JPH0515714U - Elevator control device for planting section of passenger rice transplanter - Google Patents

Abstract

(57) [Summary] [Purpose] The planting part is controlled up and down according to the water depth of the field without attaching a float to the planting part, and the planting depth of seedlings by the planting part is kept constant. To be able to do. [Composition] A planting part of a riding rice transplanter in which a planting part 2 is connected to a rear part of a traveling part 1 capable of self-propelling via an elevating link mechanism 3 and the planting part 2 can be raised and lowered by an elevating hydraulic cylinder 4. In the elevating control device, a float sensor 40 for detecting the water surface W of the field and a ground sensor 42 for detecting the soil surface G of the field are attached to the traveling unit 1, and the control unit C determines the detection result of both sensors 40, 42. The expansion / contraction operation of the lifting hydraulic cylinder 4 can be controlled.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a planting part elevation control device for a riding rice transplanter.

[0002]

[Prior Art]

 Conventionally, as an elevation control device for a planting section attached to a riding rice transplanter, there is one disclosed in Japanese Patent Laid-Open No. 64-67109.

That is, in the above-mentioned riding rice transplanter, a planting unit is connected to the rear of a traveling unit that is self-propelled through an elevating link mechanism, and the planting unit can be lifted and lowered by an elevating hydraulic cylinder. A float is attached to the lower part so that the planted part can be grounded and supported by the float.

[0006] The lifting hydraulic cylinder is expanded / contracted in conjunction with the lifting movement of the float due to the change in the unevenness of the soil to prevent shallow planting and floating seedling generation.

[0005]

[Problems to be solved by the device]

 However, if the running part is run at high speed to improve work performance, the water pressure acting on the bottom surface of the float increases and the entire planting part rises, tending to shallow planting, and the planting posture is also unsatisfactory. There is a problem of becoming stable.

[0006]

[Means for Solving the Problems]

 Therefore, in the present invention, the planting part is connected to the rear of the self-propelled running part through the lifting link mechanism, and the planting part is lifted and lowered by the lifting hydraulic cylinder. In the control device, a float sensor that detects the water surface of the field and a ground sensor that detects the soil surface of the field are attached to the running part, and the control part can control the expansion and contraction operation of the lifting hydraulic cylinder based on the detection results of both sensors. The purpose of the present invention is to provide a control device for raising and lowering the planting section of the riding rice transplanter.

[0007]

[Action]

 When carrying out the planting work, support the planting part attached to the rear of the running part via the lifting link mechanism so that a certain planting depth can be secured by the lifting hydraulic cylinder, and while running the running part. Seedlings are planted by the planting section.

At this time, a float sensor that detects the water surface of the field and a grounding sensor that detects the soil surface of the field are attached to the traveling unit, and the change in the difference between the detection results of both sensors is proportional to the change in the water depth. Based on the detection result, the control unit controls the expansion / contraction operation of the lifting hydraulic cylinder based on the detection result to keep the planting depth of the seedlings by the planting unit constant, thereby allowing the traveling unit to travel at high speed. In this case, shallow planting and floating seedlings can be prevented.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1A shows a riding rice transplanter equipped with a planting part elevation control device M according to the present invention, and the riding rice transplanter A is located behind the self-propelled traveling unit 1. 2 are connected via a lifting link mechanism 3, and the planting part 2 can be lifted and lowered by a lifting hydraulic cylinder 4.

As shown in FIG. 1, the traveling unit 1 is provided with an engine 11 at a front portion of a body frame 10 and an operation unit 12 at a rear portion thereof.

A mission case 13 is movably connected to and mounted on the engine 11 on the lower front side of the machine body frame 10.

Further, left and right front axle cases 15 and 15 are provided on the lower front side of the machine body frame 10 toward the left and right sides, respectively, and front wheels 16 and 16 are attached to the tips of the case 15 and 15, respectively. Attached.

A rear axle case 17 is attached to the rear portion of the body frame 10 in an interlocking manner with the mission case 13, and rear wheels 18 and 18 are attached to the left and right side surfaces of the case 17, respectively. Reference numeral 19 is a transmission shaft that connects the rear axle case 17 and the mission case 13 together.

Reference numeral 20 denotes a floor that also serves as a floor surface, a speed change guide, a fender, a seat mounting plate 20a, etc., and is integrally molded with a synthetic resin having a high rigidity such as FRP and the like. It is stretched over.

Reference numeral 21 is a bonnet, which covers the engine 11 and a steering shaft 23 of the operation unit 12 which will be described later.

Further, in the above-mentioned driving unit 12, the steering shaft 23 is erected immediately after the engine 11 and the handle 24 is attached to the upper end of the shaft 23, while the seat mounting plate 20a located immediately behind the handle 24 is provided. Seat 25 is placed on the top.

