JPH0680078A - Bogie frame for superconductive, magnetic levitation - Google Patents

Abstract

PURPOSE:To improve strength of a bogie frame for a magnetic levitation type vehicle, lighten its weight, and improve assemblage. CONSTITUTION:A box girder which is formed by assembling aluminium alloy honeycomb panels into a box shape in its section is set to a side bean 1. A plurality of lateral beams 4 penetrate both side panels of the box girder constituting the side beam and are attached in such a manner as crossing to the side beam at right angles so as to be formed into an approximately curb shape. Having brazed honeycomb structure of aluminium alloy, the bogie frame for magnetic levitation rolling stock is light-weighted and has high strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bogie frame for both railroad passengers, and more particularly to a bobbin frame for magnetic levitation in which honeycomb panels made of aluminum alloy are assembled to reduce the weight.

[0002]

2. Description of the Related Art A bogie frame for a railroad vehicle is shown in FIG. 4 as a hollow square tube made of cast steel or a box girder of a square tube in which two materials obtained by press-forming a steel plate into a U shape are welded into a box shape. It is assembled and configured like an Izutsu.

Recently, however, a magnetic levitation railway has been put into practical use, and a bogie frame used for the magnetic levitation railway is being made of an aluminum alloy in order to reduce its weight.

As shown in FIG. 5, a trolley used for a magnetic levitation railway has an upper trolley frame (device frame B) as a device frame for supporting on-vehicle devices and a lower part for supporting a superconducting magnet (hereinafter referred to as SCM). It is composed of a bogie frame (support frame A), and these bogie frames are about to be made of an aluminum alloy material in order to reduce the weight.

[0005]

That is, even if the bogie frame used in the magnetically levitated linear motor car, which is currently being put into practical use, is made of an aluminum alloy, it still has a weight problem and is further lightweight. Consideration is being made.

Therefore, a honeycomb structure used in aircraft, that is, an aluminum honeycomb material has been nominated as a candidate. However, since the conventional aluminum honeycomb is a bonded honeycomb in which corrugated plate materials are bonded with an adhesive, even when formed into a panel. It has the drawback that it cannot be welded and cannot be used for members requiring strength.

Therefore, the present invention has been made in view of such drawbacks of the prior art, and it is an object of the present invention to provide a bogie frame having a structure which is lightweight and has a good workability (weldability, etc.). It is a thing.

[0008]

Means for Solving the Problems As a result of extensive studies to achieve the above object, a brazing honeycomb core made of an aluminum alloy and a honeycomb panel brazed to an aluminum alloy face plate (hereinafter referred to as a honeycomb panel or simply a panel) are By using an aluminum alloy backing metal (hereinafter simply referred to as backing metal) and aluminum alloy coupling metal fittings (hereinafter simply referred to as coupling metal fittings or corner metal fittings), it is possible to facilitate welding and reduce weight. The present invention has been completed by finding that it can be realized and the honeycomb panel can be used as a strength member.

That is, the gist of the present invention is to provide a honeycomb panel in a bogie frame in a magnetic levitation bogie constituted by connecting a pair of left and right side beams with transverse beams orthogonal to the opposite side surfaces of the side beams. A box girder assembled in a box-shaped cross section through a corner metal fitting and a backing metal is a side beam, and a cylindrical material or a square tube material is a lateral beam, and a plurality of lateral beams corresponding to the SCM mounting positions constitute the side beam. The superconducting magnetic levitation bogie frame, which penetrates the honeycomb panels on both side surfaces of the box girder and is installed so as to be orthogonal to the side beams, is configured in a substantially tubular shape as the first invention, and the side beams are made of a pair of aluminum alloys. The side face honeycomb panels 1a, 1a, the pair of aluminum alloy top plates and the bottom plate honeycomb panels 1b, 1b are combined in a square cross section through the aluminum alloy backing plate 2 so that their one ends are in contact with each other, Honeycomb panel 1a, 1a, 1b,
Superconducting magnetic levitation constructed by inserting and welding aluminum alloy corner metal fittings 3 each having a convex outer periphery and a flange 3a protruding from both outer edges into the four corner openings formed by the end faces of 1b. A bogie frame is a second invention.

