operation, it is possible to quickly shift between a handling operation state and an inoperable state only by operating the threshing switch SW2.
Moreover, it is possible to quickly shift from the hand-working state to the cutting state only by the operation of the cutting switch SW1, and conversely, from the cutting state to the hand-operating state, the operation can be quickly performed only by the operation of the threshing switch SW2. Can migrate

  In this embodiment, the reaping switch SW1 and the threshing switch SW2 are configured by the seesaw type switch 75, but the present invention is not limited to this, and both switches may be configured by tact switches.

It is a whole right side view of a combine. It is a drive operation part top view of a combine. It is a principal part transmission diagram of a combine. It is a right view of a conveyance transmission. It is various switch group top views of a driving | operation operation part. It is action | operation explanatory drawing (both clutch disengaged state) of a threshing clutch and a mowing clutch. It is action | operation explanatory drawing (only a threshing clutch is a connection state) of a threshing clutch and a mowing clutch. It is action | operation explanatory drawing (both clutch connection state) of a threshing clutch and a mowing clutch. It is a control timing chart figure of the threshing clutch by the reaping switch operation and the threshing switch operation, and the reaping clutch.

Explanation of symbols

2 Pre-processing unit 3 Threshing unit 6 Driving operation unit 23 Engine 32 Threshing clutch 47 Mowing clutch 51 Actuator (electric motor)
75 Threshing / reaping clutch operating means (seesaw type operating means)
76 Cutting indicator 77 Threshing indicator 79 Cutting indicator SW1 Switch SW2 Switch

Claims (3)

A threshing portion (3) driven by the power of the engine (23) via the threshing clutch (32), a pretreatment portion (2) driven by the power of the engine (23) via the cutting clutch (47), and driving A driving operation unit (6) to be operated is mounted on the aircraft,
A threshing / reaping clutch operating means (75) is provided in the driving operation section (6),
In the combine threshing / cutting clutch control device including the control device for controlling the threshing clutch (32) and the actuator (51) for switching the intermittent state of the cutting clutch (47) by operating the threshing / cutting clutch operating means (75),
The threshing / reaping clutch operating means (75) is composed of two switches (SW1, SW2),
By operating one switch (SW1) while both the threshing clutch (32) and the reaping clutch (47) are disconnected, both the threshing clutch (32) and the reaping clutch (47) are controlled to be connected. And, by operating one switch (SW1) again from that state, both the threshing clutch (32) and the mowing clutch (47) are controlled to the disconnected state,
By operating the other switch (SW2) in a state where both the threshing clutch (32) and the reaping clutch (47) are disconnected, only the threshing clutch (32) is controlled to be in the connected state, and from that state, the other is again started. The threshing clutch (32) is controlled to be in a disconnected state by operating the switch (SW2) of
By operating one switch (SW1) in a state where only the threshing clutch (32) is connected, the cutting clutch (47) is controlled to be in a connected state while maintaining the connected state of the threshing clutch (32). By operating the other switch (SW2) from the state, only the harvesting clutch (47) is controlled to be in the disconnected state.   A cutting indicator (76) is juxtaposed on the side of one switch (SW1) of the threshing / cutting clutch operating means (75), and a cutting indicator on the side of the other switch (SW2) of the threshing / cutting clutch operating means (75). The cutting indicator (79) is juxtaposed on the (76) side, and the threshing indicator (77) is arranged between the cutting indicator (76) and the cutting indicator (79). Threshing / reaping clutch control device.   The combine threshing / cutting clutch according to claim 1 or 2, characterized in that the threshing / cutting clutch operating means (75) comprises a seesaw type operating means (75) that returns to a neutral position when not being operated. Control device.

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