JPH052006Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a structure for adjusting the opening degree of a rotary cover in a rotary tilling device of a management machine with a single lever.

(b) Prior Art Conventionally, the technology of vertically rotating the left and right rotary covers of the management machine in order to perform work such as ridge filling, ridge raising, and soil lifting has been publicly known. For example, the left and right rotary covers and a support plate set up in the center of the rotary are connected in a triangular shape by left and right links with long holes, and the opening degree can be adjusted by changing the length of the long holes of the links. He was doing so.

For example, there is a technique described in Japanese Utility Model Application Publication No. 55-3690.

Furthermore, a technique is known in which the front end portion of the tilling cover of a rotary tilling device is opened up and down using a lever. For example, there is a technique described in Japanese Utility Model Publication No. 54-15216.

(c) Problems that the invention aims to solve With the above configuration, the opening degree is adjusted by tightening adjustment screws in the long holes of the left and right links, so in order to make the adjustment, a management machine is required. Adjustments could only be made when the engine was stopped.
Therefore, when the unevenness or depth of the cultivated soil changes during work, or when it is desired to change the scattering distance, the opening degree cannot be adjusted unless the control machine is stopped once. Moreover, it is difficult to adjust the opening to the appropriate opening degree in one go, so the opening may have to be stopped many times. As a result, the finish was uneven in areas where the opening was adjusted.

(d) Means for solving the problems In order to solve the above-mentioned problems, the present invention is constructed as follows.

In a configuration in which the left and right rotary covers 17L, 17R can be vertically rotated around pivot parts provided on the left and right sides of the beam 11, links 19, 19 are pivotally connected to the upper surfaces of the rotary covers 17L, 17R, and The upper ends of the links 19, 19 are overlapped and engaged and inserted into the middle part of the adjustment lever 18, and the adjustment lever 18 has a front end pivoted to the upper part of the beam 11, and a rear part of the adjustment lever protruding from the upper part of the beam 11. It is inserted into the plate 20.

(E) Embodiment The purpose of the present invention is as described above, and the structure and operation of the embodiment shown in the attached drawings will be explained below.

Fig. 1 is an overall side view of a cultivator equipped with a rotary cover of the present invention. Fig. 2 is a rear view of the same. Fig. 3 is a rear view of the same with the rotary cover open. Fig. 4 is an enlarged side view of a rotary tilling device. Fig. 5 is a perspective view of the same.

A handle 3 which can be changed and rotated back and forth is provided projecting from above a transmission case 5, and an engine bracket 2 is provided projecting forward of the transmission case 5, on which an engine 1 is placed.

Power from the engine 1 is transmitted to the wheels 6 and a PTO shaft provided on the opposite side of the belt case 4 after shifting in the transmission case 5 via a pulley and a belt in the belt case 4.

The power from the PTO shaft is transmitted to a rotary drive case 8 via a power take-off case 7 to drive the tiller tines 9.

Rotary tillage device R is transmission case 5.
They are connected by a hitch 10 fixed to the rear of the rotary tiller R and a hitch 12 fixed to the tip of the beam 11 of the rotary tiller R.

To explain the configuration of the rotary tilling device R from FIG. 2, FIG. 3, FIG. 4, and FIG. A clutch lever 21 for connecting and disconnecting the rotation of 9 is attached.

A pipe 14 for mounting the tail wheel 13 is fixedly installed at the rear of the beam 11, and the tail wheel 1 is attached to the pipe 14.
3 is fixed to the lower end of the shaft 15.

The height of the tail wheel 13 is adjusted using a handle 16, and a rotary cover 17 is provided on the lower surface of the beam 11.
L and 17R are pivotally connected, and the opening degree is determined by the adjustment lever 18, which is the essential part of the present invention.

That is, the rotary covers 17L, 17R rotate around pivot parts provided at the left and right lower portions of the beam 11, and links 19L, 19R for lifting the rotary covers 17L, 17R are pivotally connected to the upper surface of the rotary covers.

The other ends of the links 19L and 19R overlap at one location on the beam 11, and are fitted into and pivotally supported by the adjustment lever 18.

The base end of the adjustment lever 18 is pivotally supported at the rear of the rotary drive case 8, and is rotatable up and down.

In addition, a height adjustment plate 20 is installed on the rear side of the beam 11.
The height adjustment plate 20 is provided with an elongated hole, and one side of the elongated hole is wave-shaped so that the adjustment lever 18 can be locked therein.

(f) Effect By configuring as described above, the adjustment lever 1
8 moves up and down within the wavy elongated hole of the height adjustment plate 20, allowing the height to be determined step by step. A rotary cover 17L, which is connected to the adjustment lever 18 via links 19L and 19R,
17R will open in stages.

(G) Effects of the invention Due to the above-described structure and operation, the invention achieves the following effects.

First, the degree of opening of the rotary cover can now be adjusted by simply moving one adjustment lever 18 up and down, eliminating the need for operations such as tightening adjustment screws, making adjustment easier.

Second, even during work such as ridge building, trench digging, soil lifting, etc., you can use a single adjustment lever to determine the opening degree of the rotary cover that is suitable for the work situation, such as the soil and unevenness, without stopping the work. It became possible to do so.

[Brief explanation of the drawing]

Figure 1 is an overall side view of a management machine equipped with the rotary cover of the present invention. Figure 2 is also a rear view. Figure 3 is a rear view with the rotary cover open. Figure 4 is an enlarged side view of the rotary tiller. FIG. 5 is also a perspective view. 11...Beam, 17L, 17R...Rotary cover, 18...Adjustment lever, 19...Link.

Claims (1)

[Scope of utility model registration request] In a configuration in which the left and right rotary covers 17L, 17R can be vertically rotated around pivot parts provided on the left and right sides of the beam 11, links 19, 19 are pivotally connected to the upper surfaces of the rotary covers 17L, 17R, and The upper ends of the links 19, 19 are overlapped and engaged and inserted into the middle part of the adjustment lever 18, and the adjustment lever 18 has a front end pivoted to the upper part of the beam 11, and a rear part of the adjustment lever protruding from the upper part of the beam 11. A rotary cover for a management machine characterized by being fitted into a plate 20.