JPH04292258A - Framed structure used with fiber reinforced plastic composite material - Google Patents

Abstract

PURPOSE:To manufacture a framed structure inclusive of a beam-to-beam joint as a whole so easily as well as to make sufficient strength reliability securable, in a framed structure used with a fiber reinforced plastic composite material. CONSTITUTION:A fiber reinforced composite material-make beam 2 being set up in the longitudinal direction and another fiber reinforced plastic composite material-make beam 3 being joined to a side face of the beam 2 are joined together, and a plate of the fiber reinforced plastic composite material and made up of orienting a fiber so as to traverse a joint boundary between these beams themselves is lapped in pile on a flange part between the side beam 2 and the side beam 3 by means of molding.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame structure, and more particularly to a frame structure using a fiber-reinforced resin composite material.

0002

2. Description of the Related Art Conventionally, a bogie frame for a railway vehicle has been considered as a frame structure using a fiber-reinforced resin composite material, such as a carbon fiber-reinforced resin composite material (hereinafter simply referred to as CFRP). An example of the bogie frame is JP-A-56-907.
71, JP-A-61-143257 and JP-A-62-24
4755 etc. Of these, JP-A-56-9077
1 uses a fiber-reinforced material for the bogie frame, which is H when viewed from the top.
It is constructed by arranging members in a letter shape, and the left and right ends of the H shape are combined with the axle at four locations. This makes it possible to utilize a part of the bogie frame as a primary spring member, connect the wheel set and the cross member without any joints, and reduce the weight. Furthermore, JP-A No. 61-143257 uses CFRP to construct a bogie frame with bending rigidity comparable to the spring constant of the shaft spring, and omit the shaft spring and damper to reduce the weight of the bogie frame. . Here, the bending rigidity of the bogie frame is determined by the cross-sectional shape,
The plate thickness and fiber orientation angle are selected and adjusted. Japanese Patent Application Laid-Open No. 62-244755 discloses a side beam made of composite material constituting a bogie frame, in which the side beam is constructed by combining several types of plate materials and foam to improve bending strength and load stability.

[0003] In addition, in Utility Model Application No. 61-70103, a member with an H-shaped cross section was formed by overlapping C-shaped members with webs and arranging fiber-reinforced resin with different fiber orientation and thickness inside the C-shaped member. This is aimed at improving rigidity.

0004

[Problems to be Solved by the Invention] The above-mentioned prior art is based on CF
Although the method of forming individual members and the overall shape of a frame structure made of RP is described, it is not possible to connect one beam to the longitudinal side of the other beam, that is, to connect the cross beam to the side beam. No consideration is given to the manufacturability of the entire frame structure to be formed.

[0005] The present invention is a frame structure constructed by joining a plurality of beams made of fiber-reinforced resin composite material, and the entire structure including the joints of each beam can be easily manufactured and sufficient strength and reliability can be ensured. The purpose is to do so.

[0006]

[Means for Solving the Problems] The present invention includes a plurality of beams made of fiber-reinforced resin composite material, and a cross-sectional shape of the plurality of beams consisting of upper and lower flange portions and a web connecting each of the flange portions. A frame structure is formed by overlapping and bonding plate materials integrally formed with fibers oriented to cross the bonding boundary between the upper and lower surfaces of the flange portions of each beam.

[0007] Furthermore, the present invention has longitudinal members on both sides of the structure that correspond to the longitudinal direction thereof, and a region along the longitudinal members and a region connecting the longitudinal members that are integrated, and the members are connected in the vertical and horizontal directions. A frame structure in which a plurality of connected frames are arranged side by side in the width direction, and a state in which the web surfaces of longitudinal members are arranged on both ends of the frame structure in the width direction so that the web surfaces of the longitudinal members are overlapped with the web surfaces of the frame structure. A frame structure is formed from the longitudinal members and a plate material which is overlaid on the upper and lower surfaces of the frame structure and integrally formed with fibers oriented so as to cross the joint boundaries of each member.

[0008]

[Operation] The first structure is superimposed on each beam forming the structure, the flange portions on the upper and lower surfaces of each beam,
Since the beams and the plates that connect the beams are individually molded, the entire structure can be easily manufactured by simply joining them together. In addition, when a bending or torsional load is applied to each beam of the structure, since each beam is individually formed, its own strength is highly reliable, and each beam is joined by an integrally formed plate. This allows the load to flow smoothly at the joint, improving strength.

