JPS5938087Y2 - Rice transplanter steering device - Google Patents

Description

[Detailed description of the invention] The present invention consists of a planting section that has a seedling stand and planting claws, and a riding section that is made up of an agricultural tractor or a vehicle dedicated to rice planting. 8.
Regarding the steering device of the B-planter, the steering output shaft of the automatic steering control member is interlocked with the switching shaft of the steering guide member that drives and controls the hydraulic cylinder for steering operation, and the pitman arm that is linked with the steering handle. The automatic steering control member is connected to each other, and the steering operation of the automatic steering control member controls the steering switching member via the steering output shaft and the switching shaft, and the manual steering operation of the steering handle controls the focus control member. The steering switching member is configured to be switchable via the arm, the automatic steering control member, and each of the axes, and the steering and
・By connecting an automatic steering control member in the middle of the link between the rattle and the steering switching member and arranging them in series, manual steering by the rattle and automatic steering by the automatic steering control member are possible. Each direction steering control can be properly performed with a simple structure, and by using the steering switching member in combination with each steering control, the operating force of the steering wheel can be reduced, and the sharp turning by the rudder can be reduced. The operation and the fine adjustment for straight-ahead driving by the automatic steering control member can be performed simultaneously or individually, and the steering operation, which is mainly based on the steering wheel operation, can be simplified. The present invention aims to provide a steering device for a rice transplanter that allows auxiliary work such as seedling transfer to be carried out safely.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a schematic side view of the riding rice transplanter, and Fig. 2 is a plan view of the same. In the figure, there is a passenger section consisting of a running vehicle dedicated to IFi rice transplanting, 2 is a front vehicle body, and 3 is a rear vehicle body.

4.5 is a connecting frame 7 which connects the front and rear vehicle bodies 2 and 3 so as to be bendable only in the horizontal direction via the pivot shaft 6;
9 is a front axle for paddy fields that is attached to the left and right sides of the front vehicle body 2 via swing cases 8, 9I/'i & rear wheels for paddy fields are attached to the left and right sides of the vehicle body 3 via swing cases 10, and 11 is a base end fixed to the front vehicle body 2. 12, a spare seedling stand to be attached to the pole 11; 13, steps provided on both sides of the front vehicle body 2; 14, fenders 115 for the front wheels 7; 'i A steering wheel 17 provided at the upper front part of the front body 2 is an engine mounted on the rear body 3, and the front and rear bodies 2 and 3 are appropriately bent around the rotation fulcrum shaft 6 to adjust the direction of travel. It is configured to correct this.

In addition, 18 in the figure is a three-point link mechanism 19 at the front of the front vehicle body 2.
20 is a seedling platform that can be raised and lowered freely through the platform, and 20 is a seedling platform with a front low and rear height that can be moved back and forth from side to side; 21 is a planting claw that takes out one seedling from the platform 20 and plants it; A transmission case to which the seedling platform 20 and planting claws 21 are attached; 23 is a float that supports the case 22; and 24 is a front bumper attached to the transmission case 22, which drives the seedling platform 20 and planting claws 21 as appropriate. , so that seedlings are planted continuously.

Furthermore, as shown in FIGS. 3 and 4, a hydraulic cylinder 25 is provided to connect and support the front vehicle body 2, and the rear vehicle body 3
An idle arm 26 is integrally formed on the side connection frame 5, and the piston rod 27 of the cylinder 25 is connected to the idle arm 26.

A 3-position, 4-port hydraulic switching servo valve 29 is a steering switching member that supplies the hydraulic pressure necessary to move the piston rod 27 forward and backward from the hydraulic pump 28 to the cylinder 25.
In addition, an electric motor 30 and a telescoping rod 31 which is a steering output shaft driven forward and backward by the motor 30 are provided.
An electric cylinder 32, which is an automatic control member, is provided,
The telescoping rod 31 is connected to a switching shaft 33 of the servo valve 29, and the motor 30 is rotated forward and reverse to move the rod 31 and spool 33, switching the servo valve 29 and driving the hydraulic cylinder 25 as appropriate. do.

