JP2001209449A - Operation device for mobile agriculture machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven operation device that can select an accurate operational position. SOLUTION: The motor-driven operation device has an operation drive mechanism 2 driven by a motor 1 and an operational positioning mechanism 3. The operation device has a positioning floating mechanism 4 that is located at the space between the drive mechanism 2 and the operational positioning mechanism 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device for a mobile agricultural machine, and can be used for a seedling plant, a working machine mounted on a tractor, a combine, or the like.

[0002]

In an operation device having an operation positioning mechanism for determining an operation position by interlocking a manual operation mechanism by driving an actuator such as an electric motor, the operation position and the operation by the actuator are determined. It is difficult to exactly match the positioning of the positioning mechanism, and in a severe case, there is a possibility that the positioning cannot be performed.

[0003]

The present invention comprises an operation drive mechanism 2 and an operation positioning mechanism 3 driven by an actuator 1, and the operation drive mechanism 2 and the operation positioning mechanism 3 are provided.
And an operating device for a mobile agricultural machine, characterized by having a positioning and floating mechanism 4 between the operating device and the moving agricultural machine.

[0004]

When the operation drive mechanism 2 is driven to a predetermined position by driving the actuator 1, the operation positioning mechanism 3 locks the operation position of the operation mechanism. At this time, when accurate positioning by the operation positioning mechanism 3 is not performed, the positioning floating mechanism 4 operates to perform positioning at the operation corresponding position. Therefore, the operation drive mechanism 2
It is possible to smoothly perform the interlock between the control unit and the operation positioning mechanism 3, and to perform the operation positioning accurately.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied to a mobile plant such as a seedling plant, a working machine mounted on a tractor, a combine, or the like. According to a first aspect of the present invention, there is provided a moving device comprising an operation driving mechanism driven by a motor and an operation positioning mechanism, and a positioning floating mechanism between the operation driving mechanism and the operation positioning mechanism. With the configuration of the operation device of the agricultural machine, the interlock between the operation drive mechanism and the operation positioning mechanism is smoothly performed, and the operation positioning is accurately performed.

Here, as the operation drive mechanism, a rack meshed and rotated by a pinion of a motor,
A crank mechanism or the like is used, and there is an elevating lever operated by a lever, which is used for elevating the working machine with respect to the vehicle body. A cam mechanism and a clip mechanism are used as the operation positioning mechanism. Further, the positioning and floating mechanism can be configured to maintain the floating interval due to the pin fitting by the elongated hole and the pin fitted therein, so that the interlocking position can be absorbed by the play.

When the motor is driven by an electric motor, the configuration of the switch depends on the type of switch. However, the configuration may be such that it is turned on by an operation by a pilot, or may be turned on by automatic control. In addition, although the switch of the motor can be operated as an operation lever form, the motor can also be dimensionally driven by using this as a finger-up lever.

Further, the present invention can be used when the operation target driven by the operation mechanism is a hydraulic valve, and the elevation control for elevating and lowering the work implement is switched to an up position, a neutral position, or a down position. When used as a transmission clutch, for example, in a seedling planting machine, it can also be used in a mode in which a planting clutch for transmitting a seedling planting device is operated to an on position and an off position.

[0009]

An embodiment of the present invention will be described with reference to the drawings. The first embodiment will be described with reference to FIGS. 1 to 5 to show the first aspect of the present invention. The second embodiment will be described mainly with reference to FIG. A third embodiment will be described mainly with reference to FIG. The fourth embodiment will be described mainly with reference to FIGS.

[0010]

First Embodiment A first embodiment will be described with reference to FIGS. A mode in which the operating mechanism is used for a seedling raising / lowering lever 6 for raising / lowering the seedling planting apparatus 5 will be described. Seedling plant 5
Comprises a seedling tank 7 for accommodating and feeding seedlings, a planting claw 8 for separating and planting the seedlings to be fed, a float 10 for slidingly supporting a seedling planting frame 9, and the like. It is mounted on the rear of the vehicle body 12 via a hydraulic lift cylinder 13 so as to be able to move up and down.

The vehicle body 12 has front wheels 16 steerable by a steering handle 15 of a steering post 14.
And a rear wheel 18 at the rear of the cockpit 17 to provide a four-wheel drive mode in which the vehicle can be driven by an engine 19 mounted below the cockpit 17. The seedling plant 4 is linked by a power take-out shaft 20 by the engine 19.

