JPS61139307A - Walking type rice field agricultural working machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention has rice paddy wheels that are moved up and down separately by hydraulic devices on both the left and right sides of a machine body equipped with rice field work equipment such as rice transplanting equipment and seeding equipment. This invention relates to a walking-type paddy field agricultural machine.

[Prior art]

In this type of conventional rice paddy farming machine, the left and right paddy wheels are moved up and down separately using a hydraulic device, and the control is controlled by a ground float placed between the left and right paddy wheels that always slides along the soil surface. It rotates around the axis in the front-back direction so that it can roll freely, and when the aircraft swings from side to side with respect to this ground float, it detects the swing of the aircraft and uses this detection signal to switch the hydraulic pressure of the hydraulic system. A walk-behind rice transplanter, which is an example of a paddy field working machine, is known, which is configured to control the left and right paddy wheels up and down by switching valves so that the machine body returns to a horizontal state.

[Problem that the invention seeks to solve]

In the conventional rice transplanter described above, when turning, the ground float tilts due to the resistance of the muddy soil on the turning side, causing the turning side to crawl into the paddy field and scoop up the muddy water. As a result, there was a problem in that the distance between the aircraft on the turning side and the ground float was large, causing the paddy wheels to be controlled upwards, making it impossible to turn.

[Means for solving problems]

This invention takes the following technical measures to solve the conventional problems. That is, the present invention has rice paddy wheels αQ, αη that are individually moved up and down by hydraulic devices (to) on both the left and right sides of the machine body (1) equipped with paddy field working devices (5) such as rice transplanters and sowing devices. The hydraulic switching valve (c) of the hydraulic system (to) is connected to a grounding float (located between the left and right wheels that is attached to the soil surface so that it can roll left and right).
(17), the left and right paddy wheels aS,
The side clutch levers (C) and - and the ground float (P) on the wheel side, where power transmission is cut off due to the ``off'' operation of the side clutch that stops the power transmission rotation, do not fall. A walking-type paddy field working machine is constructed by linking the above and the above.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS A walking-type rice transplanter which is an embodiment of the present invention will be described in detail based on the drawings.

(1) is the fuselage, which has an engine stand (3) attached to the front of a traveling mission case (2), and a connecting frame (4) that also serves as a chain case attached to the rear. 4
) A rice transplanting device as a working device (5) is attached to the rear end side of the rice transplanter. (6) shows the engine, and (7) shows the bonnet. The rice transplanting device (5) includes a planting case (8) fixed to the rear end of the connecting frame (4), and a seedling planting tool r9 attached to both left and right sides of the planting case (8). ), (
9) and a seedling tank αη whose base is fixed to the planting case (8) and extends rearward and upward, and which is supported so as to be movable from side to side along the upper part of α0 and moves horizontally in both directions. It consists of

@, α] In the Hachien case, the base is fixed to αG, and the base is fixed to αG, and the tip side is facing rearward. It is configured like this.

αQ and αη are paddy wheels, which are pivotally attached to the upper end of the chain case and to the tip end of the α bar, and are provided so as to be moved up and down while being rotated by transmission.

α (to) is a hydraulic system, which has the configuration shown in the hydraulic circuit in Fig. 3, and includes a pair of hydraulic pumps (1) and (1) with separate hydraulic switching valves (an, a). It consists of a hydraulic cylinder device (c), I24, a relief valve (b), a pipe, a hydraulic tank (goods), etc., which are piped through the hydraulic cylinder device (c), I24. And the hydraulic cylinder device (a), (
C) are located on both left and right sides of the front side of the fuselage (1), and are provided at the left and right end sides of the spring plates that are provided so that they project from the engine stand (3) through the front metal fittings (to) to the left and right sides at the tip side. Attach the cylinders (28a) and (24a) to the
Pistons (23b), (24b) 'c Arm (1) integrated with the metal α→, αQ.

01).

(2) is a grounding float, which is arranged at the bottom of the fuselage (1) and extends long in the front and back direction, and the rear left and right center part can be rotated around the left and right pins toward the base of the handle aO. The grounding float (to) is provided so as to be able to roll freely in left and right, up and down directions by means of a bracket w and a front-back pin (b).

(To), ω is a tilting detector, and a metal fitting (B) is pivotally supported on the engine stand (3), and rollers (G) and (G) that come into contact with the grounding float (2) are attached to (To). It is something.

(L41), (6) is a rod, hydraulic switching valve Q1),
The switching arm ■, @4 of (A) is interlocked with the metal fitting (B), @, and the tilting detection body (7) is connected to the ground float (to).
The hydraulic switching valves 21) and b are provided so that they are switched when c36 is moved up and down.