Said Electric Tsu! The J 71-32 is connected and supported by a pitman arm 34, and a lower handle shaft 35 interlockingly connected to the arm 34 and an upper handle shaft 36 to which the handle 16 is fixed are connected by a universal joint 37.

By steering the handle 16, the servo valve 29 is switched and the hydraulic cylinder 25 is driven, and the handle shafts 35 and 36 are bent using the universal joint 37 as a fulcrum, and the handle 16 is tilted forward. It is configured so that the seedling table 20 can be raised and lowered and the seedling table 20 can be replenished with seedlings.

On the other hand, as shown in FIG.
The base ends of the pillars 42 and 43 provided with 1 at the tips are the substrates 38 and 39
It is rotatably attached to support shafts 44 and 45 of the planting section 18, and the traveling sensors 40 and 41 are formed to protrude appropriately to the left and right sides of the planting section 18.

The traveling sensors 40, 41, the adjacent already planted seedlings 46...
Wheel body 48 to be pushed into ruts 47 of wheels 7 formed between rows
, 49, and telescopic supporting legs 5 that support the wheels 48, 49.
0, 51, a bearing body 52.53 to which supporting legs 50, 51 are rotatably attached to the tips of the pillars 42, 43, and supporting legs SO, which are rotary displacements of wheels 48, 49 that change direction along the track 47.
, si, and is configured to detect the running trajectory based on the ruts 47 between adjacent already planted seedlings 46 .

In addition, left and right lifting levers 56 and 57 are provided for lifting and rotating the pillars 42 and 43 to the side or above the planting section 18.

A frame plate 58 is attached to the inside of the right phenol 14 shown in FIG.
said levers 56, 5 via wire ropes 62, 63.
7 are connected, and by operating the levers 56 and 57, the support columns 42 and 43 are rotated, and the travel sensors 40 and 41 are formed to move up and down.

In addition, as shown in FIG. 6, a bridge body 64 is provided on the supporting legs 50, 51 in place of the wheels 48, 49, and the bridge body 6 is attached to J147.
4 and move the bridge body 64 along the ruts 47, the travel locus can also be easily detected.

Next, FIG. 1 is an electric circuit diagram for controlling the motor 30 of the electric cylinder 32, which incorporates a power relay 66 having a normally open switch 66a that turns on and off the power source 65.
As shown in FIG. 4, an operating switch 67, which is turned on when the handle 16 is tilted forward, and a power switch 68, which is manually operated by the driver, are connected in series to the relay 66. Relay 6 by either
6 is formed so that it can be operated with excitation.

In addition, the reference value of the semi-fixed resistor 69 and each traveling sensor 40,
41 is provided.

Sensor actuation switches 71, 72 are connected in series to the detection switches 54, 55 of the sensors 40, 41, respectively, and each switch 7L72 is installed near the elevator lever 56, 57 as shown in FIG. When the travel sensors 40, 41 are lowered by operating the lever 57, the lever 56
Turn on Sinchia 1.72 by ゜57, rut 47
Detection switch 54.5 on the side where the wheel body 48 is inserted into the
5 outputs are applied to the circuit 70.

Comparison detection circuits 74 and 75 that compare and determine the output of the travel trajectory detection circuit 10 and the output of the position detector 73 that detects the amount of change in the piston rod 27 of the hydraulic cylinder 25.
Further, forward and reverse rotation switching circuits 76 and 77 are connected to each of the circuits 74 and 75, so that the motor 30 of the electric cylinder 32 can be rotated in the forward and reverse directions as appropriate via each of the circuits 76 and 77.

A relay 18 which is excited and activated by each of the switch rows 76 and 77 is installed, and the normally closed switch γ8a of this relay 78 is connected in parallel to the motor 30, so that the motor 30 and the relay 78 are interlocked, and the motor 30 is activated. When stopped, these two poles are short-circuited via the normally closed switch 78a, and the motor 30 is momentarily stopped.

The present invention is constructed as described above.
Tilt the machine forward and turn on the activation switch 67.
Alternatively, the driver turns on the power switch 68 and the power source 65
Apply.

Further, as shown in FIG. 5, in order to push the wheel 48 into the rut 47 between the adjacent already planted seedlings 46, the lift lever 56 is operated to rotate the support 42 downward and the travel sensor 40 is lowered. , the sensor activation switch 71 is turned on.

