JPH0137985Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is mainly used for management work such as weeding during weeding while walking between furrows and intercultivation of soil using a tiller. More specifically, the present invention relates to a walking type mobile agricultural machine in which an engine is mounted on a frame fixedly extending forward from the upper part of an axle drive transmission case.

[Conventional technology]

A conventional walking type mobile agricultural machine has a cantilever support structure in which the entire load of the frame on which the engine is mounted is supported only at the upper part fixed to the transmission case.

[Problem that the invention aims to solve] Therefore, even if there is no problem with static loads in terms of frame support strength, dynamic loads such as movement of the center of gravity due to unexpected vibrations or tilting while the aircraft is moving However, there was a problem that the parts that were fixed to the transmission case were deformed and damaged.

Therefore, as shown in Figure 1 of Japanese Utility Model Application No. 49-31802, the support frame for mounting the engine is formed into a substantially triangular shape when viewed from the side, and its rear end is fixedly connected to the transmission case. Taking the configuration,
It is also possible to improve the frame support strength and adopt a structure that is resistant to dynamic loads, but in this case, since the support frame structure is a single plate formed into a triangular shape, The structure was large and the frame structure was not suitable for this type of walking device, which has strong demands for miniaturization.

In view of these circumstances, the present invention aims to improve frame support strength through simple structural improvements, while also
The purpose is to take advantage of the ease of handling by adopting rational members for this reinforcing frame structure, and to achieve the effect of protecting the engine by making effective use of the structure.

The characteristic configuration of the walking type mobile agricultural machine according to the present invention, which has been made to achieve the above object, is that a rod-shaped stay facing forward and backward is fixedly connected to a lower part of the transmission case than the frame fixing point and to the front end of the frame. In addition, the front end portion of the stay is integrally extended to the front portion of the frame, and the extended frame portion is configured to also serve as a protector.

The effects of the present invention having such a characteristic configuration are as follows.

[Function] By forming the stay with a rod-shaped member, it is possible to improve the strength of the engine-mounted frame while reducing the weight compared to the conventional triangular frame structure. Since the mounting frame is vertically spaced further toward the rear and the cross-section of the rod-shaped stay can be made relatively small, it is easy to hold the rod-shaped stay when lifting the mobile agricultural machine and changing direction.

Since the rod-shaped stay itself has a small cross-sectional area, such as a round bar or pipe, the rod-shaped stay can be fixed to the transmission case so that it fits within the width of the transmission case, which originally has a certain width. It is possible to suppress the rod-shaped stay from protruding into the installation space of the wheel pivotally supported by the transmission case, and it is possible to reduce restrictions on the installation of the wheel.

By integrally extending the front end portion of the stay to the front portion of the frame, the front end portion can also be used as a protector to prevent damage and deformation of equipment such as the engine due to contact with unexpected obstacles. can do.

[Effect of idea]

Therefore, with a simple modification of adding a stay, which is a rod-shaped member, it is possible to improve the strength of the frame and protect the engine and other equipment, and to achieve superior durability as a whole, which is advantageous in terms of manufacturing and cost. At the same time, we have been able to provide a device that has fewer restrictions on the arrangement of the transmission case and the wheels, and is also useful as a handle when lifting, and is excellent in terms of handling.

〔Example〕

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

As shown in the drawing, an engine E is mounted on a frame 2 fixedly extending forward from the upper part of an axle drive transmission case 1, and a drive wheel W is mounted on one side of the lower part of the transmission case 1, and A grounding tool 3 such as a tiller rotary is provided at the rear of the driving wheel W, and a base end of a steering handle H extending rearward and upward is fixed to the rear of the engine section E.

A round rod-shaped stay 4 is fixedly connected to a portion of the transmission case 1 below the point where the frame 2 is fixed and to the front end of the frame 2.
The front end portion 4a of the frame 2 is integrally extended in a bent state to the front portion of the frame 2 and to the side of the front portion opposite to the side where the transmission case 1 is present.
b is also used as a protector.

[Brief explanation of the drawing]

The drawing is a partially cutaway overall perspective view showing an embodiment of the walking-type mobile agricultural machine according to the present invention. E... Engine, 1... Axle drive transmission case, 2... Frame, 4... Rod-shaped stay, 4a...
...Front end portion, 4b...Extended frame portion.

Claims (1)

[Claims for Utility Model Registration] 1. In a walking type mobile agricultural machine in which an engine E is mounted on a frame 2 fixedly extending forward from the upper part of a transmission case 1 for driving an axle, the frame of the transmission case 1 A rod-shaped stay 4 facing forward and backward is fixedly connected to the lower part of the fixing point 2 and the front end of the frame 2, and the front end portion 4a of the stay 4 is integrally extended to the front end of the frame 2. A walking type mobile agricultural machine in which the extended frame portion 4b is also used as a protector. 2. The walking type mobile agricultural machine according to claim 1, wherein the transmission case 1 drives one wheel.