JPH02273102A - Walking-type working machine in paddy field - Google Patents

Abstract

PURPOSE:To perform necessary operation for turning action with simple operation by switching a state-switching actuator corresponding to traveling device and operating device according to detected result of lifting operation to labor side grip parts of operating handle. CONSTITUTION:An accelerator operating lever 16 of labor side as a state actuator switching an accelerator arm 21 to low speed side, a shift arm 23 as a state-switching actuator to a main speed-varying device 24, a clutch arm 25A as a state-switching actuator of a transplanting clutch 25 and a lock-shaking piece 28 as a state-switching actuator setting a line-drawing marker 9 to acting state are respectively connected to labor side grip parts 12B of an operating handle 12 with release wires 22A, 22B, 22C and 22D. By this modification, switching of labor side accelerator-operating lever to low speed side, switching of traveling device to turning action state in low speed side and switching of operating devices such as wire-drawing marker and transplanting device to a state necessary for turning action, are simultaneously performed only by lifting operation of labor side grip parts 12B.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a walking type paddy field working machine.

[Conventional technology]

Conventionally, in this type of walking-type paddy field work machine, when operating the turning operation at the edge of a ridge, etc., it was necessary to disengage the planting clutch, raise the line marking marker, or switch the running speed to a low speed side. In order to do this, each person operated a dedicated control lever.

[Problem to be solved by the invention]

Therefore, each time the driver starts a turning operation, he or she must operate several types of operating levers within a short period of time, which actually imposes a heavy workload.

An object of the present invention is to provide a steering wheel that can be easily held and used to carry out the operations necessary for turning by simply modifying the steering handle.

[Means to solve the problem]

The characteristic configuration according to the present invention includes a detection mechanism that detects a lifting operation on the hand grip portion of the operating handle, and acts on the state switching actuator for the traveling device and the working device based on the detection result of the detection mechanism, so that the operating device can move. A mechanism is provided to automatically switch the device and working device to the state necessary for swing operation, and its effects are as follows.

[For production]

To explain the operation based on FIG. 1, for example, the accelerator operation lever (16) on the hand side as a state switching actuator and the control knob (12) switch the accelerator arm (21) on the engine side to the low speed side. ) on the hand side grip (
12B) by a release wire (22A), and when the hand side grip part (12B) is lifted when turning around the ridge, the hand side grip part (12B) is moved against the base end of the operating handle (12A). ) swings to switch the hand side accelerator operating lever (16) to the low speed side.

In this manner, the shift arm (23) as a state switching actuator for the main transmission (24) and the hand grip portion (12B) are linked by the release wire (22A), and the traveling device is operated to swing at a low speed. The clutch arm (25A) as a state switching actuator of the planting clutch (25) and the hand grip portion (12B) can be connected to the release wire (22C).
), or the lock swinging piece (28) serving as a state switching actuator for setting the line marker (9) to the active state and the hand grip portion (12B) are linked by a release wire (22D). By adopting such a form, it is possible to switch working devices such as a line marker and a planting device to a state necessary for turning operation.

〔Effect of the invention〕

Therefore, the traveling device and the working device can be switched to the state necessary for the turning operation by simply lifting the hand grip portion, and operability can be improved.

However, as a structure similar to this type, there is a structure in which the line marking marker is retired based on the planting clutch disengagement operation, as disclosed in, for example, Japanese Utility Model Publication No. 63-43843, but the present invention In this case, the rice transplanter utilizes the natural movement of the driver, who lifts and operates the control handle in order to turn the entire rice transplanter in a forward-down position, which has been customary in the past. The present invention is advantageous in terms of operability over conventional configurations in that the operator does not have to take his or her hand off the steering handle, unlike when operating an attached clutch lever.

[First Embodiment] As shown in Fig. 4, the walking type paddy field work machine includes an engine (1) and an engine (1) in the front part of the traveling machine frame.
A belt-transmitted transmission, a wheel transmission case (4), (4), which is pivotally supported on both sides of the transmission case (2) that houses this transmission so as to be able to swing vertically. .

