JP3274775B2 - Engine control automatic operation device for riding rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding rice transplanter capable of automatically shifting the rotation of an engine at a low speed to a high speed when a main shifting lever is operated to place it in a seedling connecting position or a planting position in an operating yard. The present invention relates to an automatic engine control device.

[0002]

2. Description of the Related Art Conventionally, a machine equipped with an accelerator operating body for an engine by connecting a planting section is provided with a forward and backward position before and after, and a seedling splicing position and a planting position are provided at an intermediate portion. In a riding rice transplanter configured by disposing an operation groove of a main transmission lever provided, when a seedling is to be transferred to a planting portion during work, the main transmission lever is inserted into a seedling connection position of the operation groove, and seedling is performed. When the planting operation is performed after the splicing operation is completed, the main transmission lever is put into the planting position and the operation is performed.

[0003]

However, if the accelerator operation body is not operated during seedling connection, the engine rotation is noisy at high speed, and the body shakes and energy is wasted. Therefore, the accelerator operation body must be operated together with the operation of the main shift lever, but it is quite difficult and troublesome to perform both operations. It has such a problem.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem as a problem, and makes it possible to automatically and effectively control the rotation of the engine at low and high speeds when operating the main shift lever. Therefore, this machine equipped with an accelerator operating body for the engine by connecting the planting parts has a main shifting lever with a forward and backward position in front and back and a seedling splicing position and a planting position in the middle part. In the riding rice transplanter constructed by disposing the operation groove, when the main transmission lever is placed at the seedling splicing position of the operation groove, the accelerator operation body is moved to the lower speed side, and the main transmission lever is mounted on the operation groove. The accelerator operation body is configured to be automatically interlocked with the operation of the main shift lever so that the accelerator operation body is moved to the high-speed side when it is put into the position.

[0005]

Therefore, when the seedlings are to be transferred to the planted part during the operation, the main shift lever is operated to the neutral side of the operation groove to stop the machine and to enter the seedling transfer position. It is possible to automatically shift the rotation of the engine to low speed while moving the accelerator operation body to the low speed side, and after the seedling connection work is completed, the accelerator While the operating body is moved to the high-speed side, it is possible to perform an operation to automatically shift the rotation of the engine again at a high speed.

[0006]

FIG. 2 shows a side view of a riding rice transplanter. The rear of the machine A equipped with both front wheels 7, both rear wheels 8, handles 9, seats 10 and the like can be raised and lowered by a hydraulic cylinder 11. The planting portions B are connected via a link mechanism 12, and the planting portions B are connected to the floats 13 and the planting cases 1 respectively.
The fertilizer applicator 19 equipped with a seedling table 15 having four and six seedling mounting surfaces, six rotary type planting claws 16, each fertilizer 17 and a blower 18 provided at the rear of the machine A is provided. Each fertilizer 17 is connected to and communicated with a fertilizer hose 20 via a fertilizing hose 20. A plurality of spare seedling stands 21 are provided on both sides of the front of the machine A, respectively. An operation case 23 equipped with an accelerator operation body 2 which is an accelerator lever is provided on the right rear part of the bonnet 22 of the section, and a lower extension arm 2a of the accelerator operation body 2 which can be turned around a rotation fulcrum 24. The distal end of a throttle wire 25 extending from the engine 1 is connected to a lower end of the throttle wire.

An operation groove 4 of the main shift lever 3 is provided on the left side of the seat 10 at the rear upper portion of the machine A.
The right side is provided with an operation groove 27 of a sub-shift lever 26 for planting elevating / working speed change. The operation groove 4 has a forward position F at a front end and a rearward position at a rear end. provided with a reverse position R, the conventional shape similarly constructed by providing the seedling piecing position P ₁ and the planting position P ₂ to the neutral position N of the intermediate portion.

A connecting pin 28 projecting from an intermediate portion of the extension arm 2a of the accelerator operating body 2 and extending parallel to the axis of the rotation fulcrum 24 is provided. A long hole 29 into which the connecting pin 28 is inserted is formed. One end of a threaded rod 31 is fixed to an end of the connecting rod 30 having the threaded rod 31 and can be rotated forward and reverse by a forward / reverse rotation motor 33 pivotally supported at a fulcrum 32.
And a supporting rod 35 which is mounted above the distal end side of the connecting rod 30 is provided with a vertical supporting rod 37 which is elastically pressed downward by a compression spring 36, and the lower end of the supporting rod 37 is located in the vicinity of the tip of the elongated hole 29 and fixed to the stopper 38 as a side view triangular shape, the seedling piecing position P ₁ of the operation groove 4, the main transmission it該苗splicing position P ₁ A micro switch 5 for rotating the motor 33 forward when it comes into contact with the lever 3 is provided.
The _2, microswitch 6 to reverse the motor 33 and contacts the main shift lever 3 to put the attached plant position P ₂
The motor 33 is configured so as to be slow between the normal rotation and the reverse rotation of the motor 33 by a delay provided in the electric circuit.

