JPH1156007A - Connecting device for levee plastering machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject device without having adverse influence upon finishing of new levee by connecting a levee plastering machine to the rear end part and interposing an attaching angle-changing mechanism between them to make grounding posture of the levee plastering machine changeable. SOLUTION: In a connecting device A for connecting a levee plastering machines B at a pair of lateral attaching points so as to liftably connect the levee plastering machines behind track T for agriculture, the levee plastering machine B is connected through a rotatable shaft 24 extended in right and left directions so as to be vertically movable and an attaching angle changing mechanism for changing attaching angle of the levee-plastering machines B to the connecting device A is interposed between the connecting device A and the levee plastering machine B to make grounding posture of the levee plastering machine B changeable. The attaching angle-changing mechanism stands a lever 25 on the upper surface of the connecting device A and stands a lever 29 on the upper surface of the levee plastering machine B and an expansion and contraction mechanism E comprising a spiral lever 28 driven by an electric motor 26 and a nut 30 are interposed between levers 25 and 29 and grounding posture of the levee plastering machine B can be changed by an expansion and contraction operation of the expansion and contraction mechanism E.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for a row coater.

[0002]

2. Description of the Related Art Conventionally, a rear side of an agricultural tractor is connected via a connecting device having a pair of right and left attachment points, and while traveling close to a ridge of a field, the inner side surface of the ridge and a field scene at the ridge are compared. There is a ridge coater which cuts a ridge and crushes it above an original ridge, and tamps it with a ridge forming plate vibrating in a vertical direction to form a new ridge.

[0003]

However, in the above-mentioned ridge coater, since the connecting device is integrally fixed to the ridge coater, the ridge coater is used to adjust the cutting depth in the ridge field scene. When the machine is raised and lowered, the ridge coater rotates up and down around the mounting point, and the attitude of the ridge coater to the ground, in particular, the angle of attack of the ridge forming plate with respect to the ground changes, resulting in a new ridge finish. May have adverse effects.

[0004]

Therefore, according to the present invention, there is provided a connecting device which is connected to a pair of right and left mounting points in order to connect a ridge coating machine vertically to the rear of an agricultural tractor.
A ridge coater is connected to the rear end of the connection device via a pivot extending in the left-right direction so as to be tiltable up and down, and between the connection device and the ridge coater, the ridge coater is attached to the connection device. It is an object of the present invention to provide a connection device for a ridge coating machine, wherein a mounting posture changing mechanism for changing an angle is interposed to change a ground posture of the ridge coating machine.

[0005] The present invention also has the following features.

The mounting angle changing mechanism is characterized in that a connecting device side lever is erected on the upper surface of the connecting device, and a ridge coating machine side lever is erected on the upper surface of the ridge coating machine. Between the lever and the lever, a telescopic mechanism consisting of a screw driven by an electric motor and a nut screwed to the screw is interposed, and the expansion and contraction operation of the telescopic mechanism makes it possible to change the ground posture of the ridge coating machine. thing.

The extension mechanism comprises a screw rod having a manual handle connected to one end thereof, and a nut screwed to the screw rod.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In this embodiment, a front end of a ridge coating machine is pivotally movable up and down at the rear end of a connecting device for connecting an agricultural tractor and a ridge coating machine via a pair of right and left mounting points. At the same time, the connecting device side lever is set up on the upper surface of the connecting device, the electric motor is mounted on the upper end of the connecting device side lever, and the ridge coater side lever is set up on the front upper surface of the ridge coater. Attach a nut to the upper end of the ridge coating machine side lever, screw the middle part of the screw rod extending from the output shaft of the electric motor to the nut, and turn the screw rod by operating the electric motor. By moving it, the attitude of the ridge forming part to the ground can be changed.

In addition, a manual handle is attached to the front end of the screw rod in place of the electric motor, so that the ground position of the ridge forming portion can be changed manually.