Further, at the rear portion of the upper surface of the floor 20, there is attached a control section C which constitutes a part of the planting section elevation control device M according to the present invention.

Further, 31 is an auxiliary shift lever that protrudes upward from the left side surface of the bonnet 21, 32 is a planting part elevating lever arranged on the right side of the seat 25, and 33 is a left side of the bonnet 21. It is a clutch pedal installed.

In the planting section 2, a planting mission case 35 is attached to the rear end of the elevating and lowering link mechanism 3, and a seedling stand 36 is placed on the case 35 in a front-rear and low-inclined manner. A planting claw 37 is linked to the rear part of the 35. 38 is a planted drive shaft.

In the above-mentioned configuration, the gist of the present invention is that the planting part elevation control device M is provided in the traveling part, and the control device M will be described below with reference to FIGS. 1 to 3. Explain.

That is, the planting part elevation control device M can attach the float sensor 40 that detects the water surface W of the field H via the sensing link 41 to the midway part of the body frame 10 of the traveling part 1 and at the same time, The grounding sensor 42 for detecting the soil surface G is attached, and the extension / contraction operation of the lifting hydraulic cylinder 4 can be controlled by the control unit C attached to the rear portion of the upper surface of the floor 20 based on the detection results of both sensors 40, 42. ..

As shown in FIGS. 2 and 3, the float sensor 40 is formed in a narrow plate shape by a lightweight material floating on the water surface, and the lower end of the sensing link 41 is connected to the connecting bracket 43 on the upper surface of the front end portion. Via the connecting pin 44, and the upper end 41a of the link 41 is attached to the stay 50 attached to the aircraft frame 10 via the bearing 51 to the pivot shaft 45, and the pivot shaft 45 to which the potentiometer 46 is attached. There is.

Further, as shown in FIGS. 2 and 3, the ground sensor 42 is formed in a rod shape which is bent downward in a convex shape, and an upper end is attached to a stay 50 attached to the body frame 10 via a bearing 47. It is attached to a suspended support shaft 48, and a potentiometer 49 is attached to the support shaft 48 so that the lower end portion 42a of the sensor 42 is grounded and slid on the soil surface G.

The potentiometers 46 and 49 attached to the sensors 40 and 42 are control units C that use the amount of rotation of the pivot shaft 45 and the support shaft 48 as electric signals when the sensors 40 and 42 swing up and down. I am trying to type in.

Then, the control unit C determines the difference between the detection results input from the potentiometers 46, 49 as the water depth, and the expansion / contraction hydraulic cylinder 4 is expanded / contracted according to the change in the water depth to move the planting unit 2. By raising and lowering, the planting depth of the seedlings by the planting section 2 can be kept constant.

Moreover, the traveling speed of the traveling unit 1 is also input to the control unit C, and when the traveling speed is equal to or higher than a certain high speed, the lifting hydraulic cylinder 4 is extended to move the planting unit 2. By lowering it, the planting depth of the seedlings by the planting section 2 can be kept constant.

Therefore, the occurrence of shallow planting and floating seedlings can be prevented, and the planting accuracy can be ensured satisfactorily.

Further, the above-mentioned planting part raising / lowering control device M operates by turning on the automatic control switch 52 provided in the operating part 12, so that the raising / lowering control of the planting part 2 is automatically performed. I have to.

[0030]

【effect】

 According to the present invention, the following effects can be obtained.

That is, according to the present invention, the planting part is controlled to move up and down according to the water depth of the field without attaching a float to the planting part, and the planting depth of seedlings by the planting part is controlled. Since the planting accuracy can be kept constant, the planting work efficiency can be improved while the planting accuracy is kept good.

[Brief description of drawings]

FIG. 1 is a side view of a riding rice transplanter equipped with a planting part elevation control device according to the present invention.

FIG. 2 is an enlarged side view of the main part.

FIG. 3 is an enlarged plan view of the main part.

[Explanation of symbols]

 A Passenger rice transplanter M Lifting control device for planting part 1 Traveling part 2 Planting part 3 Lifting link mechanism 4 Lifting hydraulic cylinder 40 Float sensor 42 Ground sensor

Claims (1)

[Scope of utility model registration request] 1. A planting machine for a riding rice transplanter in which a planting section 2 is connected to a rear of a self-propelled traveling section 1 through a lifting link mechanism 3, and the planting section 2 can be raised and lowered by a lifting hydraulic cylinder 4. In the attached part raising / lowering control device, a float sensor 40 for detecting the water surface W of the field and a grounding sensor 42 for detecting the soil surface G of the field are attached to the traveling part 1, and the control unit is based on the detection results of both sensors 40, 42. A planting part elevation control device for a riding rice transplanter characterized in that the expansion / contraction operation of the elevation hydraulic cylinder 4 can be controlled by C.