JPS615709A - Rice transplanter posture detection device - 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" The present invention is applicable to, for example, a seedling stand and a walk-behind 1f1 planting machine in which the planting soil (claws, etc.) are supported by left and right running wheels. The present invention relates to a device for detecting posture changes.

"Prior Art" Conventionally, as shown in Japanese Utility Model Publication No. 56-16893, a detection body for detecting the support height of the machine body and the left and right inclination is provided, and planting is performed by keeping the support height of the machine body with respect to the rice field approximately constant, and There was a technique to keep the planting approximately horizontal to the left and right sides of the rice field.

``Problems to be solved by the invention'' Conventionally, due to the change in weight of the i°1 platform and the soil quality of the rice field, the running resistance of the running wheels acts as a reaction force, causing the machine to move back and forth. Jjl was lowered, and since the longitudinal inclination of the aircraft was unstable, depending on the position where the sensor was installed, the sensor would be activated even if the aircraft was only tilted longitudinally, and the sensor could detect changes in left and right inclination at the same height as the support height of the aircraft. Misdetection is easy, and planting requires cumbersome operations such as adjusting the position of the detector depending on the soil quality of the rice field. There are problems such as the need for special installation, which complicates the structure and handling operations.

"Means for Solving the Problem" However, the present invention is characterized in that a body support height detector and a left/right tilt detector are separately arranged approximately in front and approximately behind the running wheels. .

``Function'' Since the body support height and left and right inclination detectors are provided separately, it is possible to stabilize the body posture by placing the detectors on the front, rear, left and right sides of the body, and also to detect changes in the weight of the loaded seedlings and the movement. The above-mentioned detection bodies can be placed at positions where they can operate most stably in consideration of the longitudinal νj inclination of the aircraft body due to the reaction force, and the above-mentioned detection bodies can safely and accurately control the aircraft support height and lateral inclination. 1] It is something that can be earned.

"Example" Embodiments of the present invention will be described in detail below based on the drawings.

Figure 1 is an overall plan view, Figure 2 is a side view of the same, where (I) is the engine, (2) is the transmission case, and (3) is the engine.
is a planting transmission case, and (4) is a planting drive case.

(5) (5) is the left and right running wheels for paddy fields that are supported on both sides of the mission case (2) so as to be able to rise and fall via swing cases (6), (7) is the rear side of the drive case (4) The steering handle (8a) (8a) is connected to the handle I
・Rear running side float (8b) is a running wheel (5) mounted on the lower side of the wheel (7) and is a body support height detector that slides on the rear lil surface.(8b) is a running wheel (5) (5) A rear traveling center float is provided in the center of the aircraft with the front facing forward; (9) is a guide member (1) mounted above the handle (7);
0) A seedling stand supported so as to be able to reciprocate from side to side via (11), (12) is a planting arm (13) attached to the drive case (4).
) to take out and plant the seedlings from the seedling stand (8), (14) is the engine (1).
(5) A gate-shaped front running float that is installed on the lower side and is a left/right inclination detector whose circular ends slide on the front circular surface. An operation of pivotally supporting the intermediate upper surface of the partial floating float (14) to the aircraft body via a fulcrum shaft (15), connecting the intermediate part of the operating arm (16) to the fulcrum shaft (15), and connecting it to both ends of the arm (16). string(
17) Wrap the middle part around the switching pulley (18),
The pulley (18) is interlocked and connected to the rolling hydraulic pressure switching valve (19), and the switching valve (19) is configured to be switched in conjunction with the left and right rocking of the front traveling flow (14).

As shown in FIGS. 4 and 5, the minsion case (
2) A pitching hydraulic pressure switching valve (20) is fixedly installed on the rear side, and a link (22) (2
3) and the switching valve (20) via the rod (24), so that the switching valve (20) is switched in conjunction with the rear running flow (8a) that swings back and forth due to changes in front ground pressure. It consists of Further, a pitching hydraulic cylinder (25) whose operation is controlled by the pitching hydraulic switching valve (20) is fixedly installed on the upper surface of the minsion case (2), and a rubber material (27) is attached to the tip of the piston loft (26) of the cylinder (page 25). The swing arm (29) (29), which is integrated with the left and right swing cases (6) (6), is provided with a swing opening at both ends of the swing plate (28). ”(30)
(30), and the running wheels (5) are moved in and out under the control of a bi-inching hydraulic cylinder (25), so that the height of the body support can be freely changed. The piston opening (31) is located on the left swing lot (page 30).
A rolling hydraulic cylinder (32) connecting the swing pump (28) is connected and supported at the left end of the swing plate (28), and the horizontal tilt of the aircraft body is corrected by controlling the rolling hydraulic cylinder (32).