Propulsion wheels (5) each attached to the tip of (4).

(5), a transmission case (3) extending rearward from the transmission case (2), a two-row planting mechanism (6) equipped on this transmission case (3), (6), the transmission case (3); It is made up of a seedling stand (7), a ground leveling float (8), a line marker (9), and a control unit (lO) that are attached to the rear end of the case (3), and is located between the front and back of the traveling body. Fertilizer application device (1
1).

The ground leveling float (8) is supported so as to be able to roll freely around the longitudinal axis (Y) of the rear fuselage and to be able to swing vertically around the horizontal axis (X), and is connected to a rolling linkage mechanism (3) and a lifting linkage. It is linked to a rolling valve and a lifting valve (33) via a mechanism (32). Therefore, taking elevating control as an example, the propulsion wheel (5) is used to maintain a constant planting depth based on the vertical movement of the soil leveling float (8).
, (5) A lifting control device is provided to raise and lower the. In addition, (34) in FIG. 1 is a spring that sets the sensitivity for raising and lowering the leveling float (8).

The control unit (lO) is equipped with a control handle (12), a main clutch lever (13), etc., and a main shift lever (14) etc. in front of the seedling stand (7). The operating handle (12) is integrally formed in a U-shape with a fixed base end (12A) erected from the rear end of the transmission case (3), and is capable of vertically swinging around the horizontal axis (Z). It consists of a pair of left and right hand side grips (12B), (12B) connected to the left and right hand side grips (12B), (12B), and a left and right steering clutch (17), (17) grip lever. (15).

(15) and the right hand side grip portion (12B) are provided with an accelerator operating lever (16).

The hand-side grip portions (12B), (12B) are integrally movable up and down, and the hand-side grip portions (12B), (12B) are integrally movable up and down.
A drive arm (18) and a base end (12) that swing together with B).
A) is biased downward by a biasing spring (19) applied between the base and the base plate. In Figure 3, (20) is the hand grip (
12B), (12B) is the upper limit setting tool, and by lifting it further using the hit of the upper limit setting tool, the rice transplanter itself can be lifted. In addition, the hand side grip part (12B), (
Although not shown, a friction holding mechanism is provided at the swinging fulcrum of 12B), and the structure is such that it will not swing upward unless the driver lifts it at will.

Next, a configuration for switching the traveling device and the working device to the required state will be explained. As shown in FIG. 1, i) the engine side accelerator arm (21) and the hand side grip part (12B);
The accelerator operating lever (16) is linked with a wire, and the accelerator operating lever (16) and the drive arm (18) are linked with a release wire (22A),
When the hand grip portions (12B), (12B) are lifted, the accelerator operating lever (16) is operated to the low speed side.

ii) Connect the shift arm (23) of the main transmission (24) etc. and the drive arm (18) with a release wire (22B)
Similarly, the hand grip portion (12B).

(12B) can be lifted to downshift and switch to a low speed driving state.

1ii) Also in the planting clutch (25), the clutch arm (25A) as a state switching actuator and the drive arm (18) are connected by a release wire (22C), and the hand side grip part (12B), (12B) is connected. By lifting the button, the planting clutch (25) is disengaged.

iv) Next, to explain the configuration for raising and retracting the line marker (9) to a non-operating state during a turn, the line marker (9) supported on the aircraft frame so as to be able to swing up and down can be moved into an active position and a non-operating position. A manual operation lever (27) is provided for switching to the line drawing marker (9).
A locking swinging piece (28) is provided to maintain the operating position.

The drive arm (1
8) with a release wire (22D) and lift the hand grip portions (12B), (12B), the lock swinging piece (28) operates in the unlocking direction, and the line marker (9) Switch to the upward retreat state.