[0010]

The bogie frame for a magnetically levitated vehicle configured as described above has a box girder formed by assembling a honeycomb panel, a corner metal fitting and a backing metal in a box-shaped cross section as a side beam, and an aluminum alloy cylindrical material or a corner. Welding work is easy because the tubular material is a horizontal beam, and the horizontal beams penetrate through the side faces of the both side beams, and a plurality of SCM mounting positions are attached so as to be orthogonal to the side beams and are assembled in a well tube shape. Thus, the bogie frame having high strength and rigidity, the SCM mounting portion can be reinforced by the cross beam, and the weight is reduced can be obtained.

The side beams of the bogie frame for a magnetically levitated vehicle configured as described above are composed of box girders in which honeycomb panels are combined in a box shape through corner fittings and backing metal. The honeycomb panels 1a and 1b can be joined to each other through the corner metal fittings and the backing metal, which facilitates the welding work. In addition, the honeycomb panel and the corner fitting are integrated by welding, and a side beam having high strength and rigidity and a reduced weight can be obtained. Further, since the corner metal fitting can use an extruded material of aluminum alloy, it can have a high strength and a uniform shape, so that a cross-sectional shape with good assembly accuracy can be obtained when assembled into a box girder.

[0012]

EXAMPLES Examples will be described with reference to the drawings. Embodiment 1 FIG. 1 is a perspective view of a bogie frame for a magnetically levitated vehicle according to the present invention, and FIG.
2A and 2B are views showing a sectional structure of a side beam of a bogie frame and a mounting structure of a lateral beam and a side beam.

First, a method of manufacturing the honeycomb panel 100 will be described.

A brazing sheet 101 having an aluminum alloy as a core material and a brazing material as a skin material is bent and formed into a trapezoidal corrugated shape as shown in FIG. 3a, and these are combined, and flat portions are brought into close contact with each other to form a honeycomb honeycomb. The core 110 is manufactured. A face plate 120 made of two aluminum alloy brazing sheets on the upper and lower surfaces of the honeycomb core 110.
Sandwiched between them and joined by brazing to make a honeycomb panel 100
Is produced.

Long honeycomb panels 1a, 1b and 1c are cut out from the honeycomb panel manufactured as described above and assembled into a box-shaped cross section using the honeycomb panels 1a, 1b, the corner metal fittings 3 and the backing metal 2. Create two box girders. The two side beams 1, 1 are arranged in parallel, and a plurality of horizontal beams 4, 4 made of an aluminum alloy cylindrical material are attached to opposite side surfaces so as to be orthogonal to the two side beams 1, 1.

As shown in FIG. 2a, the side beams and the lateral beams are assembled by passing the lateral beams 4 through the honeycomb panels 1a, 1a on the opposite side surfaces of the both side beams 1 and orthogonally to the side beams. After mounting, the backing plates 5 and 5'are arranged with the honeycomb panels 1a and 1a sandwiched between them on both sides, and assembled by welding to form a support frame A. However, the honeycomb panels 1b, 1b on the upper and lower surfaces of the side beams to which the lateral beams are attached
Is preferably attached together with the corner metal fitting 3 after the welded joint is completed.

Further, as shown in FIG. 2b, flange-shaped metal members 5a and 5b may be inserted between the side beam honeycomb panels 1a and 1b and the horizontal beam to join them.

With the above structure, the welding work between the honeycomb panels is facilitated, the strength and rigidity of the structure are high, and the SCM mounting portion can be reinforced by the horizontal beam.
Moreover, it is possible to obtain a bogie frame which is lighter than the case where only the aluminum alloy plate material is used.

That is, when the strength and rigidity of the structure are made equal (that is, the deflection of the central load point portion is made equal at the time of conducting the three-point bending test), the weight of the aluminum alloy plate material alone is set. That is, the structural trolley frame using the honeycomb panel of the present invention has a weight of 50 kg, which is approximately 30 kg (40%). Example 2 Long honeycomb panels 1a, 1b, and 1c were cut out from the honeycomb panel manufactured in the same manner as in Example 1 described above, and two honeycomb panels 1 were prepared.
The backing metal 2 is bonded to the four corners of one side of a. Next, as shown in FIG. 2, the side face honeycomb panel 1a and the top plate / bottom plate honeycomb panel 1b are formed into a rectangular cross-section so that the top plate honeycomb panel 1b and the bottom plate 1b are in contact with each other through their backing plates 2 so that their one ends are in contact with each other. In combination, the face plates at the corners of the four corner openings formed by the end faces of the side face honeycomb panel and the top plate and the bottom plate honeycomb panel are welded and joined. After that, the corner fittings 3 each having a convex outer periphery and having a flange 3a protruding from both outer end edges thereof are inserted into the four corner openings formed by the end faces of the side face honeycomb panel and the top plate / bottom plate honeycomb panel, The flange 3a of the corner metal member and the face plate of the honeycomb panel are assembled into a box by welding. Further, the end face honeycomb panel 1c was welded and joined in the same procedure as in the above 1b to form a side beam.