The present invention is configured as described above, 1]] During the planting work, if the height of the rice field changes due to changes in the unevenness of the tiller, etc., the front of the rear traveling side float (8a) The aircraft moves up and down following the rice field, operates the pitching hydraulic cylinder (25) via the pinching hydraulic switching valve (20), and moves the running wheels (5) in and out via the swing case (6) to move the aircraft. , while changing the support height and keeping the depth of seedling planting by the planting claws (12) approximately constant, during planting, when the machine tilts to the left and right with respect to the rice field, the front traveling flow) (14) It tilts left and right to follow the aircraft, operates the rolling hydraulic cylinder (32) via the rolling hydraulic switching valve (+9), and changes the amount of entry and exit of the left and right running wheels (5), (5). The attachment supports the aircraft approximately horizontally against the rice field, and I゛1° (the weight of the mounting base (9) and the rotational reaction force of the running wheels (5) are the rear running flow) (
8a) (8b), e.g.
Even if the aircraft sinks into the mud, such as in wet fields or soft wet fields, the rear traveling side float (8a) detects the aircraft support height and maintains the lowest position when the aircraft is tilted backwards for planting. The running wheel (5) based on (8a)
The side floats (8a) and the like can be protruded to support the aircraft above a set height, and prevent the side floats (8a) and the like from going into the ground and becoming unable to travel.

Further, Fig. 6 shows another embodiment, in which the left and right rear traveling side flows (8c) (8c) are supported at both ends of the sensor arm (33), and the rolling hydraulic pressure switching valve (+
9a) is connected to the middle of the sensor arm (33), and detects the left and right inclination of the aircraft by raising and lowering each float (8c) (8c), and also detects the left and right front running flow I (14a)
(+4a) is supported on both ends of the sensor shaft (35) via the eccentric crankshaft (34) (34), and the link (38) (37) and the rod (
The sensor shaft (35) is connected to the sensor shaft (35) via the binching hydraulic cylinder (25), and the support height of the aircraft is adjusted by lowering each float (14a) by y1.
A rolling hydraulic cylinder (32) is supported on a swing plate (28a) fixed to a piston rod (26) of ) to connect the piston rod (31) of the front traveling flow (14a) to control the pitching hydraulic cylinder (25) to adjust the aircraft support height, while the rear traveling side float (8c) The rolling hydraulic cylinder (25) is controlled by lifting and lowering to correct the horizontal inclination of the aircraft and support it horizontally.

Furthermore, FIG. 7 shows another embodiment, in which a fulcrum shaft (
15a) Left and right front floats (14b) on both ends (14b
) is fixedly supported, and a pair of left and right horizontal wings (38) (40) are fixed to the rear end of the front float (+4b), and the wings (39) (40) allow planting to be carried out by leveling the rice field and using buoyancy. In addition to increasing the size, the left and right floats (14b)
The left and right tilting of the aircraft body is detected by raising and lowering the (+4b), and the switching valve (18) is switched to horizontally support the aircraft body as in the above embodiment.

Furthermore, FIG. 8 shows another embodiment, in which a link (21a) of the rear traveling center flow (8b) is
22) (23) and the rod (20) are connected to the pitching hydraulic switching valve (20), and for planting, the above-mentioned flow of leveling the rice field) (8b) Detects the body support height by raising and lowering the front part. , the above-mentioned flow) (8b) The support height of the aircraft body is adjusted so as to keep the front ground pressure constant.

"Effects and Effects of the Invention" As is clear from the above embodiments, the present invention has the following advantages:
The front running "float (14)" (
14a) (+4b) and rear traveling float (8a) (8
b) (8c) etc. The body support height detector and the left and right tilt detectors are arranged separately, and the body support height and left and right tilt detectors (8a) (8b) (8c) (14
014a) (14b) are provided separately, so each of the detection bodies (8a) (8b) (8c) (14) (14a)
(14b) can be placed on the front, back, left, and right sides of the aircraft to stabilize the aircraft's attitude, and in consideration of maximum changes in the weight of the loaded seedlings and longitudinal inclination of the aircraft due to running reaction force, it is placed in the position where it can operate most stably. Each of the detection bodies can be arranged, and each of the detection bodies (8a
), (8b), (8c), (14), (14a), and (14b) provide effects such as the ability to safely and reliably perform body support height control and left/right tilt control.

[Brief explanation of the drawing]

The first view is an overall plan view showing one embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a partial front view, FIG. FIG. 6 is a plan view explanatory diagram showing another embodiment, FIG. 7 is an explanatory diagram showing another embodiment, and FIG. 8 is an explanatory diagram showing another embodiment.
The figure is an explanatory diagram showing another embodiment. (8a)... Rear running side float (aircraft support height detector) (8b)... Rear running center float (aircraft support height detector) (8c)... Rear running side float (left and right tilt detection) body) (+4) (14b)...Front traveling -70-to (left and right tilt sensing body) (14a)...Front traveling float (body support height sensing body)

Claims (1)

[Claims] A posture detection device for a rice transplanter, characterized in that a body support height detector and a left/right inclination detector are separately arranged substantially in front and substantially behind the running wheels.