JPH0699808A - Manufacture of frame for streamline vehicle - Google Patents

Abstract

PURPOSE:To reduce the number of manufacturing man-hours, and to reduce the weight by forming a protruded point intersection and a roof corner part of a protruded driver's cab of a front vehicle, into a box-shape by frame assembly process utilizing the car body frame, without using a dedicated jig. CONSTITUTION:The framework of a protruded part intersection 6 is an I-shape strength member by a cross frame 3, a flat plate longitudinal frame 11a, a longitudinal frame 2, and a reinforcing member 16, in a protruded driver's cab 5 formed on a body 8 of a front car. The framework of a roof corner part 4 forms a rigid member of box-shape closed cross section provided with a roof outer plane 10 after two longitudinal frames 13, 13 are passed through within the bent R of the roof corner part 4, and later with a bottom plate 14. In this structure, since the flat plate longitudinal frames 11a, 11b are flat plates without any ribs, the utilization effect for plate bending work is high, and working thereof is easy. Since the roof corner part 4 is of the cross and longitudinal flat plate frameworks, and of rigid box-shape, bending work of an outer plate is enabled by utilizing these members, and welding and fixation of the bottom plate are also enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leading car frame structure provided with a streamlined projecting cab, which is constructed by incorporating a car body built-in frame into a roof outer plate and a vertical frame. The present invention relates to a method for manufacturing a box-shaped frame.

[0002]

2. Description of the Related Art As described in Japanese Patent Publication No. 63-58462, a conventional frame structure of a high-speed vehicle has two types of rectangular frames in which the upper and lower four corners of a vehicle body are rounded. It was arranged to connect them with stringers. Further, as described in Japanese Patent Publication No. 62-160954 and Japanese Patent Publication No. 62-160955, horizontal and vertical skeletons having a rectangular cross section with cut grooves are fitted at the groove positions in the structure of the frame structure of the streamlined vehicle. There is a former known example in which the skeletons are combined by combining them in a lattice type. In the latter case, there is a publicly known example in which a curved outer plate is formed by using the frame as a mold.

[0003]

SUMMARY OF THE INVENTION The above-mentioned prior art relates to a passenger car fuselage structure of a railway vehicle having both the pressure resistance of a round fuselage and the habitability of a rectangular fuselage, and a frame structure having a local shape change point of the fuselage cross section. There was a problem that was not covered. Further, in the case of combining the framed skeletons with each other in a fitted lattice type, the reduction of the number of parts and man-hours and the improvement of the skeleton strength as a general skeleton structure of a streamlined vehicle body which requires pressure resistance However, there was a problem that the local shape change of the body cross section was not mentioned at all. Further, similarly, in the case where the outer plate is formed by using the frame as a mold, there is a problem in that the shape is locally changed and the strength member constituting surface is formed at the same place.

It is an object of the present invention to employ a horizontal frame built into a vehicle body for assembling a vertical frame with a curved surface, and to improve the roof corner member by combining the vertical frame with a front vehicle with a projecting cab. It is to provide a frame manufacturing method.

[0005]

In order to achieve the above object, the horizontal frame at the intersection of the protrusions is provided with a fitting groove for a flat plate vertical frame which requires curved surface molding and strength, and has a frame having an open I-shaped cross section. In addition to welding and fixing, the roof corner transverse frame is made into a box shape with a closed cross section in the shoulder radius to raise the frame rigidity, and the bottom plate of the box type frame is to be fixed by welding after distortion of the outer plate. Since it is possible to remove the distortion after molding, there is no processing problem.

[0006]

[Function] The body of a high-speed vehicle is required to have a high degree of pressure resistance, and in particular, the protrusion intersection and the roof corner are the points where the cross-section expansion and contraction change and the high stress occur due to the pressure change. The member is strengthened as an I-shaped and box-shaped cross section, which takes advantage of the bending process that employs the cross-bones built into the vehicle body to prevent deformation and improve strength.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a leading vehicle body, which has a body of 8 and a projecting cab of 5 in a body. 6 is an intersection of protrusions, 4 is a roof corner portion, 7 is a roof, 9 is a side surface, and 10 is a roof outer plate. On the body of No. 8, three circular transverse bones having different sizes and shapes, and each of the two longitudinal bones are assembled in a lattice shape in a cut groove fitting state, and 12 fuselage outer plates are stretched. As shown in the cross-sectional view of FIG. 2, in the frame of the projecting cab, each transverse bone 15 has a portal shape whose size and shape are different depending on the arrangement, and is connected to three circular transverse bones. Reference numeral 13 is a vertical bone, and 10 is a roof skin. The skeleton at the intersection of the protrusions is the transverse bone of 3 on the body 8 side,
The flat plate longitudinal bone 11a and the reinforcing vertical bones of the vertical bones 2a and 16 serve as I-shaped strength members. On the skeleton side of the driver's cab, there are 15 horizontal bones, 11b flat plate vertical bones, and vertical bones 13. 11a, 11b on the transverse bones 3 and 15
It has a notch groove 17 so that the flat plate vertical bone can be fitted therein. The frame of the roof corner section 4 is
In the bending radius of the roof corner portion, 10 roof outer plates are stretched after passing two vertical bones 13a and 13b, and 14 bottom plates later form a strong member having a box-shaped closed cross section.

In the above structure, the flat plate longitudinal bones 11a and 11b need to be three-dimensionally curved as shown in FIG. Fitting and mounting, and horizontal bone placement is about 3
Since it is set to 00 mm, it is a highly effective work as a plate bending work and can be easily processed. Next, since the roof corner portion has a strong box shape with a horizontal and vertical flat plate structure, it is possible to employ these members to bend the outer plate. Moreover, since the bottom plate is welded and fixed after the distortion of the outer plate bending is removed, a strong box type having a closed cross section can be formed, which is effective in the pressure resistance of the portal projection cab.

[0010]

According to the present invention, even in the case of a complicated leading car frame structure having a streamlined shape, the car body frame is employed as a skeleton assembling process without requiring a special jig process. There is a reduction effect. Further, since the outer plate can be strained at a high stress generation point and an I-shaped or box-shaped member which is advantageous in pressure resistance and has no bending can be configured, it is effective in terms of man-hours and light weight.

[Brief description of drawings]

FIG. 1 shows a skeleton structure of a leading vehicle provided with a projecting cab.

2 is a perspective view of the frame of the vehicle body taken along the line 2-2 of FIG.

FIG. 3 is a front view of the skeleton of the intersection of the protrusions of the present invention.

[Explanation of symbols]

2 ... longitudinal frame, 3 ... circular transverse frame, 4 ... roof corner, 6 ... projection intersection, 8 ... body, 11 ... flat plate longitudinal frame, 13 ... roof longitudinal frame.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeo Miyajima 794 Higashitoyoi, Kudamatsu City, Yamaguchi Prefecture Stock company Hitachi Ltd. Kasado Plant

Claims (1)

[Claims] 1. A skeleton structure of a streamlined leading vehicle is a structure in which horizontal and vertical skeletons each having a rectangular cross section are combined in a lattice type, and an outer plate is laid on the skeleton structure. In the structure where the projecting cab is provided, the skeleton at the intersection of the projecting parts employs a plurality of horizontal bones to incorporate vertical bones,
The projecting roof corner portion is a box-shaped body having a closed cross-section in the bending radius with the outer plate and the vertical frame, and the bottom plate of the box-shaped frame is welded and fixed after the outer plate is strained. Frame construction method.