Regarding the side beams thus manufactured,
A bending test and a torsion test were performed to measure the relationship between the ratio of load and weight and the deflection.

Further, a side beam similar to the side beam of the present invention was prepared by using an aluminum alloy plate material having a plate thickness capable of being welded and assembled as a comparative side beam, and the same test was conducted.

The results of these tests are shown in FIG. As can be seen from FIG. 6, the side beam of the present invention made of a lightweight honeycomb panel can bear a load of several times its own weight, whereas the side beam made of an aluminum alloy sheet is supported only by its own weight.

[0023]

According to the present invention, the following effects can be obtained.

Since the honeycomb panel of the side beam used for the SCM support frame is completely integrated by brazing the aluminum honeycomb core and the face plate, it is high in strength and stable, and in addition, the four corners are provided with corner fittings and It is held by a backing metal, and both front and back sides are joined by welding, so it has high strength as a beam, excellent weather resistance and durability,
Can be lightened. In addition, by connecting one set of side beams with a plurality of aluminum alloy cylindrical members or prismatic members, the SCM can be easily attached, and the strength and rigidity are high.
Moreover, it is possible to obtain a bogie frame having a reduced weight.

[Brief description of drawings]

FIG. 1 is a perspective view of a bogie frame for a magnetically levitated vehicle according to the present invention.

FIG. 2a is a view showing a sectional structure of a side beam of a bogie frame.

FIG. 2b is a view showing a mounting structure of a lateral beam and a side beam.

FIG. 3a is a diagram showing a first step of a method for manufacturing an aluminum alloy honeycomb panel.

FIG. 3b is a diagram showing a second step.

FIG. 3c is a diagram showing a third step.

FIG. 4 is a diagram showing an outline of a conventional bogie frame.

FIG. 5 is a diagram showing an outline of a magnetic levitation vehicle.

FIG. 6 is a diagram showing a bending test result of a side beam.

[Explanation of symbols]

 1 side beam 1a, 1b, 1c panel 2 back metal 3 corner metal fittings 4 lateral beam 5, 5 ', 5a, 5b metal

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[Procedure amendment]

[Submission date] October 15, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masayoshi Azagami 2-8, Hikarimachi, Kokubunji, Tokyo 38 Inside the Railway Technical Research Institute (72) Kenichi Kato 2-8, Hikaricho, Kokubunji, Tokyo 38 Inside the Railway Technical Research Institute

Claims (2)

[Claims] 1. A bogie frame of a magnetic levitation bogie constituted by connecting a pair of left and right side beams with a plurality of lateral beams orthogonal to opposite side surfaces of the side beams, wherein an aluminum alloy honeycomb panel is made of aluminum. A box girder assembled in a box-shaped cross section through an alloy corner metal fitting and an aluminum alloy backing metal is a side beam, an aluminum alloy cylindrical material is a horizontal beam, and a plurality of horizontal beams corresponding to the superconducting magnet mounting positions are provided. Penetrate through the aluminum alloy panels on both sides of the box girder that constitutes the side beam, and attach it as if it were orthogonal to the side beam,
A bogie frame for superconducting magnetic levitation characterized by being configured in a substantially well-tube shape. 2. The side beams are configured such that a pair of aluminum alloy side face honeycomb panels (1a, 1a), a pair of aluminum alloy top plates and a bottom plate honeycomb panel (1b, 1b) are in contact with each other at one edge thereof. Combined into a square cross section through an aluminum alloy backing metal (2), the outer periphery is convex at the four corner openings formed by the end faces of each honeycomb panel (1a, 1a, 1b, 1b), and both 2. The bogie frame for superconducting magnetic levitation according to claim 1, wherein an aluminum alloy corner metal fitting (3) having a collar (3a) protruding from the outer edge is inserted and welded.