JPS6332403B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a multiple plow having a relatively large width in the front and rear and left and right directions, with a pair of left and right lower links,
The present invention relates to a riding type cultivator connected to a tractor body via a single top link.

With this type of riding power tiller, even if the tractor body slightly pitches or rolls during tilling work on sloped or undulating land, the longitudinal and lateral postures of the multiple plows will be greatly affected. As a result, there were problems that tended to lead to various troubles such as the occurrence of shallowly cultivated areas, uncultivated areas, and abnormal increases in load.

In view of the above-mentioned circumstances, the present invention has been developed to ensure that the desired plowing work can be carried out reliably and efficiently, without causing problems such as shallowly cultivated areas, uncultivated areas, or abnormal increases in load, regardless of pitching or rolling of the tractor body.・The purpose is to ensure that things can be carried out smoothly.

That is, the features of the plow attitude control device for a riding power cultivator according to the present invention include a pair of sensor rods on the front and rear and left and right sides, respectively, which have a grounding body attached to the lower end and are supported by the frame of the plow so as to be able to rise and fall freely, and these pair of sensor rods. A sensor detects the longitudinal and lateral inclination of the plow with respect to the ground, and a sensor detects the longitudinal and lateral inclination of the plow with respect to the ground, using a detecting rod for detecting longitudinal and lateral posture, which is pivotally attached to the and a posture holding device that adjusts the length of the top link based on the detection result of the longitudinal inclination detection sensor, and a relative rocking of the lower link based on the detection result of the left and right inclination detection sensor. It is equipped with a left and right posture holding device that adjusts the angle, and the following effects can be obtained.

In other words, it is possible to automatically maintain the longitudinal and lateral postures of the multi-plow at a nearly constant level regardless of pitching or rolling of the tractor body during plowing work on sloped or undulating land. The desired tilling work can be carried out reliably, efficiently, and smoothly without causing work troubles such as the occurrence of cracks or an abnormal increase in load. Moreover,
There is no need for special operations to control the posture of such a multi-plow, and even workers who are not familiar with machines can now perform the work advantageously.

Additionally, if one of the front and rear pairs of sensors is configured to double as one of the left and right pairs of sensors, the number of sensors and their mounting parts can be reduced due to this dual use. Therefore, there is an advantage that the entire detection device can be constructed easily and inexpensively.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in Figures 1 and 2, the tractor body A
A multi-plow plow 1, in which three plow members 1A are arranged side by side at appropriate intervals in the front and rear and left and right directions, is connected to the rear of the plow by one top link 2 and a pair of left and right lower links 3, 3. A pair of left and right lift arms 6, 6 and the lower link 3, which are pivotally connected to each other so as to be able to rise and fall freely, and are driven and oscillated in the vertical direction by a hydraulic cylinder 5 built into the transmission case 4 of the tractor main body A. 3 are interlocked and connected via lift rods 7, 7, and thus the hydraulic cylinder 5
In a riding type cultivator configured to drive and lower the multi-plow 1 by the expansion and contraction operation of the multi-plow, three sensors 8A, 8B, 8C forming a pair on the front and rear and left and right sides detect the height of the multi-plow 1 above the ground. A mechanism 9 is provided which automatically controls the height of the multi-plow 1 from the ground in the longitudinal and lateral directions to be constant or almost constant based on the detection results of the sensors 8A, 8B, and 8C. .

The sensors 8A and 8B that form a pair in the front-rear direction
Sensors 8, one of which forms a pair in the left and right direction
These sensors 8A, 8B, and 8C are configured as follows.