Next, according to the second structure, among the members forming the structure, the longitudinal members, the framework, and the integrally molded upper and lower plates are joined by overlapping their respective planar parts. Because it is constructed with can be suppressed. Further, the main members of the structure are the framework, the longitudinal members, and the plates disposed on the upper and lower surfaces, so that the total number of parts can be reduced. Therefore, the number of types of jigs for molding the member can be reduced.

0010

[Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
This is explained by: FIG. 1 is a perspective view of a bogie frame to which the present invention is applied, FIG. 2 is an enlarged view of the "A" part in FIG. 1, and FIG.
This is a 3-3 cross section. In the figure, 1 is a bogie frame, 2 is a side beam, 3 is a cross beam, 4 is a plate, 5 is a joint with an L-shaped cross section (hereinafter referred to as L-shaped joint), and 6 is a bolt/nut. The side beams 2, cross beams 3, and plate materials 4 are made of carbon fiber reinforced resin composite material (hereinafter simply CF), which is one of fiber reinforced resin composite materials.
RP). In this example,
First, the side beams 2 and cross beams 3 each having an I-shaped cross section are individually preformed using CFRP. In addition, in parallel with this, CFRP plates 4 are preformed to be disposed on the upper and lower flange portions of the side beams 2 and cross beams 3, respectively. Here, the main orientation Y of the carbon fibers in the plate material 4 is such that it crosses the joint boundary X between the side beam 2 and the cross beam 3, as shown in FIG. be considerate. Further, since the plate members 4 are arranged on the upper and lower surfaces of the side beams 2 and cross beams 3, respectively, the stress against bending moment becomes maximum within the same cross section, even in the general area, for example. Therefore, the orientation of the carbon fibers in the entire plate material 4 is determined taking these factors into account, and the entire plate material 4 is integrally formed. Here, the overall size and shape of the plate material 4 is such that it overlaps the entire upper and lower flange surfaces of the side beam 2 and the cross beam 3.

Next, as shown in FIGS. 1 and 3, after arranging the side beams 2 on both sides and the cross beams 3 between the side beams 2, the flange surfaces 2a of the upper and lower surfaces of the side beams 2 and 3 are disposed. , 3a and fixed with a jig, the entire bogie frame 1 is finally formed. L-shaped joints 5 are provided on the web surfaces of the side beams 2 and cross beams 3, and are connected with bolts and nuts 6 as shown in FIG. Depending on the magnitude of the applied load, this L-shaped joint 5 can be fixed with a jig together with other parts during the main molding of the bogie frame 1, and can be integrally molded without using bolts and nuts 6.

[0012] In the bogie frame 1 having such a member structure,
When a vertical load is applied to the side beam 2, most of the bending moment generated in the side beam 2 is borne by the integrally formed plate 4 and the flange portion 2a of the side beam 2. On the other hand, most of the shear force between the side beams 2 and the cross beams 3 is transmitted via the L-shaped joint 5 disposed between the two beams. In addition to these, lateral bending and torsional loads act on the bogie frame 1, but in any case, the bending load is applied to the plate material 4 mainly on the side beams 2 and 3, and the shear force between both beams is on the L-shaped joint 5. Force is transmitted throughout. In this case, large stress is generally generated at the joint between the side beam 2 and the cross beam 3. However, since these parts are provided with integrally molded plate material 4 and the manufacturing precision of the material itself is good, the allowable stress can be set high and the strength reliability is also improved.

