JPS61128805A - Walking type tiller - 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] [Industrial application field] The present invention relates to a walk-behind cultivator.

[Conventional technology]

In walk-behind tillers, automatic tillage depth adjustment that maintains the tillage depth almost constant regardless of the unevenness of the ground, and a rotary that automatically stops driving when the tillage rotary rises to a set height -1 Automatic shutdown has already been developed.

Conventional machines with these automatic and dynamic controls and configurations are not equipped with either an automatic plowing depth adjustment configuration or an automatic tiller/tally automatic stop configuration, resulting in the following disadvantages: there were.

[Problem that the invention seeks to solve]

In other words, for those with an automatic plowing depth adjustment configuration,
When the aircraft is turning, etc., in order to stop the rotary after it has levitated above the ground, it is necessary to operate the operating tools for that purpose, which reduces the efficiency of the operations of the wrestlers. on the other hand,
For those with a rotary bottom automatic stop configuration, plowing,
The depth adjustment had to be done manually, which not only took time and effort, but also made it difficult to adjust the plowing depth accurately, resulting in poor finishing accuracy.

An object of the present invention is to enable the plowing depth cylinder part, the tally stop, and the horse zero to be performed automatically, and to have a simple structure.

[Means for solving problems]

The walk-behind tiller according to the present invention is characterized by being equipped with a sensor that detects the height of the tilling rotary above the ground, and a drive mechanism that raises and lowers the ground body for setting the tilling depth.
@r First drive mechanism □ is automatically operated so that the height detected by the sensor is within a set range, and a first linkage mechanism that is linked to the sensor; and t, a clutch for the tally. A third linking mechanism is provided which is linked to the sensor and is automatically cut when the height detected by the sensor exceeds a set value, and its functions and effects are as follows. .

[For production]

Based on the information from the sensor, the first linkage mechanism operates so that the plowing depth is within the set range, regardless of how many seconds it takes for the traveling device to enter the four parts of the ground or ride on a convex part of the ground.
The drive mechanism is automatically operated to raise and lower the plowing depth setting grounding body.

If the above-mentioned setting detection/output value is set to a desired value such as the height of the rotary above the ground, when the rotary is raised to the desired height, the second continuous roofing mechanism will automatically operate based on the information from the sensor. Disengage the clutch.

〔Effect of the invention〕

The plowing depth is almost constant regardless of the unevenness and hardness of the ground, resulting in a highly accurate finish.Moreover, there is no need to adjust the plowing depth or stop the raised rotary. Now, I can now work more efficiently from an operational standpoint.

Furthermore, the sensor for tillage depth control and the sensor for automatic rotary stop can be used together, making it possible to simplify the structure in terms of detection configuration, which is advantageous from an economic standpoint.

〔Example〕

As shown in Figure 2, there are running wheels (1), an engine (2),
), a steering wheel (3), a battery (4), a tail wheel (6) as a grounding body for setting the tilling rotary (5) and the tilling depth at the rear of the self-propelled aircraft with a battery (4). A walking type cultivator is constituted by configurations 1 to 1, in which a large tilling device (7) is installed in series, and rotational force is transmitted from the i-running machine body to the tilling device (7).

As shown in FIG. 1, the support shaft (8)' of the tail wheel (6) is adjusted up and down by a screw mechanism (9), and
It is slidably attached to the fuselage frame αω like a stone to fix it in the adjustment position, and an electric motor (12) is interlocked with the operating arm (98) of the screw mechanism 19)' via a deceleration mechanism αD, - The structure is such that the ground tail wheel is raised and lowered by the rotation (2).Meanwhile, the sensor par α is arranged so that its free end touches the ground at a location located in front of the tilling rotary (5). At the same time, the spring α (
The rotary rotary transmission case j is pivoted to freely swing up and down around the shaft center (P) with the face biased downward, and the sensor par 03 detects the ground height of the tilling rotary (5). It is configured to do so. In other words, the ground officials of the tillage rotary (5) are urged to judge the installation of the sensor par a9 based on the angle.

