JPH088563Y2 - Arrangement structure of automatic tilling depth control sensor of rotary device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for arranging an automatic tilling depth control sensor for a rotary device.

[0002]

2. Description of the Related Art Conventionally, a rotary device connected to the rear of a tractor is constructed so that the plowing depth is automatically and appropriately adjusted by an automatic plowing depth control sensor so that the plowing depth is always kept constant. .

That is, in the automatic tilling depth control sensor, the sensor body is mounted on the rotary cover of the rotary device,
The sensing rod tip protruding from the sensor body
Connected to the rear cover that is vertically swingable from the rotary cover, the sensor body is configured to detect the operation of the rear cover that swings vertically with the change of the plowing depth via the sensing rod. The sensor body controls a hydraulic valve for raising and lowering the rotary device provided on the tractor to automatically adjust the working depth of the rotary device.

[0004]

However, even with such an automatic plowing depth control sensor, the sensing rod does not operate accurately, so that there is a problem that the plowing depth is not accurately controlled.

That is, in the rear cover connecting the tips of the sensing rods, the tip end originally slides on the cultivated surface,
In order to serve the function of leveling the cultivated surface, it is constructed with a thin plate to make it lightweight, and the rear cover itself swings up and down as needed even when the working depth changes to ensure the leveling of the cultivated surface. However, the rear cover is apt to be distorted due to the scattering of the tilling soil and the like, which causes the accuracy of the sensing rod to be deteriorated.

[0006]

In view of the above, in the present invention, a rear end of a rotary cover of a rotary device is pivotally supported on a rear end of the rear cover so that the base end of the rear cover can swing up and down. In a rotary device configured to have an automatic tilling depth control sensor interposed between it and a hydraulic valve for raising and lowering the device, and the sensor is capable of performing automatic tilling depth control, a pair of left and right reinforcing vertical ribs is provided on the upper surface of the rear cover. The reinforcing vertical ribs are extended in the front-rear longitudinal direction from the front end portion of the rear cover to the rear end position, and are protruded frontward and upward from the front end portion of each reinforcing vertical rib. A pair of left and right hanger rods are respectively provided between the connecting portions and the left and right shaft cases arranged at the front of the rotary device, and the connecting portions are formed by extending the connecting portions. On the side The bracket is arranged at a position located on the lateral outer side of either one of the connecting portions, and the bracket and the connecting portion are overlapped with each other in a side view, and the upper surface of the rotary cover located immediately in front of the bracket. so,
Moreover, the sensor body of the automatic tillage depth control sensor is placed near the pivotal part, the sensing body is extended from the sensor body toward the bracket side, and the sensing body is arranged substantially parallel to the vertical ribs for reinforcement. (EN) An automatic tilling depth control sensor arranging structure for a rotary device which is positioned and whose tip is connected to a bracket.

[0007]

In the present invention, when the tilling depth changes during the tilling work, the rear cover swings up and down in response to the change, and the sensor body detects the movement of the rear cover by the sensor body, and the rotary device of the tractor moves up and down. A constant working depth is automatically secured in order to activate and deactivate the rotary valve and vertically adjust the rotary device to a proper height.

At this time, a pair of left and right reinforcing vertical ribs are provided on the upper surface of the rear cover so as to be spaced apart in the left-right width direction, and each reinforcing vertical rib extends from the front end portion of the rear cover to the rear end position. It is formed by extending it vertically, and extending the connecting part from the front end part of each reinforcing vertical rib toward the front upper part, and between each connecting part and the left and right shaft cases arranged in the front part of the rotary device, respectively. Since a pair of left and right hanger rods are interposed, even when the rear cover itself is made thin and lightweight,
It is possible to prevent the rear cover from being distorted due to cultivated soil and the like, and also to prevent the rear cover from being twisted.

Moreover, at the front of the upper surface of the rear cover, and
A bracket is placed at a position located on the lateral outer side of either one of the left and right connecting parts, and the bracket and the connecting part are overlapped with each other in a side view, and the rotary is located immediately in front of the bracket. Place the sensor body of the automatic tillage depth control sensor on the top surface of the cover and near the pivot, and extend the sensing body from the sensor body toward the bracket side. Since the tip end is connected to the bracket by being positioned substantially parallel to the rib, the vertical movement of the rear cover can be reliably transmitted to the sensor body via the sensing body.

As described above, since the rear cover can be prevented from being distorted or twisted and the vertical movement of the rear cover can be surely transmitted to the sensor main body, the accuracy of the automatic plowing depth control can be secured sufficiently. be able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described in detail with reference to the drawings. A shown in FIGS. 1 and 2 is a rotary device, which is connected to the rear of a tractor so as to be vertically movable to perform plowing work.

Further, 1 is a hitch portion, 2 is a stay, 3 is a tillage electric case, 4 is a rotary shaft, 5 is a rotary pawl, and 6 is a rotary shaft.
Is a depth adjusting frame, 7 is a tilling depth adjusting device, 8 is a side cover, and 9 and 9'are left and right shaft cases.

Reference numeral 10 denotes a rotary cover which covers the rotary pawl 5, and a rear end of the cover 10 has a base end of a rear cover 11 which is pivotably supported up and down.