Therefore, during operation, as shown in FIG. 4, the accelerator operation body 2 is operated to the high-speed side in the direction of arrow A to increase the rotation of the engine 1, but from that state the rotation of the engine 1 is reduced. In this case, when the accelerator operating body 2 is operated in the direction of arrow B, the connecting pin 28
Can be moved in the direction of arrow C while pushing up, and can be operated at a low speed. When the accelerator operating body 2 is operated at a higher speed than at a lower speed,
The connecting pin 28 moving in the elongated hole 29 can operate the high speed side while pushing up the stopper 38.

When the seedlings are to be transferred to the planting section B while the accelerator operating body 2 is being operated to the high speed side as shown in FIG. N
Taking into seedling piecing position P ₁ stops the aircraft is operated, the main shift lever 3 as shown in FIG. 7 is in contact with the micro switch 5, results in the motor 33 rotates forward, where the positive The connecting rod 30 draws the connecting pin 28 toward the screw cylinder 34 by screwing with the rotating screw cylinder 34, and the accelerator operating body 2 which has been on the high-speed side until now is moved in the direction of arrow B as shown in FIG. The engine 1 can be automatically shifted to a lower speed while moving to a lower speed side.

[0011] Beyond the seedling splicing operation, and put the main shift lever 3 to the planting position P ₂ of the operation groove 4, the main shift lever 3 as shown in FIG. 9 in contact with the microswitch 6, the motor 33 is The screw cylinder 3
While the connecting rod 30 is pushed out in the direction away from the screw cylinder 34 side by screwing with the screw 4, the connecting pin 28 is pushed by the stopper 38, and the accelerator operating body 2 which has been on the low-speed side until now is indicated by an arrow as shown in FIG. By moving the engine 1 to the high-speed side in the direction a, the rotation of the engine 1 can be automatically shifted at a high speed.

The accelerator operating body 2 is a foot-operated foot pedal 2 and means such as interlocking wires and hooks interlocking with the main shift lever 3 are used to move the main shift lever 3 to the seedling connection position P ₁ of the operation groove 4. together Add the foot pedal is moved to the low speed side, it is also possible to put a main shift lever 3 to the planting position P ₂ of the operation groove 4 foot pedal is constructed in the interlock operating structures as is moved at a high speed side .

[0013]

As described above, according to the present invention, the main transmission lever 3 is operated to the neutral side of the operation groove 4 to stop the machine body when the seedlings are transferred to the planting portion B, and the seedling transfer position is set. P
_When it is set to 1, the rotation of the engine 1 can be automatically shifted to a low speed while moving the accelerator operation body 2 which was on the high speed side to the low speed side. Position the lever 3 on the planting position P ₂ of the operation groove 4.
, The operation of the engine 1 can be automatically shifted again at a high speed while moving the accelerator operation body 2 to the high-speed side, so that the above-mentioned work problems can be solved and the operability is further improved. It has the feature that it can be carried out suitably.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a main part of an embodiment of the present invention.

FIG. 2 is a side view showing the riding rice transplanter.

FIG. 3 is a plan view schematically showing a riding rice transplanter.

FIG. 4 is a side view showing an accelerator operation body.

FIG. 5 is an enlarged side view of a part of FIG. 4;

FIG. 6 is an enlarged front view showing a part of FIG. 4;

FIG. 7 is an operation explanatory view showing the operation state of FIG. 1;

FIG. 8 is an operation explanatory view showing an operation state of FIG. 4;

FIG. 9 is an operation explanatory view showing an operation state of FIG. 7;

FIG. 10 is an operation explanatory view showing the operation state of FIG. 8;

[Explanation of symbols]

A Machine B Planting part 1 Engine 2 Accelerator body F Forward position R Reverse position P ₁ Seedling position P ₂ Planting position 3 Main transmission lever 4 Operation groove

Claims (1)

(57) [Claims] The machine A equipped with an accelerator operating body 2 for an engine 1 by connecting a planting portion B has a forward and backward
Operation in the riding rice transplanter, the main speed change lever 3 forming deploying the operation groove 4 seedlings joint position P ₁ and the main shift lever 3 having a planting position P ₂ in the intermediate portion provided with a reverse position R wherein when placed in seedling piecing position P ₁ of the groove 4 the accelerator operation member 2
Together but is moved to the low speed side, the main speed-change lever 3 the operation groove 4 and put in the planting position P ₂ accelerator operation member 2 is accelerator operation member 2 to be moved at a high speed side automatically main shift lever 3. An automatic engine control device characterized in that it can be linked to the operation of 3.