JP2001114498A - Cab cabin for working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabin of a pipe structure capable of easily mounting a slide door and a slide window with respect to a cab cabin of a vehicle for civil engineering, or loading and unloading work. SOLUTION: This cab cabin has a frame member formed by bending a pipe of modified cross-section. The pipe of modified cross-section has such a modified cross-section that a circular arc corner is formed at its one corner, one side connected to the circular arc corner is extended and bent to form a hood-shaped rib, an end of the other side connected to the circular arc corner is bent o form an outer rib, and two C-shaped grooves are formed in adjacent to the outer rib. The two C-shaped grooves form a guide of a double sliding window by fitting a run channel. A fixed transparent plate or metallic plate can be fixed to the outer rib through a rubber member for a window frame of H-shaped cross-section when it is mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a cabin provided in a driver's seat of a civil engineering work vehicle such as a bulldozer or a power shovel or a cargo work vehicle such as a crane truck or a forklift. The present invention relates to a pipe-structured cabin having a door.

[0002]

2. Description of the Related Art In a forklift and the like used indoors, there is a driver's cabin having a simple structure in which a ceiling panel is attached to a column formed of a pipe material or the like. It is common to install a closed cabin in the driver's seat. The closed cabin is usually manufactured by forming a frame by welding a large number of parts which are punched out by a press and then bent or drawn into a desired shape, and a door or a window frame is attached to the frame. Since a working vehicle generally requires a wide field of view, the front and side surfaces of the driver's seat often have windows and transparent panels fitted therein, and the frame has a frame shape that supports these windows and panels.

FIG. 11 is a sectional view showing a part of a driver's seat cabin having a sheet metal structure, and is a partial sectional view showing a portion connecting a side surface of a cabin having a sliding window on a side surface to a ceiling surface.

The frame of the cabin having the conventional structure has an outer panel 41 and an inner panel 4 which are elongated in a direction perpendicular to the plane of the drawing.
2 and the ceiling frame 43. The cross-section of the outer panel 41 has a shape in which the lower side of the horizontal U-shape is bent from the middle to the lower side, and the cross-section of the inner panel 42 has a shape in which a vertical side of the inverted L-shape is provided with a step. A rectangular pipe-shaped frame member 45 having upper and lower ribs is formed by spot welding the extending portion and the portion extending vertically downward, and the side of the ceiling frame 43 is welded to the upper horizontal rib. I have.

The lower vertical rib 44 is formed on the inner side of the center of the frame member 45, and a clip member 46 which is elongated in the direction perpendicular to the paper of FIG.
, The window frame material 47 is fixed. The window frame member 47 includes three ribs 49, 50, 51 forming two U-shaped cross-sectional grooves 48 for guiding two sliding windows, and side edges 52 fixed by the clip member 46. The member is elongated in the direction perpendicular to the plane of the drawing. Spacers 53 and 54 are fixedly interposed between the window frame member 47 and the frame member 45 with an adhesive or the like.
A run channel for guiding the window glass is inserted into the U-shaped groove 48.

[0006]

The cabin structure shown in FIG. 11 is suitable for producing a large number of cabins having the same shape, since high-speed production can be performed by a press machine and an automatic welding machine. However, with the diversification of the work and the models used for the work, the cabins of the work vehicle also tend to have more varieties and a decrease in the production quantity of each kind. In the case of a cabin with a sheet metal structure, the production cost of the press mold, which is the initial cost, is high, so if the production volume is small,
The production cost per unit increases sharply.

[0007] Further, the working vehicle may be designed according to the type of work.
It is necessary to secure good visibility in various directions such as front and lower and side and rear, and a structure in which windows that can be opened and closed at various places is preferable so that a good visibility can be secured even in rainy weather or the like. In addition, as for doors and windows provided in a cabin, there is a tendency that a sliding type door or window which does not swing when a vehicle or a driver's seat turns is preferred.

Therefore, the present invention provides a work vehicle which can be manufactured at a low cost even when a cabin having a relatively small number of rods is manufactured, and can easily cope with a demand for mounting a slide door or a slide window in various places. The task is to get a cabin.

[0009]

SUMMARY OF THE INVENTION A driver's seat cabin of a working vehicle according to the present invention includes a frame member 1 formed by bending a pipe having an irregular cross section. The modified cross-section pipe forming the frame member forms an eave-shaped rib 13 by making one corner an arc corner 11 and extending and folding one side connected to the arc corner,
The outer rib 15 is formed by folding the end of the other side continuing to the arc corner, and has a substantially rectangular cross-sectional shape in which two U-shaped cross-sectional grooves 18 are formed adjacent to the outer rib 15.

