JPH04346705A - Riding-type paddy-field working machine - Google Patents

Abstract

PURPOSE:To reduce the unplanted area in the case of gyrating a working machine near a levee by controlling a traveling clutch and a working clutch based on the detection signal of a levee sensor and controlling an actuator and the traveling clutch by the retreating operation. CONSTITUTION:A traveling clutch and a working clutch are disconnected upon detection of the approach of the front end of a machine body to a levee A with a levee sensor 6. When a forward and backward change gear is shifted to the backward-side, the working apparatus 3 is lifted to a prescribed height with an actuator 5 and the traveling clutch is connected.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding rice paddy working machine, such as a riding rice transplanter or a riding direct sowing machine, in which a ground working device is connected to the rear part of the machine by an actuator so that it can be raised and lowered.

0002

[Prior Art] A riding rice transplanter, which is an example of a riding rice paddy working machine, rotates 180 degrees at the edge of the ridge after completing one planting process and starts the next planting. Get on the journey. In this case, while planting, bring the aircraft close to the edge of the ridge, quickly stop and raise the seedling planting device (equivalent to ground work device), and then make a small turn to start the next planting process. It is preferable to start early. By doing this, the unplanted area at the edge of the ridge becomes smaller, making it easier to plant the unplanted area later.

0003

[Problems to be Solved by the Invention] In the above-mentioned turning operation at the edge of a ridge, it is difficult to plan the timing to stop and raise the seedling planting device and to start the steering operation of the front wheels.
Both operations must be performed almost simultaneously, so
In many cases, this can only be done by an experienced person. Therefore, unskilled workers often stop and raise the seedling planting device too quickly when they reach the edge of the ridge, which increases the unplanted area at the edge of the ridge. It takes a lot of effort to plant the planting area. An object of the present invention is to provide a riding type paddy field working machine that can be configured so that even an unskilled person can turn at the edge of a ridge so that the unplanted area is small.

0004

[Means for Solving the Problems] The feature of the present invention is that the riding-type paddy field working machine as described above is constructed as follows. In other words, there is a ridge sensor that detects when the front end of the aircraft has approached the ridge at close range, a first control means that disengages and operates the traveling clutch for the traveling system based on the detection of the ridge sensor, and and a second control means for disengaging and operating a work clutch for the work device system, and after the first and second control means are activated, the actuator A third control means for raising the ground work device to a predetermined high position, and a fourth control means for engaging and operating a travel clutch in conjunction with the operation to the reverse side.

[0005]

[Operation] With the above-mentioned configuration, for example, as shown in Fig. 1, when the aircraft moves to the left in the paper while performing ground work and approaches the ridge A at close range (for example, the front end of the aircraft approaches the ridge A).
(in contact with the ground), the travel clutch is automatically disengaged based on the detection by the ridge sensor 6 and the aircraft stops at that position, and the work clutch is automatically disengaged and the ground work device 3 is activated. Stop. With this configuration, even unskilled workers do not need to plan the timing to stop and raise the ground work equipment and start steering the nose wheels, and the ridge sensor will automatically operate the aircraft until it stops. Just keep it going straight. Then, work (planting seedlings, direct sowing of seeds, etc.) is being carried out by the ground work device 3 up to a position very close to ridge A (a position away from ridge A by approximately the length of the aircraft). .

However, in this state, it is impossible to turn around the ridge, so the operator operates the forward/reverse switching device to the reverse side. In this way, the ground work device 3 is automatically raised to a predetermined high position, and the traveling clutch is automatically engaged and the aircraft starts moving backward. When the aircraft moves backward to a position where it can turn at the edge of the ridge, the forward/reverse switching device is operated to the forward side and the steering wheels (front wheel 1 or rear wheel 2) are steered to make a turn at the edge of the ridge. It makes a turn. When the turning at the edge of the ridge is completed, the ground work device 3 is lowered and the work clutch is engaged to begin the next work process.

[0007]

[Effects of the Invention] As described above, the aircraft moves straight until it automatically stops using the ridge sensor, without having to plan the timing of stopping and raising the ground work equipment and steering the nose wheels at the edge of the ridge. This allows even unskilled workers to easily operate the ground work equipment even at positions very close to the ridge, making subsequent work easier. We were able to improve work efficiency. When the aircraft automatically stops at the edge of a ridge and then moves backward, the operator simply operates the forward/reverse switching device to the reverse side, and the ground handling device is automatically raised and the travel clutch is automatically engaged. Since it can be operated, maneuverability when turning is also improved.

[0008]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. As shown in FIG. 1, a seedling planting device 3 (corresponding to a ground work device) is connected to a link mechanism 4 and a hydraulic cylinder 5 (actuator) at the rear of the aircraft supported by steerable front wheels 1 and rear wheels 2. (corresponding to
A riding rice transplanter, which is an example of a riding rice paddy working machine, is configured. The front end of the aircraft has a ridge A.
A contact type ridge sensor 6 is provided to detect when the ridge approaches the ridge at close range.