Then, sensor par 03 is connected to a switch (I!), and multiple terminals (16m) of this switch αe.
, (18b), some of (16c) (16b), (
16c) The electric motor a is connected to the drive circuit OI of the motor 02 through the first control circuit α, which is connected to the K, so that the height of the protrusion due to the QIK is within the set range. It is automatically operated and configured like a stone. That is, knowing that both of the terminals (16b) and (16c) are in the cut position, it is determined that the height detected by the sensor par (I-wound) is within the set range, and at this time, the drive circuit 'a Sensor par 03 outputs a signal to stop motor az at the mark, and knowing that either K of IITE terminals (16b) or (16c) is in the ON position.
If it is determined that the detected height is outside the setting range,
Knowing which terminal (16b) or (16c) is in the input position, it is possible to judge the direction in which the grounding tail wheel (6) should be operated, and at this time, when the drive circuit is at 0 seconds, the motor az is switched to the tail wheel (6). ) The seventh control circuit (17+ is configured [2] so as to output a signal to drive the motor to the rising side or to the falling side.

Regardless of whether the wheel (1) enters a concave part of the ground or rides up a convex part of the ground, or changes in the subsidence depth of the ground tail wheel (6), the tilling rotor IJ-151
The ground tail wheel (6) is automatically controlled to raise and lower the aircraft so that the depth of penetration into the ground is within the set pressure range, and the plowing depth is maintained almost constant [2].

The non-clutch a9 for the tilling rotary +51 K is equipped with an electromagnetic solenoid (a) for turning it on and off,
Then, the sensor par (+31) is set to the switch α
e1 This switch (1υ) is connected to some terminals (16m) of the 9th control circuit (211) and II is connected to the drive circuit (22) of the solenoid (company), so that the tilling rotary (5) floats above the ground. When the sensor reaches a detection state higher than the height set as a sensor (13+), the clutch 0
9 is automatically disengaged, and when sensor par 03 reaches a detection state below the set height, the clutch is automatically engaged and operated. That is, l1Tf! When the terminal (16a) is in the engaged state, it is determined that the sensor par (131) is in the detection state above the set height, and at this time a signal is output to the kit drive circuit @ to disengage the clutch α. , and if the terminal (16a) is in the off position, it is determined that the sensor per (131) is in the detection state below the set height, and at this time, the clutch 0I is turned on in the drive circuit. The second controller path 121) is configured to output a signal according to the desired condition.

In other words, just by raising the tilling rotary (5) to the above-ground position, the rotary (5) will automatically stop driving, and by lowering the tilling rotary (5) so that it plunges into the ground. Then, the rotary (5) is automatically driven.

[Another example]

To enable detection of the height above the ground of the tillage rotary (5),
Instead of the sensor par (1 m), a non-contact type such as an ultrasonic type may be used, and these are simply referred to as sensor 03.

Further, as the sensor, as shown in the above embodiment,
If the area located in front of the rotary (5) is configured to be the measurement target area, the sensor par will be stable at the area before plowing because it is difficult to sink or the sound waves will not be reflected diffusely. Although it is advantageous to have higher detection accuracy, it may also be configured to measure at a plowed field.

The means for linking the sensor, electric motor, and clutch are shown in the previous I! l! A mechanical configuration may be adopted for the electric sword structure voltage configuration, and the first control circuit αη will be referred to as the first linkage mechanism α, and the second control circuit (21) will be referred to as the second linkage mechanism.

A hydraulic cylinder may be used instead of the electric motor a21y, and these are referred to as a drive mechanism (12+).

[Brief explanation of drawings]

The drawings show an embodiment of the walk-behind cultivator according to the present invention, and the first
The figure is a control system diagram, and FIG. 8 is a side view of the entire walk-behind cultivator. (5)...... tilling rotor l -+4;l (61
・・・・・・Grounding body for setting plowing depth, (121・・・・・・
Drive mechanism, α3...Sensor, αη...
・First linkage mechanism, a-type clutch, (21)
・・・・・・Part 1! mechanism. ”

Claims (1)

[Claims] [1] A sensor (13) for detecting the height of the tillage rotary (5) above the ground and a drive mechanism (12) for raising and lowering the tillage depth setting ground body (6) are provided, a first linkage mechanism (17) in which the drive mechanism (12) is linked to the sensor (13) in a state where the height detected by the sensor (13) is automatically operated such that the height detected by the sensor (13) is within a set range; A second linkage mechanism (21) in which the clutch (19) for the rotary (5) is linked to the sensor (13) in such a state that the clutch (19) is automatically disconnected when the height detected by the sensor (13) exceeds a set value. A walk-behind tiller equipped with [2] The walk-behind cultivator according to claim 1, wherein the sensor (13) is a sensor that measures a location located in front of the rotary (5).