2), - is a side clutch lever, and a side clutch (not shown) that turns on and off the transmission of the left and right paddy wheels M and αη inside the traveling transmission case (2) is connected via a wire. It is a lever that operates, and the left and right handle α
0, Ql) is a well-known device provided on the tip side.

＠η, (Foundation) is a suspension arm provided on both left and right sides of the tip side of the grounding float (To), and this arm 0η, (Foundation)
When the side clutch levers ■ and - on that side are interlocked by wire θ, and the left and right side clutch levers ■ and (g) are used to turn off the side clutch on that side. The wire is pulled to the ground float on that side (to)
Even if it is small, it should not fall below a certain level.

Next, to explain the function of the upper side, during seedling planting, the machine body (1) is tilted due to the unevenness on the left and right sides of the tiller. At this time, if the plowing platform becomes too deep and becomes troublesome, the soil surface of the paddy field is almost flat, so the side of the grounding float (to) that is bothering the body is pushed up and the float (2) rotates around the pin (2). move. Therefore, the tilting detector (to), roller (to), (a) on that side is moved upward, and the grounding float (to) is pushed through the rondo 01), switching arm, @4. Switch the hydraulic switching valves (c) and (b) on the raised side and the piston (23) of the hydraulic cylinder device (2) and (c) on that side.
b), (24b) will be made to protrude. For this reason, the chain case α1 of the first one is rotated downward via the arm ■, l31), and the paddy wheel αQ or the chain case α1 is rotated downward.
moves down, gradually raises the aircraft (1) on that side, and the aircraft (
Correct the annoyance in 1). When the left or right side of the tiller becomes shallow, the grounding float (to) rotates downward, contrary to the above field, so the hydraulic switching valves @1) and @ are switched in the opposite direction, and the paddy wheels ae, αη moves upward to correct the trouble of the aircraft (1).

In this way, during the seedling planting work, the aircraft (1) is propelled while correcting the lateral movement, but when turning, the side clutch V is used to stop the paddy wheels 0Q and αη on the turning side. Turn the side clutch ``off'' with Par (c) or - and turn by operating the handle αO.

At this time, the side surface of the grounding float on the turning side receives turning resistance, causing the grounding float to try to scoop up mud. However, the grounding float (to) is linked to the side clutch lever (c), ni), and in order to prevent this trouble, the grounding float (to) is used to pull up the turning side.
This prevents the paddy wheels αQ on the turning side from tilting.
It is possible to accurately turn without αη being moved upward by automatic control.

In the example shown, the side clutch levers -■ and - are interlocked with wires to prevent the grounding float (to) from moving downwards, but this interlocking mechanism is not limited, and various other mechanisms such as electrical interlocking may also be used. Interlocking structures are contemplated, and any other interlocking means may be used.

[Effect]

As described above, this invention has the above-mentioned structure, and the pair of left and right paddy wheels are independently controlled up and down by the rolling motion of a single ground float via a hydraulic system, and the troubles of the aircraft are automatically corrected. Despite the structure, it is possible to prevent the ground float from penetrating into the soil, which was an inconvenience when turning, and when turning, the paddy wheel on the turning side moves upwards, losing propulsion and making it impossible to turn. It has the effect of being able to reliably prevent the object from falling into place, and to enable accurate turning.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view of a walking rice transplanter, Fig. 2 is a partially simplified plan view, and Fig. 3 is a hydraulic circuit diagram. Symbols in the figure: (1) is the aircraft, (5) is the working device (rice transplanting device), αQ, α force is the paddy wheel, (to) is the hydraulic system, Ql)
, @ is hydraulic switching valve, (to) is ground float, (c)
The two wheels indicate a side clutch lever.

Claims (1)

[Claims] Paddy wheels (16) and (17) are mounted on both left and right sides of the machine (1), which is equipped with paddy field work equipment (5) such as rice transplanting equipment and sowing equipment, which are moved up and down separately by hydraulic equipment (18). ,
Hydraulic switching valves (21), (22) of the hydraulic system (18)
is switched by a grounding float (32) that is installed between the left and right wheels so that it can touch the soil surface and roll left and right. In a rice paddy farming machine that performs vertical control, the grounding of the wheel side where the transmission was cut off due to the "disengaged" operation of the side clutch that stops the transmission rotation of the left and right rice paddy wheels (16) and (17). This walking type paddy field working machine is constructed by interlocking side clutch levers (45), (46) and a ground float (32) so that the float part does not fall.