FIGS. 4 and 5 are cross-sectional views of a portion corresponding to the section 3--3 in FIG. 1, showing second and third embodiments of the present invention. In the figures, the same reference numerals as in the first embodiment indicate the same members. 7 is a flat plate gusset joint disposed inside the flange portions 2a, 3a of the side beam 2 and the cross beam 3. 8 is the joint between the side beam 2 and the cross beam 3, and the inner side of the flange portions 2a and 3a of the side beam 2 and the cross beam 3 and the webs 2b and 3.
This is a three-dimensional joint that can be overlapped on both sides of b at the same time, and has the shape shown in FIG. In these embodiments, the side beams 2, cross beams 3, and plates 4 constituting the bogie frame 1 are individually preformed as in the embodiments shown in FIGS. 1 to 3. Next, when assembling each member, in the embodiment shown in FIG. 4, the flat plate gusset joints 7 are arranged so as to overlap the flange portions 2a and 3a of the side beam 2 and the cross beam 3 at the same time. Here, in the flat plate gusset joint 7, the cross beam 3 has an I-shaped cross section, and the web 3b
Place it on the flange surfaces on both sides. In the embodiment shown in FIG. 5, when combining each member, the flange part 8a of the three-dimensional joint 8 is connected to the flange part 2 of the side beam 2 and the cross beam 3.
The inner surfaces of a and 3a and the web 8b are overlapped and connected to the webs 2b and 3b of the side beam 2 and the cross beam 3, respectively. in this case,
The three-dimensional joint 8 is divided into upper and lower parts, and the webs 2b, 3b and flange surfaces 2a, 3a of the side beam 2 and cross beam 3, respectively.
To enable easy superimposition. Further, the joint shown in FIG. 5 is formed by using both adhesive and mechanical connection using bolts and nuts as necessary. Or, bogie frame 1
It is integrally formed with the side beams 2, cross beams 3, and plate materials 4 during the main forming. In a bogie frame using such a joint structure of side beams and cross beams, the joint rigidity of the joint portion is greater than that of the first embodiment shown in FIG. 3. Therefore, when various loads such as bending and torsional loads are applied to the bogie frame, the overall rigidity and strength reliability including the joint portions are improved. Also, Figure 5
In the third embodiment shown in FIG. 4, the number of parts in the joint portion is smaller than that in the second embodiment shown in FIG. 4, which also has the effect of reducing manufacturing man-hours.

Next, a fourth embodiment of the present invention will be explained using FIG. FIG. 7 is a plan view of the truck frame. In the figures, the same reference numerals as in the first embodiment indicate the same members. 10 is a CFRP installed as a joint between side beam 2 and cross beam 3
The T-shaped flat plate gusset 11 is also an L-shaped flat plate gusset. In this embodiment, as in the first to third embodiments, first, the side beam 2 and the cross beams 3 and 3' are each CF
Preform separately with RP. Next, the side beam 2 and the cross beam 3,
3' in the same manner as in the first to third embodiments, flat plate gussets 10, 11 are installed at the joint between the side beam 2 and the cross beams 3, 3' as shown in FIG. are arranged one on top of the other, fixed with a jig, and the entire bogie frame 9 is finally formed. Here, the flat plate gussets 10 and 11 are made of CFRP in which carbon fibers having higher strength than the side beams 2 and the cross beams 3, 3' are oriented across the joint boundary, and are integrally molded as a whole. As a result, in the joint portion between the side beam 2 and the cross beams 3, 3', the allowable stress of local stress generated near the joint is increased, and strength reliability is improved. Further, the flat plate gussets 10 and 11 can be easily molded in one piece compared to the plate material 4 used in the first to third embodiments, which is integrally formed on the entire surface of the bogie frame. Therefore, the manufacturing cost of the flat plate gussets 10 and 11 is reduced, and the quality is improved.

FIG. 8 shows a fifth embodiment of the present invention, which is an application of the fourth embodiment. In the figure, 12
are T-shaped and L-shaped flat plate gussets 10 shown in FIG.
11 is a long flat plate gusset that is continuous in the longitudinal direction of the bogie frame. In this embodiment, as in the first to fourth embodiments, after preforming and installing the side beam 2 and the cross beam 3, the side beam 2 and the side beam 2 and the cross beam 3 are arranged as shown in FIG. At the joint part, the flat plate gussets 12 are placed overlappingly on the flange surfaces of both beams, and fixed with a jig to attach the bogie frame 13.
The entire part is actually molded. In this embodiment, compared to the method of arranging a plurality of T- and L-shaped flat plate gussets 10 and 11 shown in FIG. 7, the number of flat plate gussets 12 is reduced, and the number of parts can be reduced. Furthermore, in the side beams 2, which are generally the main strength members of the bogie frame 13, the flat plate gussets 12 are superimposed on the upper and lower flange surfaces, eliminating surface irregularities. For this reason, in the side beam 2, the flat plate gusset 1
There is no geometric cutout caused by overlapping 2,
Strength is improved.

