JPS5810655Y2 - Work vehicle hood frame structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hood frame structure for a working vehicle, which is used as a sunshade to cover a driver's seat, for example.

In this type of vehicle, a structure in which a canopy frame is integrally connected to a support in a cantilevered manner is often used in order to improve comfort and visibility in terms of ventilation and space.

However, in the past, because the top frame was simply made up of pipes with the same diameter over its entire length, bending moments caused by the weight of the top frame due to aircraft vibrations were concentrated at the connection support points between the struts and the top frame. There was a problem with it being easily damaged.

Therefore, in order to reduce the bending moment, it is conceivable to create a tapered shape that gradually becomes smaller in diameter as it moves away from the support point, and move the center of gravity of the canopy closer to the support point, but such a pipe is expensive. Not practical.

In view of the above points, the present invention not only prevents damage to the connecting parts of the struts and the canopy frame by reducing the bending moment of the canopy frame due to vibration, but also makes it possible to manufacture the canopy frame easily and inexpensively. The purpose is to do.

Next, embodiments of the present invention will be described in detail based on the drawings.

Supports 3, 3 are erected near the driver's seat 2 of the vehicle body 1 of the work vehicle, and a hood frame 4 is extended from the support 3 to cover the upper part of the driver's seat 2, so that the work vehicle can be operated with the top covered. It is designed to serve as an awning 5 for the seat 2.

The hood frame 4 has a substantially rectangular frame 6 in the center thereof when viewed from above.
It spans between the opposing frames 6a, 6a, and the center thereof protrudes upward (the ceiling frame 7 is mounted, and the horizontal frame 8... They are constructed by being mounted at a distance from each other.

The frame body 6 is constructed by integrally connecting a large-diameter pipe material 11a and a small-diameter pipe material 11b, and the ceiling frame 7 also includes a large-diameter pipe material 11c and a small-diameter pipe material 1.
1d are integrally connected.

To connect the large-diameter pipe material and the small-diameter pipe material, connect the large-diameter pipe materials 11a and 11c to the small-diameter pipe material 1, respectively.
1b and 11d and are integrally connected by welding, pipe materials of large and small diameters are connected with pins, and the connection position can be changed, so that the area of the entire canopy frame 4 can be changed depending on the weather etc. It may be possible to change it.

Then, the pipe materials 11a, Ilc on the large diameter side approach the support columns 3, 3 (in the direction of the opposed frames 6a, 6
Mounting members 9, 9, which are angled in side view, are mounted at two locations across the pipe material 11a on the larger diameter side of a and the horizontal frame 8 adjacent thereto, and these mounting members 9, 9 The prop 3
, 3. A supporting member 1 having an angular shape when viewed from the side is connected to the tip of each of the 3 parts.
0, and bolted in that state, so that the frame body can be attached to the support column 3.3 in a cantilevered manner.

As a result, the pipe materials 11b and 11d on the small diameter side are
, 3.

In addition, the connection points of large and small diameter pipe materials in the ceiling frame 7 are located closer to the pillars 3 and 3 by the distance between the adjacent horizontal frames 8 and 8 than the connection points of large and small diameter pipe materials in the side frames 6a and 6b. It is.

The present invention is not limited to the one used as a sunshade for the driver's seat as described above, but can also be applied to a canopy frame structure used for various purposes such as rain protection for an engine.

In summary, the top frame structure of a working vehicle according to the present invention includes a frame body 6 which is substantially rectangular in plan view and includes side frames 6b, 6b and opposing frames 6a, 6a, and a side frame 6b.

A ceiling frame 7 is mounted parallel to the frame 6b and extends across the opposing frames 6a, 6a so that its center projects upward.
is constructed by integrally connecting a large-diameter pipe material 11a and a small-diameter pipe material 11b, and the ceiling frame T also integrally connects a large-diameter pipe material 11c and a small-diameter pipe material 11d. The pipe material 11a on the larger diameter side is constructed as follows.

The frame 6 is separated by supporting the mounting members 9, 9 connected to the frame 6 in contact with the mounting members 10 and 10 connected to the pillars 3, 3 so that the mounting members 11c are positioned in the direction approaching the pillars 3, 3. Support post 3
, 3, while the pipe material 11b on the small diameter side, 11
d is located in the direction away from the pillars 3, 3, and the connection points of large and small diameter pipe materials in the ceiling frame 7 are the side frames 6b,
It is characterized by being located closer to the support column 3°3 side than the connection point of the large and small diameter pipe materials in 6b.

In other words, the structural members are thinner on the roadside side (in other words, they are lighter) and the center of gravity of the entire canopy frame 4 is moved closer to the support point, which reduces the bending moment of the canopy frame 4 due to aircraft vibration. In addition, since the connection points of pipe materials of large and small diameters are positioned offset between the ceiling frame 7 and the side frames 6b, 6b, concentration of stress on the connection points can be avoided.
Moreover, since a large-diameter pipe material is used on the supporting point side of the support column 3.3, it has sufficient strength and can be manufactured easily and inexpensively. We have succeeded in preventing damage as much as possible at the 4 attachment points and at the connection points of pipe materials of large and small diameters.

[Brief explanation of the drawing]

The drawings show an example of the hood frame structure of a working vehicle according to the present invention,
FIG. 1 is an overall side view, and FIG. 2 is an exploded perspective view of the hood frame. 3... Strut, 4... Canopy frame, 6...
...Frame body, 6a... Opposing frame, 6b...
Side frame, 7...Ceiling frame, 9...Mounting member connected to the frame, 10...Mounting member connected to the column, lla, 11b, 11c, 11d= = Pipe material.

Claims (1)

[Scope of utility model registration request] The frame body 6 is substantially rectangular in plan view and is composed of the side frames 6b, 6b and the opposing frames 6a, 6a. A ceiling frame 7 is attached to the ceiling frame 7, and the frame body 6 is constructed by integrally connecting a large-diameter pipe material 11a and a small-diameter pipe material 11b, and the ceiling frame 7 also has a large-diameter pipe material 11a and a small-diameter pipe material 11b. Pipe material 11
c and a small-diameter pipe material 11d are integrally connected, and these large-diameter pipe materials 11a and 11c are connected to the frame 6 so that they are positioned in the direction approaching the supports 3, 3. A mounting member 10 connecting the mounting members 9, 9 to the columns 3, 3.
The frame body 6 is attached to the supports 3, 3 in a cantilevered manner by contacting and supporting the pipe materials 11b, 11d on the small diameter side.
, 3, and the connection point of the large and small diameter pipe materials 11c and 11d in the ceiling frame 7 is the side frame 6.
b, 6 b, large and small diameter pipe materials 11a, 1
The hood frame structure of a working vehicle is characterized in that the hood frame structure is located closer to the pillars 3 and 3 than the connection point of 1b.