JPH08809Y2 - Cultivator rocking device of the tiller - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a tilling rocking device of a tiller.

(B) Conventional technology Conventionally, tillers have been used as shown in Japanese Utility Model No. 63-10809.
Connect the cultivator to the traveling machine through the rotary connection,
The tiller is constructed so that it can swing around the longitudinal axis of the machine.

Further, a swing cylinder is provided on the traveling machine body and the rotation connecting portion, and the cylinder is used to operate the tilling implement in a direction opposite to the inclination direction of the traveling machine body so that the tilling implement is in a horizontal state. It is configured to hold.

Further, a control box for controlling the rocking cylinder is attached to the handle base of the traveling machine body, and the rocking range of the tilling implement is changed or the rocking operation is switched by operating the box. I am trying.

(C) Problems to be solved by the invention However, the above-mentioned cultivator has the following drawbacks.

That is, when the handle extended from the handle base is gripped to operate the tiller, and when the tiller is rocked, the control box is operated to rock the rocking cylinder. The operator cannot easily perform the operation because the operation part of the handle and the control box are separated from each other.

(D) Means for Solving the Problems In the present invention, a cultivating implement is connected to a traveling machine body through a pivotal connecting portion, and a rocking cylinder is provided at the connecting portion, so that the traveling machine body is cultivated. In a cultivator configured to swing the machine around an axial center in the front-rear direction to hold the working machine in a horizontal state, a oscillating cylinder to one side with respect to the axis of the rotary connecting portion. While detachably provided, the other side is provided with a transmission case for transmitting power to the tiller, and
The present invention relates to a tilling rocking device of a tiller, wherein a control box for operating the rocking cylinder is detachably attached to an operating portion of a handle provided on a traveling machine body.

(E) Action and effect In the present invention, when the cultivator travels in an inclined field,
The pivoting coupling is pivoted by the rocking cylinder to pivot the tiller to the left and right with respect to the traveling body.
The work machine can be held in a horizontal state and cultivated in a horizontal state even in an inclined field.

Furthermore, when the operator grips the handle of the traveling machine body, the operator can easily swing the cultivator when operating the cultivator because the control box is provided in the operating section of the handle. The cylinder can be operated smoothly. In particular, when turning, the safety such that operations such as controlling the rocking cylinder to a non-rocking state can be performed smoothly is enhanced.

Moreover, the control box is removably attached to the operating part of the handle, and the rocking cylinder for rocking the tiller is also provided so that it can be used as a rocking type or a fixed type. Each can be easily replaced.

Also, since the rocking cylinder and the transmission case are arranged in a state of being distributed to the left and right sides with respect to the axis of the rotation coupling part, the reaction force due to the unevenness of the tilling surface can be distributed to the left and right. The support of the work machine is ensured.

(F) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. In the overall side view of FIG. 1, A is a cultivator according to the present invention, and a rear part of a traveling body 1 capable of self-propelling, The tillage implement 2 is connected to be swingable around the longitudinal axis.

The traveling machine body 1 has left and right wheels 4, 4 attached to the lower left and right sides of the mission case 3, and a rear end of a machine body frame 5 extending forwardly attached to a lower front wall of the mission case 3, and the machine body frame 5 The prime mover section 6 is mounted on the top.

Further, a front end of a handle support base 7 extending in a bifurcated right and left direction upward and rearward is attached to an upper part of the mission case 3, and left and right handles 8, 8 are provided at left and right rear ends of the handle support base 7.
Of the mission case 3 to each handle 8,8
Left and right side clutch levers 9, 9 for intermittently operating left and right side clutches (not shown) connected to the axles 4a, 4a of the left and right wheels 4, 4 are mounted therein.

Further, a traveling body side hitch 10 is provided on the rear wall of the mission case 3, and the traveling body side hitch 10 is attached to the tilling implement 2
The hitch 11 on the side of the tilling implement provided in the is detachably connected.

The tiller 11 on the side of the tiller is attached to the upper front wall of the tiller case 12 of the tiller 2, and
The reference numeral 12 extends downward, and a cultivating shaft 13 is laterally laterally mounted on its lower end, and a large number of cultivating claws 14 are attached to the outer peripheral surface of the cultivating shaft 13.

Furthermore, the upper part of the mission case 3 and the tiller 2
The upper part of the cultivating case 12 is linked to the upper part of the cultivating case 12 through a transmission case 15 to transmit power to the cultivating implement 2.

A front end of a rotary frame 16 extending rearward is attached to an upper rear wall of the tilling case 12, and a tail wheel 17 is attached to a rear end of the rotary frame 16 via a tail wheel support rod 18.

 In addition, 19 is a rotary cover.

In this embodiment, as shown in FIGS. 2 and 3, the transmission case 15 is casing by a case 15b in which the transmission shaft 15a is extendable, and the transmission shaft 15a is spline-fitted. The transmission shaft 15a is configured to be extendable and contractible, and the universal joints 15c are provided at both ends of the transmission shaft 15a so as to be bendable.

