JPH0515214A - Riding agricultural machine for paddy field - Google Patents

Abstract

(57) [Abstract] [Purpose] Agricultural machine equipped with a detection device for detecting mud surface without installing a leveling float on a riding type vehicle body is vertically movably mounted via an elevating device, and a predetermined agricultural machine is provided. Regarding the riding-type agricultural work machine for paddy field that automatically raises and lowers to the working position, the vertical movement control of the farm work machine is performed by the ditcher provided in the farm work machine to suppress the vibration phenomenon of the farm work machine. The purpose is to obtain a riding-type farm work machine for paddy fields that can be used. [Structure] A farming machine 4 is mounted on a riding type vehicle body 1 so as to be vertically movable via an elevating device 2, and a detecting device 7 or 8 for detecting the position of the farming machine 4 with respect to the mud surface.
In the paddy field riding type agricultural working machine in which the agricultural working machine 4 is automatically moved up and down to a predetermined working position by the detection signals of the detection devices 7 and 8, a ditcher 19 for digging a groove on the rice field is provided on the agricultural working machine 4. The paddy riding type configured to support the agricultural work machine 4 at a set height with respect to the paddy field by the supporting force of the grooving device 19 which is provided on the paddy field and is supported by the lifting mechanism 2 against the machine body. Agricultural work machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field riding type agricultural working machine in which an agricultural working machine is mounted on a riding type vehicle body so as to be vertically movable via an elevating device, and the agricultural working machine is automatically controlled to a predetermined working position. It is about.

[0002]

2. Description of the Related Art As a conventional technique of this type, as shown in Japanese Patent Application Laid-Open No. 57-26507, a rice paddy working machine is provided with a detecting device for detecting a mud surface without providing a leveling float. There is a riding-type rice transplanter that automatically controls the working machine. In this way, eliminating the leveling float does not adversely affect the already planted seedlings due to the mud pushing of the leveling float, so that the work traveling speed can be set to a high speed and the work efficiency is improved.

On the other hand, if the leveling float is not provided, the rice transplant work machine is supported only by the riding type vehicle body in a state of being separated from the rice field above the rice field. Therefore, the rice transplant work machine is vertically moved by the automatic lifting control. Then, due to the weight and inertial force of the rice transplanter itself, it vibrates without stopping at an appropriate position, which is a problem in practical use and is not feasible.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention mounts an agricultural working machine 4 on a riding type traveling vehicle body 1 via an elevating device 2 so as to be movable up and down. A paddy field rider in which the farming machine 4 is provided with detection devices 7 and 8 for detecting the position of the farming machine 4 with respect to the mud surface, and the farming machine 4 is automatically lifted and lowered to a predetermined working position by a detection signal of the detection device 7 and 8. In the agricultural farming machine, the farming machine 4 is provided with a grooving device 19 for digging a groove on the rice field, and the farming machine is supported by the supporting force of the grooving device 19 rushed into the rice field against the rice field and the supporting force of the lifting mechanism 2 against the machine body. 4 is a riding-type agricultural working machine for paddy fields, which is configured to support 4 at a set height with respect to the rice field.

[0005]

According to the present invention, as described above, the farming machine 4 is provided with the grooving device 19 for digging a groove on the paddy field, and the supporting force of the grooving device 19 rushed into the paddy field and the lifting mechanism 2 is provided.
Since it is configured to support the agricultural work machine 4 at the set height with respect to the rice field by the supporting force of the machine body, the grooving device 19 is placed in the rice field, and when the agricultural work machine 4 is automatically raised and lowered, When it vibrates, the groove cutter 19 also vibrates together in the rice field, and the mud in the rice field causes resistance to act on the groove machine 19 to suppress the vibration phenomenon of the agricultural work machine 4. Further, since the grooving device 19 is narrow, even if the machine body travels at a high speed, it is less likely to have an adverse effect such as mud pushing. Therefore, farm work can be performed at high speed, and the efficiency can be significantly improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. The reference numeral 1 designates a riding type vehicle body, which includes an airframe 9, an engine 10, a steering handle 11, a mission case 12,
The driver's seat 13, the steering front wheels 14 and 14, and the drive rear wheels 16 provided on the chain case 15 and 15 extending rearward and downward from the left and right sides of the transmission case 12.
It is composed of 16 parts. Reference numeral 4 denotes a seeding device which is mounted on the riding type vehicle body 1 by the link mechanism 3 so as to be vertically movable and rollable. The seeding device 4 is formed by arranging five seeding devices 18 side by side on the frame 17. Seeder 18
Is a grooving device 19 that forms a sowing groove on the mud surface and a seed paddy tank 2
0 and a feeding device 23 that is driven by a shaft 22 that is rotated by the rolling of the ground rolling wheels 21 to feed the seed paddy in the seed paddy tank 20 in a fixed amount, and seed paddy fed by the feeding device 23 is formed by the groove making device 19. It is composed of a guide guide 24 for guiding the inside of the groove, a backfill plate 25 for backfilling the seeded groove, and the like. Reference numeral 6 denotes a leveling tool provided between the rear wheels 16 and 16 and the seeding device 4, which is rotatable about a rolling shaft 28 on a U-shaped frame 27 pivotally supported on a shaft 26. It is pivotally supported. Reference numeral 29 denotes a spring, which is provided to regulate the rolling of the leveling tool 6. Reference numeral 30 denotes a connecting rod extending upward from the leveling tool 6, the upper part of which is connected to a shaft 31 provided between the left and right lower links 3a and 3b of the link mechanism 3 through an elongated hole 32. When the seeding device 4 is lifted by the link mechanism 3 when the machine body is turning, the leveling tool 6 is also lifted by the connecting rod 30.