Various operating devices are arranged on the vehicle body 12. On the side of the cockpit 17, besides the seedling raising / lowering lever 6 for raising / lowering the seedling plant 4 with respect to the vehicle body 12, a belt 22 from the engine 19 to the input shaft of the transmission case 21 is provided.
The auxiliary shift lever 23 for continuously changing the transmission, the lowering lock lever 24 for stopping and fixing the lowering of the seedling plant 4 by the raising and lowering cylinder 13, and the raising and lowering control valve 25 are switched by the vertical movement of the partial float 10. An elevating / lowering sensitivity adjusting lever 26 for adjusting the sensitivity of the elevating control for raising and lowering the seedling planting device 4 by expansion and contraction of the elevating cylinder 13 is disposed. In addition, a back lift on / off lever 27 that automatically raises the seedling planting device 4 when the vehicle body 12 retreats is provided below the cockpit 17.

Further, a transmission case 2 is provided near the steering handle 15 and the steering post 14.
1, a main clutch petal 28 for operating a main clutch,
In addition to the brake petals 29 for braking the left and right rear wheels 18, a throttle lever 30 for operating the throttle of the engine 19, a finger-up lever 31 for raising and lowering the seedling planting device 4 in a timely manner, A main shift lever 32 for operating the main shift gear to perform a main shift is disposed.

In such a seedling transplanter, the seedling raising / lowering lever 6 is driven by the motor 1 to operate. The rack gear 34 meshed with the pinion 33 as the operation drive mechanism 2 by the electric power of the motor 1 is connected to a shaft 35 provided on a bracket 52 which is a component integrated with the vehicle body 12.
It is pivotally supported around it. Further, a positioning cam 36 integrated with the seedling raising / lowering lever 6 as a manual operation mechanism is rotatably provided on the shaft 35. This positioning cam 36
A cam roller 38 of a swing arm 37 is fitted in sliding contact with the outer peripheral portion to lock the rotating position of the positioning cam 36 or unlock the positioning cam 36 in a freely rotatable state. Three
9 is a support shaft of the swing arm 37, 40 is a cam roller 38
Is a spring that resiliently moves toward the positioning cam 36 side.

The seedling raising / lowering lever 6 includes a cam arm 4
The cam arm 41 presses the cam of the planting clutch for transmission to the seedling planting device 4 so that the clutch can be engaged and disengaged. The seedling raising / lowering lever 6 is provided with a valve arm 42, which can operate the lift link 11 from the neutral position to the lowered position or the raised position by pressing the spool of the lifting / lowering control valve 25.

The arm 43 of such a seedling raising / lowering lever 6
A pin 45 constituting the positioning floating mechanism 4 and an elongated hole 46 for fitting the pin 45 are provided between the positioning cam 36 and the arm 44 integrated with the positioning cam 36. Fix the pin 45 to the arm 44,
An elongated hole 46 is formed in the arm 43. The relative position between the rack gear 34 and the positioning cam 36 on the shaft 35 is engaged through a floating gap formed by the pin 45 and the elongated hole 46 between these arms 44 and 43, so that the rack gear 3
The rotation position of the positioning cam 36 with respect to 4 can be moved back and forth, and the engagement between the positioning cam 36 and the cam roller 38 is engaged at a fixed position. For this reason,
The position of the seedling raising / lowering lever 6 is locked at a fixed position by the positioning cam 36 and the cam roller 38,
Hunting of the seedling raising / lowering lever 6 by controlling the motor 1 can be prevented.

At this time, since the cam roller 38 acting on the positioning cam 36 is pressed by the elastic force of the spring 40, the positioning cam 36 driven by the motor 1 to a certain position is fitted with the pin 45. Since the rotation is made earlier by the play of the long hole 46, the positioning cam 36 is positioned earlier, and hunting can be prevented more effectively.

The operation of the operating mechanism by the motor 1 is performed by an output from the controller 47.
An operation switch 48, a sensor switch 49, a control program 50, and the like are input to the input side of the controller 47. The operation switch 48 may be operated by operating the finger-up lever 31.
The value 0 indicates that the engine switch 55 is turned off, and the case where the sensor switch is used includes a case where the reverse position sensor 49 is turned on when the back lift on / off lever 27 is turned on. As the operation position, a potentiometer 51 for detecting the rotation position of the rack gear 34 is attached to the bracket 52. When the distal end of the extendable arm 53 that is rotated integrally with the rack gear 34 is engaged with the pin groove of the potentiometer arm 54 of the potentiometer 51 and the arm 53 is rotated together with the rack gear 34, the arm is engaged. Potentiometer arm 54
Is rotated, and the potentiometer 51 detects the rotation angle of the rack gear 34.

