JPS62134008A - Plowing depth display of rotary cultivator - 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 tillage depth display device for a rotary tiller.

[Prior Art] Taking an agricultural tractor as an example, when working with a rotary plowing depth device connected to the rear end of the vehicle, the worker turns around while the vehicle is stopped and performs the desired plowing. This is done by lowering the rotary tiller when the depth of tillage is reached, and after visually confirming that the rotary tiller has been lowered to the desired tillage depth, the vehicle is driven.

In addition, in so-called position control, in which the level of the rotary tiller relative to the vehicle body is maintained constant, there is a system in which a scale indicating the plowing depth is provided on the guide plate of the lever that operates the rotary tiller to raise and lower the rotary tiller. without).

[Interval point to be solved by the invention 1 However, even with the above-mentioned position control, the operator may want to know whether the tilling depth of the rotary tiller is constant and maintained, and it is difficult to recognize the tilling depth. A technology that can do this is desired.

Therefore, in order to detect the relative distance between the level of the ground immediately before being tilled by the rotary tiller and the rotary tiller, the level of the ground immediately before the rotary tiller is detected relative to the front of the rotary tiller. Although it is conceivable to provide an ultrasonic sensor or the like, in reality, there is a problem that it is difficult to accurately detect the ground level at all times due to unevenness of the ground or weeds.

An object of the present invention is to provide a plowing depth display device which has a structure in which all the sensors are used in a rational manner and can be recognized by a maintenance worker of a rotary plowing depth device.

[Means for solving the rJ+ problem] The feature of the present invention is that the rotary tilling device is connected to the vehicle body so as to be able to rise and fall freely, and the rotary tilling device and the rear 4I+ of the rotary tilling device are vertically relative to each other. A sensor that detects the entire distance is provided, and a detection means is provided that inputs all the ground level values detected by the sensor and outputs it to the full plowing depth display mechanism of the rotary tiller. The level value of the uncultivated ground detected by the sensor with the rotary tilling device set at the specified plowing depth, and the level value detected by the sensor when the vehicle body is driven with the rotary tilling device set at the predetermined plowing depth. and the level value of the raised ground surface, subtract the value of the difference thus determined from the level value of the raised ground surface, and send the value of the subtraction result to the detection means. In place of the detected value from the sensor, there is provided a calculating means for inputting the ground level value, and its functions and effects are as follows.

[Function] When the features of the present invention are configured as shown in FIG. 1, for example,
First, as shown in Figure 2, when the rotary tiller (A) is lowered to a level where the lower end of the rotor (9) touches the ground, the detected value of the ultrasonic sensor (6) is The sensor@ so that the display mechanism (14) displays "0"
By setting the relationship between the rotary tilling device (Alt) and the processing device ftotj, and then lowering the rotary tilling device (Alt-) at a desired plowing depth, the display mechanism a displays the plowing depth (hereinafter referred to as actual plowing depth (P)) for the uncultivated ground (Gp). ).

Also, by operating the first switch αη, the actual plowing depth (
The value of P) is stored in a self-storage element (not shown) built into the processing device αQ, and then the vehicle body (1) is driven while maintaining the rotary tilling device Jt(A) at this plowing depth. As shown in Fig. 3, after the vehicle body (1) has traveled to a position where the sensor detects the level of the ground (GQ) raised by plowing during this run, the second switch is operated. As a result, the value of the plowing depth (hereinafter referred to as plowing depth (Ql)) that has apparently increased due to the heaving is taken into the processing device ae, and at the same time, the processing device 0 Depth (subtract the value of actual plowing depth (P) from the value of Ql, and the value of the result of such subtraction (Q-P=D)?, and further reduce the plowing depth (Ql).
By subtracting it from the value of G and replacing this result (Q-D) with the value from the sensor U, the raised ground
The actual plowing depth (P) is output to the display mechanism q from the calculation result based on the level of Q).

Incidentally, in the illustrated embodiment, the processing device C1l serves as both the detection means (S) and the calculation means FT, and the processing device qO operates according to a preset program so as to be able to serve as both the detection means (S) and the calculation means FT.

〔Effect of the invention〕

Therefore, even though the sensor is installed to detect the entire level of the top surface of the ground that rises due to plowing, accurate plowing depth can be obtained, and accurate plowing can be achieved without being affected by weeds, etc. A plowing depth display device capable of making the operator aware of the plowing depth was obtained. [Example] Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIG. 3, a lift arm (3) is provided at the rear of the vehicle body (1) that swings up and down by the operation of a hydraulic cylinder (2), and a link mechanism ( 4)? A rotary tillage device (Aj) is connected through the rotary tiller to form an agricultural tractor.