Numerals 7 and 8 are ground-type left and right detectors for detecting the mud surface, which are in front of the seeding positions a of the left and right outermost seeders 18, 18 and behind the right and left sides of the soil leveling tool 6. It is provided in the position. The detection device 7 is composed of a grounding member 35 pivotally supported by a shaft 33 provided on the frame 17 and elastically pressed by a spring 34 to lightly contact the mud surface, and switches Sa and Sb operated by the rotation of the grounding member 35. It is configured. The detection device 8 has the same structure, and a ground member 38 pivotally supported by a shaft 36 provided on the frame 17 and elastically pressed by a spring 37 to lightly contact the mud surface and a switch Sc operated by the rotation of the ground member 38. -It is composed of Sd.

Next, the vertical movement control of the seeding device 4 by the detection of the grounding type left and right detecting devices 7 and 8 will be described with reference to FIGS. 5 and 6. When the switch Sa is connected (ON) by the grounding member 35 of the detection device 7, the solenoid SOLLD operates to switch the switching valve 2a of the lifting device 2 in the direction i to return the pressure oil in the hydraulic cylinder 2b to the tank T, Since the lower left link 3a is moved downward, the detector 7 side of the seeding device 4 is lowered. On the contrary, when the switch Sb is connected (ON), the solenoid SOLLU operates to switch the switching valve 2a in the B direction, so that pressure oil is supplied into the hydraulic cylinder 2b and the lower left link 3a moves upward. The detector 7 side of the seeding device 4 is moved upward. Similarly, the grounding member 3 of the detection device 8
If the switch Sc is connected (ON) by 8, the solenoid SO
The LRD operates to switch the switching valve 2c in the a direction to return the pressure oil in the hydraulic cylinder 2d to the tank T and move the lower right link 3b downward, so that the detector 8 side of the seeding device 4 descends. On the contrary, when the switch Sd is connected (ON), the solenoid SOLRU operates to switch the switching valve 2c in the B direction, so that pressure oil is supplied into the hydraulic cylinder 2d and the lower right link 3b moves upward. The detector 8 side of the seeding device 4 is moved upward.

When the riding type agricultural working machine equipped with the seeding device 4 configured as described above is moved forward by driving each part in the field, the seeding work is carried out. In the structure of the embodiment of the present invention, Even if there is local unevenness on the mud surface and the cultivator in the field, the grounding detectors 7 and 8 are provided in front of the seeding positions at the left and right outermost positions behind the soil leveling tool 6, and the detection devices 7 and Since the vertical movement and the rolling control by the lifting / lowering device 2 of the seeding device 4 are performed by the detection signal of 8, the seeding depth control can be performed without malfunction and a good seeding work can be performed.

Further, since the agricultural work machine side is not provided with the ground leveling tool, the agricultural work machine side is lighter and the driving force for controlling the agricultural work machine side is smaller. Therefore, the driving means may be small and lightweight, and the entire machine body is lightweight. Can be Further, since the agricultural work machine side is not provided with the leveling tool, the agricultural work machine is not adversely affected by the mud surface and the detection devices 7 and 8 can be accurately detected.

Further, since the detection devices 7 and 8 are located at the outermost left and right seeding line positions, the seeding positions seeded in the previous step are not disturbed by the detection devices 7 and 8 and the seeding depth is constant. Therefore, it is possible to prevent germination failure as much as possible. And, in particular, the seeding device 4 is provided with a supporting force for the rice field of the grooving device 19 digging a groove on the rice field, and the supporting force for the rice field of the grooving device 19 that is arranged in the rice field and the supporting force for the machine body of the elevating mechanism 2. Since it is configured to be supported at the set height with respect to the grooving device 19, the grooving device 19 is placed in a state of plunging into the rice field, and when the seeding device 4 is automatically moved up and down, the grooving device 19 also vibrates up and down in the rice field. It vibrates together, and resistance acts on the grooving device 19 from the mud in the paddy field and acts to suppress the vibration phenomenon of the seeding device 4. Further, since the grooving device 19 is narrow, even if the machine runs at high speed, there is little adverse effect such as mud pushing on the seeding position seeded in the previous step, and the seeding work can be performed at high speed. The efficiency can be significantly improved.

[Brief description of drawings]

1] Overall side view

[Fig. 2] Overall plan view

FIG. 3 is an enlarged sectional view of an essential part of the left detection device.

FIG. 4 is an enlarged sectional view of an essential part of the right detection device.

FIG. 5 is an electric circuit diagram for explaining the operation of the lifting device.

FIG. 6 is a hydraulic circuit diagram for explaining the operation of the lifting device.

[Explanation of symbols]

 1 Riding type vehicle body 2 Lifting device 3 Link mechanism 4 Seeding device 6 Leveling tool 7 Left detecting device 8 Right detecting device

Claims (1)

Claim: What is claimed is: 1. A farming machine 4 is mounted on a riding type vehicle body 1 so as to be vertically movable via an elevating device 2, and the position of the farming machine 4 with respect to the mud surface is detected by the farming machine 4. In the paddy field riding type agricultural work machine, which is provided with a detection device 7/8 for automatically controlling the agricultural work machine 4 to move up and down to a predetermined work position in accordance with a detection signal of the detection device 7/8, a groove is formed on the rice field in the agricultural work machine 4. By providing the grooving device 19 for digging, the farming machine 4 is supported at the set height with respect to the rice field by the supporting force of the grooving device 19 rushed and arranged on the rice field to the rice field and the supporting force of the lifting mechanism 2 against the body. A riding-type agricultural work machine for paddy fields characterized by being configured.