An outer peripheral edge including a front edge, an upper edge and a rear edge of the side surface of the driver's seat cabin is fitted to the eave-shaped rib 13 of the pie portion having the irregular cross section.
To the inside of the cabin and to form the U-shaped cross-section groove 18 inwardly in the bending direction of the pipe, and to provide the intermediate frame members 2, 9 parallel to the front edge, the upper edge or the rear edge thereof.
The cabin can be provided with sliding doors and sliding windows.

[0011] The deformed cross-section pipe having the above-mentioned cross-sectional shape is formed by a method of forming a steel strip by forming, that is, gradually deforming the cross-sectional shape by a number of pressing rollers arranged in the passage while feeding the steel strip in the longitudinal direction. be able to. For forming, it is necessary to prepare a roller according to the cross-sectional shape to be formed, but it is much cheaper than a press die. Therefore, when the number of rods is small, the driver's cabin having the above structure can be manufactured at a much lower cost than the conventional sheet metal structure.

The two parallel U-shaped grooves 18 formed in the irregularly shaped pipe form guides for sliding windows by fitting the run channels 21 into the grooves. If a transparent plate or a metal plate is used, it can be fixed to the outer rib 15 through a rubber member for a window frame having an H-shaped cross section.

On the side of the eave-shaped ribs 13, beams or metal panels connecting the pipes with irregular cross sections on both sides are welded to form a cabin frame. When the beam is provided, a transparent panel fitted and killed with the rubber member having the above-described H-section is attached to the frame formed by the modified cross-section pipe and the beam on the side surface of the cabin, or the eave-shaped rib 13 and the beam are swung. An opening / closing window which is pressed against and closed on the inner side surface of the vehicle can be provided. This type of opening / closing window has been widely used as a front window having a structure that is lifted up to the inside of a cabin ceiling panel when opened.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a first embodiment of a modified cross-section pipe used in a driver's cabin according to the present invention. 1 is a steel pipe having a relatively small thickness. One of four rectangular corners (arc corners) 11 has an arc shape having a large radius of curvature, and an upper side 12 extending from the arc corner 11 is opposite. The outer ribs 15 are formed by extending and folding back to form the eaves-like ribs 13, and the outer sides 15 are formed by extending and folding the vertical sides 14 downward, and the intermediate ribs 16 are arranged adjacent to the outer ribs at equal intervals. By forming the inner rib 17 and the inner rib 17 upright, two U-shaped grooves 18 are formed, and the opposing corner 19 opposing the arc corner 11 has an arc shape with a small radius of curvature.

The protrusion height of the inner rib 17 is the same as that of the outer rib 15, and the protrusion height of the intermediate rib 16 is lower.
This deformed cross-section pipe is manufactured by forming a steel strip into a strip, and the ribs 15, 16, and 17 have a two-piece structure folded back at the tip side, and two pieces are joined at the eave-shaped rib 13 portion. Both sides of the strip steel plate are spot-welded to form a pipe cross section.

FIGS. 2 to 5 show the modified cross-section pipe 1 of FIG.
FIG. 4 is a view showing an embodiment of a door-side side surface of a driver's cabin of a power shovel in which an outer peripheral frame of the side surface is formed.

The outer peripheral frame on the side of the door of the cabin shown in FIG. 2 has the eave-shaped ribs 13 of the pipe having a modified cross section shown in FIG. 1 facing the inside of the cabin and the U-shaped grooves 18 facing the inside in the bending direction of the pipe. , By being bent into a predetermined shape. Inside the outer peripheral frame, the intermediate pillar 2 and the short horizontal frame material 3
The door opening 31, the rear window opening 32, and the lower panel opening 33 are formed by partitioning. The U-shaped cross-section groove 28 having the same shape as the two U-shaped cross-section grooves 18 formed on the odd-shaped cross-section pipe 1 is formed on both side surfaces of the intermediate pillar 2 (see FIG. 5).

FIG. 3 is a view showing a section (section of the trailing edge) of the portion A in FIG. 2. A run channel 21 is inserted into the U-shaped section groove 18 and an H-shaped rib is inserted into the eave-shaped rib 13. The rear transparent plate 4 fitted and killed via the rubber 22 is mounted. The run channel 21 is also fitted into a U-shaped cross-sectional groove 28 facing the rear window opening 32 of the intermediate column 2, and the four run channels are used to mount the run channel 21 in the rear window opening 32. Window glass 5 is guided.