Next, the flow of power from the engine 7 will be explained. As shown in Fig. 2, the power from the engine 7 is divided into the driving system and the planting system from the main clutch 8 (corresponding to the traveling clutch), and the power for the planting system is transmitted from the planting clutch 9 (corresponding to the working clutch). The information is transmitted to the seedling planting device 3. The driving system is powered by a hydraulic forward clutch 10 that transmits forward rotational power.
(corresponding to a forward/reverse switching device) and a hydraulic reverse clutch 11 (corresponding to a forward/reverse switching device) that transmits reversing power in parallel, and the power from the forward or reverse clutches 10, 11 is transmitted in parallel to It is transmitted from the transmission 12 to the front wheels 1 and rear wheels 2.

Next, the flow of control at the edge of the ridge in this riding type rice transplanter will be explained. As shown in Figures 3 and 1, while performing planting work, the aircraft approaches ridge A (
When the forward/reverse lever 13 is operated to the forward side and the forward clutch 10 is engaged and operated), when the ridge sensor 6 at the front end of the fuselage comes into contact with the ridge A (step S1), the main clutch 8 is automatically disengaged. At the same time (step S2) (corresponding to the first control means), the planting clutch 9 is automatically disconnected (step S3) (corresponding to the second control means). As a result, the traveling system and the planting system all stop while the front end of the aircraft approaches the ridge A at a very close distance.

As shown in FIG. 1, the aircraft body is provided with a changeover switch 14, and when the changeover switch 14 is turned on and operated while stopped at the edge of a ridge, the changeover switch 1
The main clutch 8 is automatically engaged and operated only while clutch 4 is engaged (steps S4 and S5). This changeover switch 14 is biased toward the off side, so if you want to move the aircraft forward slightly, you only need to turn on and operate the changeover switch 14, and when you release your hand from the changeover switch 14, the main clutch 8 is turned off. The aircraft stops. In this case, since the planting clutch 9 is disengaged, the seedling planting device 3 does not operate.

Thereafter, when the operator operates the forward/reverse lever 13 to the reverse side and engages the reverse clutch 11 (step S6), the hydraulic cylinder 5 automatically moves the seedling planting device 3 to a predetermined high position. At the same time as the raising operation is performed, the marker is automatically retracted (step S7) (corresponding to the third control means). Next, the main clutch 8 is automatically engaged (step S8) (corresponding to the fourth control means), and the aircraft automatically starts moving backwards. If you move backward by a distance of (step S
9, S10), the forward/reverse lever 13 is automatically operated to the forward side and the aircraft starts moving forward (step S11). In the case of this backward movement, the rear wheels 2 are set to be located between the planting rows of the seedling planting device 3, so that the rear wheels 2 will not step on the planted seedlings.

When the aircraft starts moving forward in this way, the operator rotates the control handle 15 shown in FIG.
Perform the steering operation and turn 180° at the edge of the ridge. and,
The seedling planting device 3 is lowered, the planting clutch 9 is engaged, and the next planting process begins.

[Another Embodiment] In the above embodiment, the main clutch 8 for both the traveling system and the planting system was operated on and off.
A dedicated running clutch for the running system may be provided on the downstream side of the main clutch 8, and by turning on and off this running clutch, operations such as automatic stopping at the edge of a ridge may be performed. The ridge sensor 6 shown in FIG. 1 is not a contact type, but may be a non-contact type using ultrasonic waves or the like. In steps S9 and S10 of FIG. 3, the predetermined short time period for reversing may be configured to be adjustable to a longer or shorter time, so that the reversing distance may be adjusted. Then, in step S11 shown in FIG.
It may also be configured to operate to the forward side. The present invention is applicable not only to a riding type rice transplanter but also to a riding type direct sowing machine in which a direct sowing machine for sowing seeds directly into rice fields is connected to the rear of the machine so that it can be raised and lowered. The present invention can also be applied to a riding type rice transplanter or a riding type direct seeding machine that turns by steering the rear wheels 2 instead of the front wheels 1.

[0015] Note that although reference numerals are written in the claims section for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

[Figure 1] Side view showing the riding rice transplanter reaching the edge of the ridge

[Figure 2] Block diagram showing the flow of power from the engine

[
Figure 3: Flowchart showing the flow of control at the edge of the ridge

[Explanation of symbols]

3 Ground work device 5 Actuator 6
Ridge sensor 8 Travel clutch 9 Work clutches 10, 11 Forward/reverse switching device A Ridge

Claims (1)

[Claims] Claim 1: A riding paddy field work machine in which a ground work device (3) is connected to the rear part of the machine body by an actuator (5) so that it can be raised and lowered, and when the front end of the machine body approaches the ridge (A) at close range. A ridge sensor (6) that detects the ridge, a first control means that disconnects and operates the traveling clutch (8) for the traveling system based on the detection of the ridge sensor (6), and a second control means for disengaging and operating the work clutch (9) for the work device (3) system, and after the operation of the first and second control means, a forward/reverse switching device (10) for the travel system; (11) a third control means for raising the ground working device (3) to a predetermined high position by the actuator (5) in conjunction with the operation in the reverse direction; and fourth control means for engaging and operating the traveling clutch (8).