Then, even if the tilling implement 2 swings, the transmission case 15 expands and contracts and bends, so that the power from the traveling machine body 1 can be smoothly transmitted.

Reference numeral 15d represents a flexible rubber cover that covers the transmission case 15.

In this embodiment, a tilling rocking device that allows the tilling implement 2 to swing with respect to the traveling machine body 1 is attached to the tiller A,
Hereinafter, the structure of the rocking device will be described in detail.

That is, in this embodiment, the tiller 11 on the tiller implement side,
As shown in FIG. 3, the cultivating implement 2 is connected via a pivotal connecting portion 20, and the connecting portion 20 has a rear side portion of the hitch 11 in which a shaft center thereof is oriented in a front-back direction. While the moving ring 21 is projectingly provided, a swinging support shaft 22 whose axial center is oriented in the front-rear direction is provided projectingly on the rear wall of the transmission case 15, and the swinging ring 21 is rotated on the swinging support shaft 22. It fits freely.

Further, a rocking cylinder 24 is attached to the handle support base 7 of the traveling machine body 1 and the rocking ring 21 of the rotary coupling portion 20, and the rocking work machine 2 is rocked in the left-right direction by the rocking cylinder 24. There is.

Further, in the present embodiment, as shown in FIG. 3, the swing cylinder 24 has a tilt sensor 23 for detecting a left and right tilt angle around the longitudinal axis of the traveling machine body 1, and a detection result of the tilt sensor 23. A control box 25 for expanding and contracting a rocking cylinder 24, which will be described later, is connected thereto, and is configured to hold the tiller 2 in a horizontal state.

As shown in FIGS. 1 to 3, the swing cylinder 24 is attached via a cylinder stay 26 protruding laterally leftward from the front left side wall 7a of the handle support base 7.

Further, the tip of the rocking cylinder 24 is connected to the tip of a rocking arm 27 which projects laterally leftward from the left side of the outer peripheral surface of the rocking cylinder 21.

With this structure, in the cultivator A, when the traveling machine body 1 tilts to the left and right, the tilt sensor 23 detects the tilt around the longitudinal axis of the traveling machine body 1 and operates the swing cylinder 24 by the control box 25. By rotating the swing support shaft 22 as a center, the tilling implement 2 is held in a horizontal state.
Further, the rocking cylinder 24 and the transmission case 15 are connected to each other by the rotation connecting portion 20.
Since it is arranged in the state of being distributed to the left and right sides with respect to the axis of the, the reaction force due to the unevenness of the tilling surface can be distributed to the left and right, and the support of the tiller 2 is ensured.

The present invention has the characteristic of the control box 25 in the swing structure of the tiller 2 as described above, and the structure will be described in detail below.

In this embodiment, the control box 25 is attached to the operating portion 8a of the handle 8 of the traveling machine body 1 as shown in FIGS. 1 and 2, so that the operator holding the handle 8 can operate the box.
It is configured to perform 25 operations.

The control box 25 is provided with a knob 25a. The knob 25a adjusts the expansion / contraction range of the rocking cylinder 24 to set the rocking range of the tiller 2 and
It is possible to switch between the swing type and the fixed type of the tilling implement 2.

With such a structure, an operator who holds the handle 8 of the traveling machine body 1 and operates the cultivator A operates the operation unit of the handle 8.
You can easily operate the control box 25 provided on the 8a
By operating 25, the rocking cylinder 24 can be operated smoothly.

In addition, in the present embodiment, the control box 25 is installed in the traveling machine body 1.
Removably attached to the handle 8 of the
20 and a rocking rocking device consisting of a rocking cylinder 24 etc.
It is detachably attached to the cultivator A.

With such a structure, the cultivating implement 2 of the cultivator A can be easily replaced with the swing type and the normal fixed type.

Reference numeral 28 denotes a mounting member for mounting the rotary connecting portion 20 to the tillage case 12.

[Brief description of drawings]

FIG. 1 is a side view of a tiller according to the present invention, FIG. 2 is an enlarged view of a connecting portion of the tiller, and FIG. 3 is an explanatory view of a tiller rocking device of the tiller. In the figure, A: Tiller 1: Traveling vehicle 2: Tillage implement 15: Transmission case 24: Swing cylinder 25: Control box

Claims (1)

[Scope of utility model registration request] 1. A traveling machine body, wherein a cultivating implement (2) is connected to a traveling machine body (1) through a pivotal connecting part (20), and a rocking cylinder (24) is provided in the connecting part (20). With respect to (1), in the cultivator configured to swing the cultivator working machine (2) around a longitudinal axis of the cultivating machine (2) and hold the same working machine (2) in a horizontal state, The rocking cylinder (24) is detachably provided on one side of the shaft center of the dynamic coupling portion (20), while the transmission case (15) for transmitting power to the tiller (2) is provided on the other side. In addition, a control box (25) for activating the swing cylinder (24) is detachably attached to an operating portion of a handle (8) provided on the traveling machine body (1). Tillage rocking device.