That is, sensor rods 11A, 11B, 11 have grounding sled bodies 10A, 10B, 10C pivotally attached to the lower end portions of the frame 1B of the multiple plow 1.
C is slidably inserted and supported in the vertical direction,
Springs 12A, 12B, 1 that bias the sensor rods 11A, 11B, 11C downward.
2C, and a rod 1 along the longitudinal and lateral directions of the fuselage, which is pivotally connected to the sensor rod 11A located on the front left side in the direction of travel of the fuselage.
3 and 14 are pivotally connected near the upper ends of sensor rods 11B and 11C located on the rear left and front right, and sensor rods 11B located on the rear left and front right. , 11C includes an on/off switch S 1 , which detects changes in the posture of the multi-plow 1 with respect to the ground in the front-rear direction and left-right direction by contact with the front-rear rod 13 and the left-right rod ₁₄ . S ₂ , S ₃ and S ₄ are provided.

The automatic control mechanism 9 is constructed as follows.

That is, when the first switch _S1 is turned on by lowering the front left sensor rod 11A by more than a certain level or by raising the rear left sensor rod 11B by more than a certain level, the multiple plow 1 moves from the lower front to the upper rear. When it is determined that the plow is in a tilted position and the second switch _S2 is turned on due to the front left sensor rod 11A rising above a certain level or the rear left sensor rod 11B descending above a certain level, the multiple plow is turned on. The first controller 15 determines that the robot 1 is in a tilted posture from the upper front to the lower rear. When the 3 switch _S3 is turned on, it is determined that the multiple plow 1 is in an inclined position from the lower left to the upper right, and the front left sensor rod 11
When A rises above a certain level or the front right sensor rod 11C falls above a certain level, the fourth switch is activated.
A second controller 16 is provided which determines that the multi-plow 1 is in an inclined position from the upper left to the lower right when S ₄ is turned on, and a Hydraulic cylinders 17 and 18 are respectively installed as posture holding devices, and the height above the ground in the longitudinal and lateral directions of the multi-plow 1 is determined based on the detection results of the sensors 8A, 8B and 8C. The control valves V ₁ ,
It is configured to output a control signal for _V2 .

In addition, the sensor rods 11A, 11B, 11
At the lower end of C, there is an idling wheel 22 instead of a grounding sled.
A, 22B, and 22C can also be installed.

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 the drawing]

The drawings show an embodiment of the plow attitude control device for a riding cultivator according to the present invention, in which Fig. 1 is a rear side view, Fig. 2 is a plan view of the main part, and Fig. 3 is an attitude control system diagram. . A...Tractor body, 1...Multiple plow, 8
A, 8B, 8C...Sensor, 1B...Plow frame, 2...Top link, 3...Lower link, 10A, 10B, 10C...Grounding body, 11
A, 11B, 11C...sensor rod, 13,
14... Detection rod, 17... Said attitude holding device, 18... Left and right attitude holding device, S ₁ , S ₂ , S ₃ , S ₄
...Switch.

Claims (1)

[Claims] 1. A multiple plow 1 having a relatively large width in the front and rear and left and right directions, with a pair of left and right lower links 3, 3,
Tractor body A via one top link 2
In the riding-type cultivator connected to the plow 1, a pair of sensor rods 11A, 11 are mounted on the lower end of the plow 1 and supported by the frame 1B of the plow 1 so as to be able to rise and fall freely.
B, 11C and this pair of sensor rods 11
A, 11B, 11C are pivotably mounted to detect longitudinal and lateral posture detection rods 13, 14, and a switch _S1 for detecting an angular change of more than a certain level of the detection rods 13, 14 with respect to the elevating rods 11A, 11B, 11C. _{. _ _} Front and back posture holding device 17 that adjusts the length of 2
and a left-right attitude holding device 18 that adjusts the relative swing angle of the lower links 3, 3 based on the detection result of a left-right inclination detection sensor. 2 One of the front and rear pairs of sensors 8A, 8B is the left and right pair of sensors 8A, 8C.
A plow attitude control device in a riding-type cultivator according to claim 1, which is configured to be used also as one of the plow cultivators. 3. The plow attitude control device in a riding-type cultivator according to claim 1 or 2, wherein the sensors 8A, 8B, and 8C are of an on-off type.