A rubber door stopper 6 is attached to the irregularly shaped pipe around the door opening 31 and the inner rib 17 of the intermediate column.
Is mounted, and the peripheral edge of the door 35 contacts the door stopper and is closed. The front window 7 is provided so as to be pressed from inside and closed by a packing 23 fitted to the eave-shaped rib 13 of the pipe having a modified cross section that forms the front edge of the outer peripheral frame. The lower panel opening 33 is closed by butt-welding the peripheral edge of the steel plate panel to the outer rib 15 (see FIG. 4).

FIG. 6 is a diagram showing an example of the side surface on the beam side of the driver's seat cabin. The outer peripheral frame on the beam side surface is formed of a modified cross-section pipe having a cross-sectional shape shown in FIG. The shape shown in FIG. 7 is a shape in which the inner rib 17 in FIG. 1 is widened to increase the sectional area of the pipe. A horizontal girder 9 is attached to the outer peripheral frame formed by bending the pipe 1 having the irregular cross section.
And the oblique member 10 thereunder are welded. These girder members 9 and diagonal members 10 are made of the same material as the intermediate pillar 2 on the door side surface. Therefore, there are two U-shaped grooves on the upper and lower sides of the girder member 9, and the sliding window 5 which is opened to the left and right is mounted by the two U-shaped grooves and the U-shaped grooves of the modified cross-section pipe forming the outer peripheral frame. Steel plate panels 8 are welded to openings below the beam members 9.

In the above-mentioned cabin, the outer peripheral frame on the side surface of the cabin is formed by the bent cross-section pipe 1, but a front frame and a rear frame can also be formed. FIG. 8 shows an example in which an outer peripheral frame on the rear surface of the cabin is formed by bending one pipe 1 of irregular cross section, and can be adopted when a sliding window 5 is provided on the rear surface. The structure of the back of the cabin is basically the same as the structure of the side surface on the beam side shown in FIG.

FIGS. 9 and 10 are views showing other cross-sectional shapes of the deformed pipe. 9 is narrower than that of FIG. 1 and has a width substantially equal to the interval between the outer rib 15 and the inner rib 17 on both sides of the two U-shaped grooves 18.
FIG. 10 shows an example in which a part of the pipe facing the outside of the side surface is slightly inclined.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a modified cross-section pipe.

FIG. 2 is a diagram showing a door-side side surface of the first embodiment of the cabin.

FIG. 3 is a sectional view of a portion A in FIG. 2;

FIG. 4 is a sectional view of a portion B in FIG. 2;

FIG. 5 is a sectional view of a portion C in FIG. 2;

FIG. 6 is a diagram showing a beam side surface of the first embodiment of the cabin.

FIG. 7 is a cross-sectional view showing a modified cross-section pipe on the side surface on the beam side.

FIG. 8 is a view showing the rear surface of the cabin of the second embodiment.

FIG. 9 is a cross-sectional view showing another example of a deformed cross-section pipe.

FIG. 10 is a cross-sectional view showing still another example of a modified cross-section pipe.

FIG. 11 is a cross-sectional view showing an example of a frame member of a driver's cabin having a sheet metal welding structure.

[Explanation of symbols]

 1 Irregular cross-section pipe 11 Arc corner 13 Eave-shaped rib 15 Outer rib 18 U-shaped groove

Claims (2)

[Claims] 1. A frame member obtained by bending and forming a pipe having an irregular cross section.
In the cabin of a driver's seat of a working vehicle provided with (1), the modified cross-section pipe has an arc-shaped corner (11), and an eave-shaped rib is formed by extending and folding one side connected to the arc-shaped corner.
(13) is formed, and an outer rib (15) is formed by folding back the end of the other side connected to the arc corner, and this outer rib (15)
A driver's seat cabin of a working vehicle, having a substantially rectangular cross-sectional shape formed with two U-shaped cross-sectional grooves (18) adjacent to the vehicle. 2. A frame member obtained by bending and forming a pipe having an irregular cross section.
In the cabin of a driver's seat of a working vehicle provided with (1), the modified cross-section pipe has an arc-shaped corner (11), and an eave-shaped rib is formed by extending and folding one side connected to the arc-shaped corner.
(13) is formed, and an outer rib (15) is formed by folding back the end of the other side connected to the arc corner, and this outer rib (15)
Is a substantially rectangular cross-section pipe having two U-shaped cross-section grooves (18) formed adjacent to it, and the front edge, upper edge and rear edge of the side face are eave-shaped ribs (1
An intermediate frame formed of the modified cross-section pipe bent 3) toward the inside of the cabin and the U-shaped cross-section groove (18) toward the inside of the pipe in the bending direction, and parallel to a front edge, an upper edge or a rear edge thereof. Characterized by being formed including the member (2),
Driver's cabin of a work vehicle.