JPS6344312Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention provides
This invention relates to a walking type mobile agricultural machine equipped with a handle mounting base rotatably around a vertical axis and a handle attached to the handle mounting base.

[Prior Art] As a handle mounting structure for this type of walking type mobile agricultural machine, for example, a structure shown in Japanese Utility Model Publication No. 10250/1983 is known. This conventional structure will be explained with reference to FIG. was rotatably fitted onto the outside, and a retaining plate 020 was fixed to the pivot shaft 11 with bolts 021 to prevent the mounting base 8 from being pulled out.

[Problem that the invention attempts to solve]

In this way, in a structure that uses a cylindrical handle mount 8 that fits around the pivot shaft 11 on the mounting table 6, the plowing depth can be determined by rocking the machine back and forth around the grounding point of the wheels. In order to easily transmit the operating force such as pushing down or pulling up the handle during work such as changing the handle, the length of the engagement between the pivot shaft 11 and the handle mounting base 8 is increased to some extent to increase the contact area. However, if the mating length is increased in this way, the height of the upper part of the aircraft above the ground becomes high, which has the disadvantage that it is difficult to use when working by passing through low fruit trees. .

This invention, by devising the handle mounting structure,
The purpose is to keep the height of the handle mounting portion from the ground as low as possible while ensuring a sufficiently large contact area of the handle mounting base with respect to the mounting base including the pivot shaft.

[Means for solving problems]

The characteristic configuration of the present invention to achieve the above object is that a handle mounting base is attached to a mounting base fixed to the traveling machine body so as to be rotatable around the vertical axis.
In this walk-behind mobile agricultural machine in which the handle is attached to the handle mounting base, the facing surfaces of the mounting base and the handle mounting base are each formed into wide flat surfaces, and the central part of the facing surfaces of the two bases is A large-diameter pivot shaft having the above-mentioned vertical axis is protruded from either the mounting base or the handle mounting base, and a circular hole into which the pivot shaft is inserted is formed in the other, and from this circular hole. A stopper for restricting the pivot shaft from coming out of the circular hole is attached to the protruding free end of the pivot shaft, and further, the handle is separated radially outward from the pivot shaft. One end side is pivotally connected to the handle mounting base at the position, and at a position opposite to the position where the handle is pivotally connected to the handle mounting base across the pivot shaft, the above-mentioned A locking mechanism is provided for fixing the handle mounting base to the mounting base in a non-rotating state, and this configuration provides the following functions and effects.

[Effect]

The mounting structure of the handle, which is rotatable around the vertical axis, is not composed of an axially long pivot shaft and a long cylindrical body that fits onto the shaft, but is mounted on the top surface of a flat and wide mounting table. Similarly, flat and wide handle mounting bases are provided facing each other, and the wide flat surfaces are in contact with each other so that operating force such as pushing down or pulling up the handle can be transmitted to the traveling aircraft side.

Therefore, the pivot shaft only needs to have the role of regulating horizontal positional deviation between flat surfaces, and there is no need for receiving the operating force or for mounting for connecting the handle. There is no need to erect a long pivot shaft or a long cylindrical body for connecting the handle on the handle mounting base.

[Effect of idea]

Because of the above effects, there is no large protrusion such as a long pivot on the handle mounting base, which makes it easy to install the handle as low as possible, making it bulky from the ground, suitable for work between low fruit trees, etc. There is an advantage that it is easy to obtain a low walking type mobile agricultural machine.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a side view of the entire walk-behind mobile agricultural machine to which an embodiment of the present invention is applied, in which a tilling rotary 2 is attached to the front of the traveling machine body 1, and a steering handle 3 is attached to the handle mounting portion 4. It is attached via. The handle attachment portion 4 is configured to attach the handle 3 to the traveling vehicle body 1 so as to be rotatable in the vertical and horizontal directions.

This handle attachment part 4 is attached to the mission case 5.
A mounting table 6 fixed to the upper part of the mounting table 6 and having a substantially U-shaped side when viewed from the front, and an inverted U-shaped mounting table 6 having ribs 7, 7 erected on both sides facing the upper surface of the mounting table 6. The handle mounting base 8 is installed to be rotatable left and right with respect to the mounting base 6. That is, as shown in the vertical cross-sectional view of the main part in FIG. Rib 1 on both sides of
0 and 10 are bolted to this boss member.

The upper surface of this mounting table 6 is a flat surface, and a cylindrical pivot shaft 11 having a short axial length is fixed near the center of this flat surface, while the lower surface of the handle mount 8 is flat. The pivot shaft 1 is inserted into a circular hole 12 provided in the center of the flat surface.
1 has been penetrated internally.

A male thread 13 is cut in the upper part of this pivot shaft 11, and a nut 14 as a stopper is screwed into this male thread 13, and the handle mount 8 is fixed to the pivot shaft by this nut 14. It is locked to the mounting table 6 in a state where slipping out from the mounting table 11 is restricted.

The free end 17 of the handle frame 16 is made of a pipe formed into a substantially U-shape when viewed from above;
A bearing boss member 18 is fixed to the free end portions 17, 17, and this boss member 18 is attached to the ribs 7 on both sides at the front of the handle mounting base 8.
The handle 3 made up of the handle frame 16 and the boss member 18 is connected and fixed to the handle mount 8 by being rotatably externally supported on a shaft 19 provided over the handle 7 .

At a position on the opposite side of the pivot shaft 11 from the position where the handle 3 is connected and fixed to the handle mount 8, the handle mount 8 is fixed to the mounting base 6 in a non-rotating state. A locking mechanism 23 is provided which includes a locking pin 20 and pin holes 21 and 22 that fit into the locking pin 20.

FIG. 3 shows a nut 14 which serves as a retainer and is configured in the shape of a cap nut.

Incidentally, although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with Fig. 1 being a side view showing the entire tiller, Fig. 2 being a longitudinal sectional side view of the main part,
FIG. 3 is a longitudinal sectional side view of a main part of another embodiment. Fourth
The figure is a longitudinal sectional side view showing a conventional example. 1... Traveling body, 6... Mounting stand, 8... Handle mounting base, 11... Pivoting shaft, 12... Circular hole, 14
...Removal stopper, 23...Lock mechanism.

Claims (1)

[Scope of utility model registration request] A handle mounting base 8 is attached to a mounting base 6 fixed to the traveling body 1 so as to be rotatable around the vertical axis.
In this walking type mobile agricultural machine in which the handle 3 is attached to the handle mounting base 8, the facing surfaces of the mounting base 6 and the handle mounting base 8 are respectively formed into wide flat surfaces, and the opposing faces of the two bases 6 and 8 are A large-diameter pivot shaft 11 having the above-mentioned vertical axis is provided protrudingly in the center of the surface and on either the mounting base 6 or the handle mounting base 8, and this pivot shaft 11 is inserted into the other. A circular hole 12 is formed, and this circular hole 1
A retainer 14 is attached to the free end of the pivot shaft 11 protruding from the handle 3 to prevent the pivot shaft 11 from coming out of the circular hole 12.
is pivotally connected at one end to a handle mount 8 at a position away from the pivot shaft 11 in the radial direction, and is connected to the handle 3 pivotably to the handle mount 8. The pivot shaft 11
The walking type mobile agricultural machine is provided with a locking mechanism 23 for fixing the handle mounting base 8 to the mounting base 6 in a non-rotating state at positions opposite to each other with the handle mount 8 interposed therebetween.