JPH0739731Y2 - Bonnet structure of walking type agricultural work machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bonnet structure of a walking type mobile agricultural machine such as a walking type cultivator or a walking type management machine.

[Conventional technology]

In a cultivator that is an example of a walk-behind mobile agricultural machine, as shown in, for example, Japanese Utility Model Laid-Open No. 61-131350, above the engine mounted on the front of the machine, it swings up and down around a front fulcrum. There is one with a bonnet arranged freely.

[Problems to be solved by the device]

Conventional bonnets generally have a structure in which a front grill is integrally formed on the front end of a bonnet body that is pressed by sheet metal, and a headlight device is attached to the opening formed in the front grill. Since it is a thin sheet metal material, it is weak in strength, and if another object comes into contact with the front of the bonnet, it will deform to the mounting part of the headlight device and the lamp of the headlight device will crack. There was also.
Of course, a reinforcement stay or the like may be attached to the inner surface of the front part of the bonnet to increase the strength, but attaching a separate part to the pressed product tends to increase the processing and assembly costs, leaving room for improvement. There is.

The present invention is intended to solve the above-mentioned problems of the conventional structure by improving the structure of the front part of the bonnet.

[Means for Solving the Problems]

The characteristic structure of the present invention for achieving the above-mentioned object is to provide a protector member (11) having an arch-shaped plan view in which the bonnet (10) is convexly curved forward, and left and right rear end portions of the protector member (11). The protector member is composed of a vertical frame member (12) having an arch shape in a front view, which connects the two members to each other, and a bonnet body (13) which is connected to the upper part of the vertical frame member (12) so as to surround and extend rearward. The headlight device (17) is fixedly arranged in a space (A) formed between the front part of the vertical frame member (12) and the front part of the bonnet body (13), and the protector member ( 11) is pivotally connected to a stay (15) provided in the front part of the engine (4), and its action and effect are as follows.

[Action]

According to the above characteristic configuration, the headlight device is installed in a space surrounded by the protector member, the vertical frame, and the front end of the bonnet body, and the headlight device is directly attached to another object. As long as they do not come into contact with each other, it is less likely that the headlight device will be damaged by the contact between these surrounding members and other objects.

[Effect of device]

Therefore, according to the present invention, the protector member and the vertical frame member having high strength are formed as a part of the front part of the bonnet, so that the front part of the bonnet can be installed without using a separately provided reinforcing stay. With high strength, the headlight device can be safely mounted without increasing the cost.

〔Example〕

FIG. 4 shows a walk-type cultivator as an example of the walk-type agricultural work machine. In this walk-behind cultivator, an engine (4) is mounted on a front part of a mission case (2) having traveling wheels (1) at its lower part through a front frame (3), and an engine output is transmitted to a belt transmission ( 5) to the mission case (2) and the mission case (2)
Is configured to transmit power from a PTO shaft (not shown) protruding on the right side of the vehicle to the rotary tiller (6) connected to the rear portion of the mission case (2) via the sub chain case (7), Further, the fuel tank (8) is arranged above the mission case (2), and the steering handle (9) is extended rearward from the mission case (2).

A bonnet (10) is provided from the front portion of the engine (4) to the fuel tank (8) so as to be vertically swingable and openable about a front end fulcrum (P). This bonnet (10)
As shown in FIGS. 1 and 2, a protector member (11) having an arcuate shape in plan view that is convexly curved forward and an arcuate shape in front view that connects the left and right rear ends of the protector member (11) to each other. The vertical frame member (12) and the bonnet body (1
3) consists of and.

The protector member (11) is formed by pressing a wide plate material up and down to form a U-shaped vertical cross section. A bracket (14) for a fulcrum is welded and fixed to the center of the inner surface of the engine member. A side-reversed L-shaped stay (15) bolted to the front end face of (4) and the bracket (14) are pivotally connected via a hinge (16) to the fulcrum (P) for opening and closing the bonnet. ) Is configured.

The vertical frame member (12) is formed by pressing a band plate material and has a U-shaped cross section. Both ends of the arch leg are welded and fixed to the inner surface of the rear end of the protector member (11). There is.

Further, the bonnet body (13) is formed by pressing a thin plate material into a shallow bat shape, and its front portion is surrounded by the upper end portion of the vertical frame member (12) and is cantilevered rearward. It is fixed by welding.

The headlight device (17) does not protrude from the member (17), the vertical frame member (12), and the space (A) surrounded by the front part of the bonnet body (13). The vertical frame member (1
It is attached and fixed to 2) via the clamp metal fittings (18) on the left and right.

The bonnet (10) is configured as described above, and in the closed state, as shown in FIG. 2, the fuel tank supporting stay (19) attached to the rear portion of the engine (4) is provided with a knob bolt (20). The rear part of the bonnet is tightened and fixed by the bonnet, and in the open state, the stay (1
5) is the contact member at the open limit, and is held in a posture in which it is released at a right angle.

In the claims of the utility model, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

1 shows an embodiment of a bonnet structure of a walking type agricultural working machine according to the present invention, FIG. 1 is an exploded perspective view of the bonnet, and FIG.
The figure is a vertical side view of the main part of the bonnet closed state. Fig. 3 is a vertical side view of the main part of the bonnet open state. (4) …… Engine, (10) …… Bonnet, (11)…
… Protector member, (12) …… Vertical frame member, (1
3) …… Bonnet body, (15) …… Stay, (17)…
... headlight device, (A) ... space.

Claims (1)

[Scope of utility model registration request] 1. A bonnet structure of a walk-type agricultural work machine, in which a bonnet (10) which can be vertically swung about a front fulcrum (P) is arranged above an engine (4) mounted on the front of the machine. Of the bonnet (10), a protector member (11) having an arched shape in plan view that is convexly curved forward and an arched shape in front view that connects the left and right rear end portions of the protector member (11) to each other. The vertical frame member (12) and this vertical frame member (1
2) is composed of a bonnet body (13) that is connected to the upper part of the enclosure and extends rearward, and the protector member (1
1), vertical frame member (12) and bonnet body (13)
Headlight device (1) in the space (A) formed between the front part of the
7) is arranged and fixed, and the protector member (11)
The bonnet structure of a walk-type agricultural work machine in which the above is pivotally connected to a stay (15) provided at the front of the engine (4).