A riding/driving section (B) is formed in the center of the vehicle body (1), and a steering wheel (B) is provided in the riding/driving section (B).
5), meter panel (6), seat (7), and seat (7)
) is provided with a lever (8) for raising and lowering the rotary tiller (A).

Incidentally, the lever (8) is connected to the hydraulic cylinder (2).
The lever (
8) Rotary tiller N to the position corresponding to the operating position.
(A) The linkage is configured so that so-called position control, i.e., raising and lowering k, can be performed.

In addition, the rotary tilling device (A) includes a rotor (9) for tilling the ground; αυ and a frame, and detects the entire relative distance between the rotary tiller @ (A) and the rear ground of the rotary tiller (A) with respect to the rear end of the frame (6). , ll are provided.

The sensor q4 is provided to detect the plowing depth of the rotary tillage device (A), and based on the detected value obtained by the sensor a4, the plowing depth of the rotary tillage device (A) on uncultivated land can be adjusted. A digital display mechanism is provided on the meter panel (6) for easy recognition.

That is, as shown in FIG. 1, the sensor a4 is a transmitter (
13a), receivers (1, 3b), and these transmitters (1
3a), a sensor unit (13c) which outputs the detected value to the receiver (13b), and the signal from the sensor unit) (13e) is sent to the Aρ converter αF.
A processing unit is provided which receives input via J.

Further, the processing device 1iaep has a first. Second switch qη.

An input system is formed to input signals from (g), and an output system is formed to output signals to the display mechanism α through the decoder σ1. , Aρ converter 05, processing device a
The system consisting of S, decoder O field, and display mechanism α is called a depth-of-field display device.

And the tillage depth indicator? To operate, the following steps must be followed.

That is, as shown in FIGS. 2 and 3, 1. Rotary tillage drawing (A)'! i=When lowered, the display mechanism a4I displays roj', and the rotary tiller fA
The plowing depth display device is configured so that when the rotary tillage device (Al When the actual plowing depth (P) reached a desired value, the lowering operation is stopped.

Next, by turning on the first switch αη, the actual plowing depth (P) * is stored in the memory element built in the processing device σQ, and the car body (1) is maintained at the plowing depth. The ground was raised by plowing during the full run (GQ)
After traveling a distance where the level of Q can be detected by the sensor, by turning on the second switch α, the value is subtracted from the value stored in the storage element (Q), and the general value obtained by subtracting in this way is stored in the storage element. (9) k, the apparently increased plowing depth (Q
After subtracting from the value of l, the processing device 4 operates to output the result to the entire display mechanism 04).

[Another example]

In addition to the above-described embodiments, the present invention may include, for example, a sensor configured by providing a potentiometer or the like on the rocking shaft of the rear cover so that the plowing depth can be detected from the amount of rocking of the rear cover. Alternatively, it is also possible to construct a hardware structure using a digital IC, a linear IC, or the like.

[Brief explanation of drawings]

The drawings show an embodiment of a tillage depth display device for a rotary tillage device according to the present invention, FIG. 1 is a block diagram showing the configuration of the display device, and FIG. 2 shows a state in which the rotary tillage depth display device is lowered with the vehicle body completely stopped. FIG. 3 is a side view showing the state in which the plow is cultivated, and FIG. (1)...Vehicle body, 03, sensor, α condolence, Ishiki I, i
al , , , , , +-+ A
II kA i-” a8 HO/ Q++ So,
, -# W't key + Il + i/ri (GQ
)・・Swelled ground, (S+・ Detection means, (T)・・
・Calculation means. Agent Patent Attorney Osamu Kitamura Figure 2

Claims (1)

[Claims] A rotary tilling device (A) connected to the vehicle body (1) so as to be able to rise and fall is provided with a sensor ( 13) is provided, and a detection means (S) is provided that outputs the plowing depth of the rotary tiller (A) to the display mechanism (14) by inputting the ground level value detected by the sensor (13), In addition, with the rotary tiller (A) set at a predetermined plowing depth before the vehicle body (1) travels, the level value of the unplowed ground (Gp) detected by the sensor and the rotary tiller at the predetermined plowing depth are measured. With the tilling device (A) set, turn the vehicle body (1
) is run, the difference between the level value of the raised ground surface (GQ) detected by the sensor (13) is determined, and the value of the difference obtained in this way is calculated as the level value of the raised ground surface (GQ) detected by the sensor (13). Calculating means (T) for subtracting from the level value and inputting the resultant value to the detecting means (S) as a ground level value instead of the detected value from the sensor (13);
A plowing depth display device for a rotary tiller equipped with.