The rear cover 11 is formed in the shape of a horizontally long thin plate, and the tip 11a is bent downward so that the tip 11a slides on the cultivated surface so that the cultivated surface is leveled. It is configured to be done.

On the upper surface of the rear cover 11, a pair of left and right reinforcing vertical ribs 12 and 12 'are provided so as to project in the left-right width direction, and each of the reinforcing vertical ribs 12 and 12' is formed at the front end of the rear cover 12. Longitudinally elongated from the portion to the rear end position, and formed by extending the connecting portions 12a, 12'a from the front end portion of each reinforcing vertical rib 12, 12 'toward the front upper side, each connecting portion 12a, A pair of left and right hanger rods 13 and 13 'are provided between 12'a and the left and right shaft cases 9 and 9'arranged in the front part of the rotary device A, respectively, and the rear cover is provided by both hanger rods 13 and 13'. Regulates the decline of.

Moreover, the rotary apparatus A is constructed so that the automatic plowing depth control sensor 14 automatically and appropriately adjusts the plowing depth so that the plowing depth is always kept constant.

The automatic tilling depth control sensor 14 includes a sensor body 14a, a sensing body 14b projecting from the sensor body 14a and connecting the tip to the rear cover 11, a sensor body 14a and a rotary device provided on the tractor. It is composed of an automatic tilling depth control wire 14c which is interposed between the hydraulic valve and the hydraulic valve.

In such a structure, the gist of the present invention resides in the arrangement structure of the automatic tilling depth control sensor 14, and is as follows.

That is, the sensor main body 14a of the automatic tilling depth control sensor 14 is mounted on the upper surface of the rotary cover 10 located below and adjacent to the right hanger rod 13 ', and the right main hanger rod 13 is seen from the sensor main body 14a in plan view. Sensing body 14b is projected rearward in parallel with'and the right reinforcing vertical rib 12 ', and the tip 14b' of the sensing body 14b is connected to the rear cover 11 near the right reinforcing vertical rib 12 'via the bracket 15. Is what you are doing. Moreover, the bracket 15 is arranged on the front part of the upper surface of the rear cover 11 and at a position laterally outside the right connecting part 12'a, and the bracket 15 and the connecting part 12'a are viewed in a side view. They are polymerized and placed.

Further, a reinforcing rib 16 is provided on the back surface of the rotary cover 10 on which the sensor body 14a is mounted.

Therefore, the sensor main body 14a has a reinforcing rib 16
Is stably supported on the upper surface of the rotary cover 10 having
In addition, the sensing body 14b protruding from the sensor body 14a
Since the tip 14b 'of the sensor is also connected to the rear cover 11 via the bracket 15 in the vicinity of the right reinforcing vertical rib 12', the sensor body 14a may cause a sensing error due to distortion of the rear cover 11 or the like. There is no such thing, and it senses with high accuracy and fulfills an accurate automatic working depth control function.

[0022]

EFFECTS OF THE INVENTION According to the present invention, since the structure is simplified and accurate sensing can be performed, automatic plowing depth control is surely performed, and there is an effect that working performance of securing a constant plowing depth is significantly improved. .

[Brief description of drawings]

FIG. 1 is a side view of a rotary device having an automatic tilling depth control sensor arrangement structure according to the present invention.

FIG. 2 is a plan view of the rotary device.

[Explanation of symbols]

 A Rotary device 10 Rotary cover 11 Rear cover 14 Automatic tillage control sensor 14a Sensor body 14b Sensing body

Claims (1)

[Scope of utility model registration request] 1. A rotary cover (10) for a rotary device (A).
The rear end of the rear cover (11) is pivotally supported (11b) so that it can swing up and down, and the rear cover (11) automatically moves between the rear cover (11) and the hydraulic valve for raising and lowering the rotary device installed on the tractor. In a rotary device with a plowing depth control sensor (14) interposed so that automatic plowing control can be performed by the sensor (14), a pair of left and right reinforcing vertical ribs (12) are provided on the upper surface of the rear cover (11). ,
(12 ') are projected in the left-right width direction at intervals, and the reinforcing vertical ribs (12), (12') are extended longitudinally from the front end of the rear cover (12) to the rear end position. Let each vertical rib for reinforcement
From the front end of (12), (12 ') to the front upper part, connect part (12a), (1
2'a) is formed by extending it, and each connecting part (12a), (12'a) and the left and right shaft cases (9), (9 ') arranged at the front part of the rotary device (A).
Left and right pair of hanger rods (13), (13 ') between and
The front cover of the rear cover (11) and the left and right connecting parts (1
2a) and (12'a), the bracket (15) is arranged at a position located on the lateral outer side of either one, and the bracket (15) and the connecting portion (12'a) are overlapped in a side view. The rotary cover located immediately in front of the bracket (15).
Place the sensor body (14a) of the automatic tilling depth control sensor (14) on the upper surface of (10) and near the pivot (11b), and place the bracket (15) side of the sensor body (14a). Extend the sensing body (14b) toward, and position the sensing body (14b) substantially parallel to the reinforcing vertical ribs (12 '), and connect the tip (14b') to the bracket (15). Automatic rotary depth control sensor arrangement structure for the rotary device.