[0010]

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

FIGS. 1 and 2 show a connecting device A according to the present invention.
The ridge coater B is provided with a ridge coater B. The ridge coater B is connected to the rear side of the agricultural tractor T via a connecting device A, and is connected to the rear right side of the agricultural tractor T in an overhanging manner. While traveling on the ridge, the rotary 3 of the tilling part 2 is driven by the power supplied from the PTO shaft 1 of the agricultural tractor T, and the inner surface of the ridge and the ground at the ridge are cut. The ridge forming plate 6 operatively connected to a hydraulically driven vibrator 5 arranged in the ridge forming section 4
To form a new ridge.

The ridge forming plate 6 is formed by cutting the cutting soil in front of the ridge forming plate 6.
In order to guide to the lower surface, the angle of attack is set by inclining the entire body from front to back and then to low, and is bent in a substantially inverted shape in side view. In the figure, 7 is a ridge coating machine frame incorporating a hydraulic pump, 8 is a rotary shaft, 9 is a rotary cover, 10 is a hydraulic oil tank, 11 is a guide wheel, and 12 is a ridge forming part 4 parallel to the inner surface of the new ridge. Ridge-forming mechanism for raising and lowering the ridge-forming unit, 13 is an electric cylinder for raising and lowering the ridge-forming unit, 14 is a vibrator support, 15 is a vibrator support spring, 16 is a ridge-formed plate support, and 17 is after an agricultural tractor T. Wheels.

The linking device A has a link mounting portion 18 protruding rearward from the rear of the agricultural tractor T, and a link extending in the front-rear direction via a mounting shaft 19 extending in the left-right direction. The front end of the rod 20 is pivotably attached to the front end.

An elevating mechanism 21 is provided.
Of the lift arm 22 is linked to the middle of the link rod 20 via a lifting rod 23, and the rear end of the link rod 20 is raised and lowered about the mounting shaft 19 by the operation of the lifting mechanism 21. I try to make it.

In particular, in this embodiment, a mounting angle changing mechanism D is provided between the connecting device A and the ridge coater B so that the attitude of the ridge coater B with respect to the ground (angle of attack) can be appropriately adjusted. I have.

The mounting angle changing mechanism D pivotally connects the front end of the ridge coater A to the rear end of the link rod 20 via a pivot 24 extending in the left-right direction so as to be tiltable. On the upper surface, a connecting device side lever 25 which is slightly inclined backward is erected, while a ridge coating machine side lever 29 is erected on the front end upper surface of the ridge coating machine B. An extension mechanism E is interposed between the side lever 29 and the side lever 29.

The extension mechanism E has an electric motor 26 mounted on the upper end of the connecting device side lever 25 via an ear shaft 27 extending in the left-right direction so as to be tiltable up and down, and a screw 28 connected to an output shaft of the electric motor 26. Of the ridge coater side while the front end of the
A nut 30 is tiltably attached to the upper end of the nut 30 via an ear shaft 27 extending in the left-right direction, and an intermediate portion of the screw rod 28 is screwed to the nut 30 so as to be screwable. The angle of attachment of the ridge coater B to the link rod 20 can be changed.

Thus, the ridge coater B for the connecting device A
Since the mounting angle of the ridge coater B can be changed, the raising / lowering mechanism 21 is operated to change the cultivation depth at the ridge.
When the vehicle is raised and lowered, even if the inclination angle of the link rod 20 with respect to the ground changes, the electric motor 26 can be operated to appropriately adjust the posture (angle of attack) of the ridge coating machine B with respect to the ground. Further, the operation of the elevating mechanism 21 and the operation of the electric motor 26 are linked with each other, or an inclination sensor is provided in the ridge coating machine B, and the operation of the electric motor 26 is controlled by the output of the sensor. It is also possible to appropriately maintain the ground posture of the ridge coating machine B appropriately.