The seedling raising / lowering lever 6 and the motor 1
Will be described. In the operation by the seedling raising / lowering lever 6, the clutch cam arm 41 and the valve arm 42 are rotated, and the planting clutch and the raising / lowering control valve 25 are operated.
It is possible to switch from the neutral position N to the down planting cutting position A, the down planting insertion position B, and the raising position C. At these positions N, A, B, and C, the engagement positions of the positioning cam 36 are set. Is engaged with the cam roller 38. At this time, the motor 1
Is rotatable, and does not cause a large resistance even if the pinion 33 is rotated by the rotation of the rack gear 34. Further, since the potentiometer 51 is also rotated, the operation position can be input to the controller 47 and displayed.

That is, at the neutral position N, the seedling planting device 5 is not raised and lowered, and the clutch for planting the seedling planting device 5 is also in the disengaged state. At the down planting cutting position A, the seedling planting apparatus 5 is lowered, but the planting clutch is in the off position so that the seedling cannot be planted. At the down planting insertion position B, the seedling planting apparatus 5 is lowered, and the planting clutch is in the on position, so that the seedling can be planted. At the raising position C, the seedling planting device 5 is moved up to the non-seedling position, and the planting clutch is also in the disengaged state.

Next, when the motor 1 is driven, the clutch cam arm 41 and the valve arm 42 are operated. The operation of the motor 1 is performed by an operation switch 48, a sensor switch 49, and , Control output 50, and the like. In the case of the operation switch 48, when the finger gap lever 31 is operated, the motor 1 is rotated at a constant output by the intermittent output from the controller 47 every time the finger gap lever 31 is pulled up once. , Valve arm 42
And the positioning cam 36 is rotated in the ascending direction by one pitch. The one pitch is set as an interval between each engagement position of the cam roller 38 on the positioning cam 36. Conversely, every time the finger-up lever 31 is pressed down once, the valve arm 42, the positioning cam 36, and the like are rotated in the descending direction every pitch.

Next, as a case of the sensor switch, when the back lift on / off lever 27 is operated to the on position, the reverse position sensor 49 detects that the main transmission lever 30 has been operated to the reverse position. As a result, the motor 1 is driven to switch the lift control valve 25 to the raising position C.

Further, as a case according to the control output 50,
By turning off the engine switch 55, the motor 1 is driven to switch the elevation control valve 25 to the neutral position N, and the seedling plant 5 is set to the neutral position. Thereby, the seedling raising / lowering lever 6 is always at the neutral position N when the engine is started, and it is possible to prevent the seedling apparatus 5 from being driven or moved up and down unexpectedly when the engine is started.

When the seedling plant 5 is moved up and down by the grounding of the float sensor 10 to control the seedling depth to a constant level, it is performed at the down planting position B.
This is performed in a configuration of a separate system path from the case where the motor 1 is driven.

[0025]

Second Embodiment The second embodiment will be described mainly with reference to FIG. The cam roller 38 is disengaged from the positioning cam 36 by operating the main shift lever 32 from the forward position F to the reverse position R by setting the back lift on / off lever 27 to the on position D, and the spring 56 springs. The positioning cam 36 and the seedling raising / lowering lever 6 are rotated to the raised position C by force. As a result, the elevation control valve 25 is switched to the elevation position C, and the extension cylinder 13 extends to the maximum elevation position. At this time, the positioning cam 36 is returned to the neutral position N, the cam roller 38 is engaged with the neutral position N, the seedling raising / lowering lever 6 is fixed at the neutral position N, and hunting of the raising / lowering control valve 25 is eliminated. Thus, the position of the seedling raising / lowering lever 6 is ensured.

The arm 57 at the base of the main shift lever 32
As a result, the operation arm 58 is rotated, and the swing arm 37 of the positioning cam 36 is pulled against the spring 60 via the back lift cable 59, thereby disengaging the cam roller 38 from the engagement of the positioning cam 36. Can be. An arm 62 for locking the outer cable 61 outside the back lift cable 59 is rotatably provided on the same axis 63 as the back lift on / off lever 27. It is repelled to the position D side.
And, it is engaged with a locking piece 65 integral with the back lift on / off lever 27.

By turning the back lift on / off lever 27 from the on position D to the off position E, the arm 62 is also turned against the spring 64, and a lower end of the arm 62 is connected via a lift cable 66 connected thereto. Thus, the turning arm 67 provided on the body 12 and the integral component can be turned. The rotation arm 67 is engaged with an engagement edge 69 integral with the piston 68 so as to be rotated by expansion and contraction of the lifting cylinder 13. The rotating arm 67 is connected to the clutch cam arm 41 by an auto return rod 70.