(2) Next, the swinging arm (35) as a state switching actuator for adjusting the spring is connected to the spring (34) for adjusting the sensitivity of the earth leveling float (8) on the proximal side via the release wire (22E). Grip part (12B)
When the hand grip part (12B) is lifted up, the force of the spring pressing the float (8) becomes weaker, and the control sensitivity becomes more sensitive.
) can be configured to swing upward and push down the propulsion wheels (8), (8) to lift the traveling body, thereby reducing the sliding resistance of the ground leveling float (8), etc. during ridge turning.

As described above, the accelerator operating lever (16), the shift arm (23) for the main transmission (24), etc. are referred to as a state switching actuator. Further, the clutch arm (25A), lock swing piece (28), swing arm (35), etc. for the planting clutch (25) are referred to as a state switching actuator for the working device. A release wire (22) connects the drive arm (18) and the actuator.
A)...etc., the hand grip part (12B), (12
B) is referred to as a detection mechanism (22) that detects a lifting operation and a mechanism that automatically switches to the state necessary for turning operation.

[Second Embodiment] As shown in FIGS. 5 and 6, the control handle (12)
Alternatively, the left and right hand grips (12B), (12B) may be independently movable up and down with respect to the fixed base end (12A), and may be constructed as follows.

In other words, the left and right drive arms (18A), (18
B) and left and right steering clutches (17A).

(17B), the left drive arm (18A) connects the right steering clutch (17B), and the right drive arm (18B)
) is linked to the left steering clutch (17A),
Connect with release wires (30A) and (30B),
When turning at the edge of a ridge, use the hand grip part (12B) on the outside of the turn.
When lifted, the leading aircraft tilts forward downward and toward the inside of the turn, and the steering clutch (17) on the inside of the turn is disengaged, cutting off power and facilitating the turning operation. In this case, as shown in FIG. 5, the drive arm (18A),
(18B) and the accelerator lever (16) are linked with the release wire (36), and either hand grip part (12B)
), (12B) is lifted, the accelerator is operated to the low speed side. Also, although not shown, a planting clutch (25) and a main transmission (24) are provided as in the first embodiment.
), the line drawing marker (26), and the ground leveling float (8) may be linked to the drive arms (18A) and (18B) of the hand grip section so that the ground leveling float (8) is switched to the state necessary for turning operation. .

[Another example]

■ The hand grip part (12) serves as the operating handle (12).
B) and the base end (12A) may be integrally swung relative to the body frame or the like.

■ The handle on the hand side (12
B) may slide relative to the base end (12A), and the actuator may be switched to the state necessary for the swing operation by the slide.

■ In the above case, an example was shown in which a release wire was used, but the operating handle (12) itself is fixed to the aircraft frame, and when the operator lifts it up, the handle on the hand side (12)
B), (12B) is strained, the strain is detected by a detection mechanism (22) such as a strain gauge, and an actuator such as a hydraulic cylinder that switches the state of a planting clutch (25) etc. is actuated. It's okay. In this case, the mechanism for automatically switching the actuator to the state necessary for the swing operation is a control device including a microcomputer or the like.

(2) A configuration may be adopted in which a sensor detects the state in which the hand grip portion (12B) swings or slides with respect to the base end portion (12A).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the walking type paddy field work machine according to the present invention,
Fig. 1 is a configuration diagram of the control hand that switches to the state necessary for swing operation, Fig. 2 is a side view showing the lifting state of the hand grip, and Fig. 3 is a longitudinal section that regulates the lifting limit of the hand grip. 4 is an overall side view, FIG. 5 is a control configuration diagram for switching to the state necessary for the turning operation of another embodiment, and FIG. 6 is a longitudinal sectional view showing the structure of the control handle section in FIG. 5. be. (12)... Control handle, (22)...
...Detection mechanism. , 12B 2nd close

Claims (1)

[Claims] A detection mechanism (22) is provided for detecting a lifting operation on the hand grip portion (12B) of the operating handle (12), and a state switching actuator for the traveling device and the working device is activated based on the detection result of the detection mechanism (22). A walk-behind paddy field working machine is equipped with a mechanism that automatically switches the traveling device and working device to the state necessary for swing operation.