The detection switch 54 is connected to the travel trajectory detection circuit 70.

When the wheel body 48 and the supporting leg 50 are rotated along the track 47, the switch 54 is switched in conjunction with this,
The traveling trajectory detection circuit 7
A control output occurs at 0.

This and the output of the position detector 73 are compared by each circuit 74, 75, and the motor 30 is rotated in the forward or reverse direction via the switching circuits 16 and 17 at the subsequent stage, and the electric cylinder 3
The spool 33 of the servo valve 29 is driven forward and backward through the telescopic rod 31 of No. 2, and the valve 29 is switched to move the piston rod 27 of the hydraulic cylinder 25 forward and backward. The steering control is performed so that the vehicle bends and moves along the ruts 47.

Further, when the travel sensor 41 is lifted by operating the lift lever 57 as shown in FIG.
2 is turned off, and the detection switch 54 is kept off, and the left and right travel sensors 40, 4 are turned off when turning, etc.
1, the pitman arm 34 is actuated by operating the handle 16, and the electric cylinder 32 in the fixed state is activated.
The spool 33 of the servo valve 29 is moved via the telescopic rod 31, and the front and rear vehicle bodies 2 are moved via the hydraulic cylinder 25.
, 3 are bent, and steering control is performed using a handle 16.

As shown in the above embodiments, the present invention provides an automatic steering control member such as an electric cylinder 32 on a switching shaft such as a switching spool 33 of a steering switching member such as a hydraulic switching servo valve 29 that drives and controls a hydraulic cylinder for steering operation. The steering output shaft such as the telescopic rod 31 is interlocked and connected, and the steering handle 1
The automatic steering control member 32 is connected to the focus man arm 34 which is interlocked with the focus man arm 6, and the steering switching member 29 is connected to the focus man arm 34 through the steering output shaft 31 and the switching shaft 33 by the steering operation of the automatic steering control member 32. Second, the steering switching member 29 is configured to be able to be switched by manual steering operation of the steering handle 16 via the focus man arm 34, the automatic steering control member 32, and each of the shafts 31 and 33, The steering
By connecting the automatic steering control member 32 between the steering wheel 16 and the steering switching member 29 and arranging them in series, the manual steering by the steering wheel 16 and the automatic steering control can be performed. Each automatic steering control by the member 32 can be appropriately performed with a simple structure.

By using the steering switching member 29 in combination with each of the steering controls, the operating force of the bundle 16 can be reduced, and the steering control member 32 can be used to perform a sharp turning operation and the automatic steering control member 32 can be used to perform a fine turning operation for straight-ahead driving. Adjustments can be made at the same time or individually, and the steering operation, which is mainly done by operating the handle 16, can be simplified, and auxiliary work such as transferring seedlings to the seedling stand 20 while driving straight ahead can be performed. It can be carried out safely, improves efficiency of rice transplanting work, and has remarkable effects such as being extremely practical.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a schematic side view of a riding rice transplanter, Fig. 2 is a plan view of the same, Fig. 3 is a partial plan view of the riding section, and Fig. 4 is an operation diagram. FIG. 5 is a partial explanatory view of the planting section, FIG. 6 is a partial perspective view showing a modification, and FIG. 7 is an electric circuit diagram for controlling steering. 16...Handle, 25...Hydraulic cylinder, 32...Electric cylinder (automatic control element)
.

Claims (1)

[Claims for Utility Model Registration] The steering output shaft 31 of the automatic steering control member 32 is interlocked and connected to the switching shaft 33 of the steering switching member 29 that drives and controls the steering operation hydraulic cylinder 25. Steering: The automatic steering control member 32 is connected to the focus man arm 34 which is interlocked with the ladle 16, and the steering operation is performed via the steering output shaft 31 and the switching shaft 33 by the steering operation of the automatic steering control member 32. The direction switching member 29 is also
The focus man arm 3 is controlled by the manual steering operation of the ladle 16.
4, an automatic steering control member 32, and each of the shafts 3L33, the steering switching member 29 is configured to be switchable, respectively.