With this configuration, when the back lift on / off lever 27 is set to the on position D and the main speed change lever 32 is moved to the reverse position R and moved backward, the cam roller 38 is detached from the positioning cam 36 via the back lift cable 59. You. As a result, the positioning cam 36 is rotated by the spring 56 and pushes the lift control valve 25 to switch to the raising position C. And
The raising / lowering cylinder 13 is extended to raise the seedling plant 5. Due to this rise, the engaging edge 69 of the lifting cylinder 13
Rotates the rotation arm 67 to pull the lift cable 66 against the spring 64 and loosen the back lift cable 59. Thereby, the cam roller 38 of the swing arm 37 is pressed against the positioning cam 36 by the spring 60. At the same time, the rotation of the rotation arm 67 causes the auto return rod 70 to rotate.
The seedling raising / lowering lever 6 and the positioning cam 36 are
It is returned from the raised position C to the neutral position N and engaged and fixed by the cam roller 38.

Thus, even when the main transmission lever 32 is at the reverse position R, the cam roller 38 can be engaged with the positioning cam 36 to hold the elevation control valve 25 at the neutral position N.

[0030]

Third Embodiment The third embodiment will be described mainly with reference to FIG. The sensitivity of the elevation control valve 25 is controlled by the sub-transmission lever 23, and the sensitivity is reduced in a high-speed running range. A sensing arm 71 is provided between the seedling raising / lowering lever 6 on the lever shaft 35 and the auxiliary transmission lever 23, which is interlocked with the vertical movement of the float 10. When the auxiliary transmission lever 23 is operated to the high-speed position H, the sensing arm 71 Through the spring 72 and the pin 73 of the auxiliary transmission lever 23, the resilience of the spring 72 is increased to increase the operating load of the sensing arm 71 and reduce the sensitivity. Thus, a simple and inexpensive configuration can be achieved by sensitivity control linked to vehicle speed.

When the sensing arm 71 is rotated against the spring 72 by the seedling raising / lowering lever 6, the raising / lowering control valve 25 is pushed and the seedling plant 5 is raised. Descended. The sensing arm 71 is linked to the float 10 by a cable 74. When the float 10 is rotated upward, the cable 74 is pulled and the sensing arm 71
Is rotated to the raised position. When the sub-transmission lever 23 is operated to the lower speed side, the spring 72 is loosened, and the sensitivity returns to the normal sensitive range. A rod 75 is connected to the auxiliary transmission lever 23 and is connected so that the belt 22 can perform a continuously variable transmission.

[0032]

Fourth Embodiment The fourth embodiment will be described mainly with reference to FIGS. The lowering position of the seedling plant 5 is fixed by pulling the lowering lock lever 24 on the operation panel 76 on the side of the cockpit 17 upward, and the operation other than the lowering lock lever 24 lowers either manually or automatically. To make it impossible. An elevating control valve 25 is provided at a lower portion of the operation panel 76, and a lowering lock pin 77 protrudes above this.

The descending lock lever 24 can be turned up and down around a lever shaft 78. When the descending lock pin 77 is pushed down by an adjusting bolt 79 integrated with the descending lock lever 24,
The descending circuit in the elevation control valve 25 is closed so that the elevation cylinder 13 is not reduced. 80 is a push spool.

[Brief description of the drawings]

FIG. 1 is a side view of an operation positioning mechanism according to a first embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a side view of the seedling transplanter.

FIG. 4 is a plan view thereof.

FIG. 5 is a block diagram of the operation control.

FIG. 6 is a perspective view of a positioning cam portion according to a second embodiment.

FIG. 7 is a perspective view of a sensing arm unit according to a third embodiment.

FIG. 8 is a side view of a descending lock lever portion according to a fourth embodiment.

FIG. 9 is a perspective view of the operation panel unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Operation drive mechanism 3 Operation positioning mechanism 4 Positioning floating mechanism 5 Seedling plant 6 Seedling raising / lowering lever 36 Positioning cam 38 Cam roller

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Mitsutaka Izumi 1-Yakura, Tobe-cho, Iyo-gun, Ehime Pref.

Claims (1)

[Claims] An operation drive mechanism and an operation positioning mechanism driven by an actuator are provided, and a positioning play mechanism is provided between the operation drive mechanism and the operation positioning mechanism. Operating equipment for mobile farming machines.