FIG. 3 shows a telescopic mechanism E of another embodiment, in which a bearing 40 is mounted on an upper end of the connecting device side lever 25 via an ear shaft 27, and the bearing 40 and the ridge coating machine side lever 29 are mounted. A screw handle with a manual handle 41 connected to the tip between the nut 30
28, the only difference is that the ground posture of the ridge coating machine B can be changed by manual operation, and the other parts have substantially the same configuration. Since the electric motor 26 is not required, the structure is simplified. The posture control of the ridge coater B can be performed at low cost.

In addition, in addition to the above, a telescopic operating member such as a hydraulic cylinder can be used for the telescopic mechanism E.

[0021]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, there is provided a connecting device connected at a pair of right and left mounting points for connecting the ridge coater vertically to the rear of the agricultural tractor. A mounting angle changing mechanism for connecting the ridge coater vertically tiltably via a pivot extending in the left-right direction and for changing a mounting angle of the ridge coater with respect to the connecting device between the connecting device and the ridge coater. Intermediate, the ground posture of the ridge coating machine can be changed, so that when the tractor lifting device of the agricultural tractor is operated to raise and lower the ridge coating machine, the ground inclination angle of the link rod changes. Also, the attitude of the ridge coater to the ground (angle of attack) can be appropriately maintained.

According to the second aspect of the present invention, the mounting angle changing mechanism includes a connecting device side lever erected on the upper surface of the connecting device.
A ridge coating machine side lever is erected on the upper surface of the ridge coating machine, and a screw rod driven by an electric motor and a nut screwed to the screw rod are provided between the coupling device side lever and the ridge coating machine side lever. An expansion mechanism is interposed, and the expansion / contraction operation of the expansion / contraction mechanism makes it possible to change the ground position of the ridge coating machine, so that the ground position of the ridge coating machine can be properly adjusted only by operating a switch at hand. It is also possible to link the operation of the elevating device with the operation of the electric motor, or to install an inclination sensor in the ridge coater and control the operation of the electric motor by the output of the sensor, automatically. It is also possible to appropriately maintain the attitude of the ridge coater to the ground.

According to the third aspect of the present invention, the expansion and contraction mechanism is composed of a screw rod having a manual handle connected to one end thereof and a nut screwed to the screw rod, thereby simplifying the structure and reducing the cost. The attitude control of the ridge coater can be performed.

[Brief description of the drawings]

FIG. 1 is a side view of a ridge coater provided with a connecting device according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a ridge coater provided with a connecting device according to another embodiment.

[Explanation of symbols]

 A Connecting device B Row coating machine D Mounting angle changing mechanism E Telescopic mechanism T Agricultural tractor 20 Link rod 24 Axis 25 Connecting device side lever 26 Electric motor 28 Screw rod 29 Row coating machine side lever 30 Nut 41 Manual handle

Claims (3)

[Claims] 1. A ridge coater behind an agricultural tractor (T).
(B) is connected at a pair of left and right mounting points to connect the (B) vertically and freely, and a pivot extending in the left-right direction is provided at the rear end of the connecting device (A).
(24), the ridge coater (B) is connected so as to be vertically tiltable, and a connecting device is provided between the connection device (A) and the ridge coater (B).
(A) a ridge-coating machine (B) with a mounting angle changing mechanism (D) for changing the mounting angle of the ridge-coating machine (B). Machine coupling device. 2. The connecting device according to claim 1, wherein the mounting angle changing mechanism is a connecting device.
Set the connecting device side lever (25) on the upper surface of (A), and
A ridge coating machine side lever (29) is erected on the upper surface of (B), and is driven by an electric motor (26) between the coupling device side lever (25) and the ridge coating machine side lever (29). An expansion mechanism (E) consisting of a screw (28) and a nut (30) screwed to the screw (28) is interposed, and the expansion and contraction operation of the expansion and contraction mechanism (E) causes the ridge coating machine (B) to reach the ground. The connecting device for a ridge coater according to claim 1, wherein the posture can be changed. 3. The telescopic mechanism (E) includes a screw rod (28) having a manual handle (41) connected to one end thereof, and a nut (30) screwed to the screw rod (28). 3. The method according to claim 2, wherein
A connecting device for the ridge coater according to the above.