In the first to fifth embodiments, the side beams and the cross beams have an I-shaped cross section, but they can be manufactured in substantially the same way if they have a C-shaped cross section.

Next, a sixth embodiment of the present invention will be explained with reference to FIGS. 9 to 11. FIG. 9 is a perspective view of the bogie frame of this embodiment at an intermediate stage of manufacture, FIG. 10 is a sectional view taken along line 10-10 in FIG.
FIG. 11 is a sectional view showing the final state of the cross section shown in FIG. In the figures, the same reference numerals as in the first embodiment indicate the same members. Reference numeral 14 denotes a longitudinal member made of CFRP with a C-shaped cross section, which is installed as a part of the side beam, and 15 refers to a C member having a part corresponding to a part of the side beam and the cross beam, and in which fibers in the longitudinal direction are continuous.
It is a frame structure made of FRP with a C-shaped cross section. In this example,
The longitudinal member 14 has a C-shaped cross section and is manufactured so that the height of the web 14b matches the height of the web 15b of the frame structure 15. The frame structure 15 has a C-shaped cross-section as shown in FIGS. 10 and 11, and is formed so that portions 15e that will become part of the side beams are located on both sides of a portion 15d that will become the cross beams. Here, the web 15g of the frame structure 15 on the longitudinal member 14 side is designed so that the entire length thereof overlaps the web 14b of the longitudinal member 14 in the height direction to form a side beam.

Next, as shown in FIG. 9, the frame structure 15 is sequentially arranged in the longitudinal direction of the bogie frame while overlapping the webs 15f of the portions 15d that will become part of the cross beams. Longitudinal member 14
In this case, the webs 14b are arranged so as to overlap the webs 15g on both sides of the frame structure 15, which are arranged in plural pieces in the longitudinal direction. FIG. 10 shows, as an example, a state in which the longitudinal member 14 and the webs 14b and 15g of the frame structure 15 are overlapped, with the flange portions 14a and 15a being on the same plane at the upper and lower portions. Next, as shown in Figure 11,
Flange portions 14a, 1 of the longitudinal member 14 and the frame structure 15
After the plate material 4 is superimposed on 5a, the whole is fixed with a jig and the entire bogie frame is actually formed. Although FIG. 10 shows the parts that become the side beams of the bogie frame, the same shape is also used for the side beams. In this case, the plate material 4 is the longitudinal member 1 as in the first embodiment.
4 and the flange surfaces 14a, 15a of the frame structure 15 are integrally molded so as to overlap at once. Or the fourth
And similar to the fifth embodiment, the longitudinal member 14 and the frame structure 15
T-shaped and L-shaped flat plate gussets 10 and 11 or a long flat plate gusset 12 in which T- and L-shaped shapes are connected are arranged around the area where the cross beams overlap. Further, although the frame structure 15 shown in FIG. 9 has a continuous portion where it overlaps the web 14a of the longitudinal member 14, this portion may be formed in sections. That is, the frame structure 15 has a continuous portion forming the cross beam, and two portions in contact with the left and right longitudinal members 14.
Produce by dividing into equal parts. Thereby, in the bogie frame, the side beams are composed of the longitudinal members 14, a part of the frame structure 15 and the plate 4, and the cross beams are composed of the frame structure 15 and the plate 4. The joint between the side beam and the cross beam is
It is formed naturally in the process of combining each member to form the side beams and cross beams. That is, the L-shaped joint 5 and three-dimensional joint 8 as shown in the first to fifth embodiments are not required, and the number of parts is reduced. Therefore, the number of manufacturing steps can be reduced. In addition, in response to external loads acting on the bogie frame, the joints between the side beams and cross beams are formed without the use of special joints, so the load flows smoothly in this part, improving strength reliability. do.

Next, a seventh embodiment of the present invention will be explained with reference to FIGS. 12 to 14. Of these, FIG. 12 is a perspective view of the bogie frame of this example at an intermediate stage of manufacture, and FIG.
14 is a cross-sectional view showing the final state of the cross-section shown in FIG. 13. In the figure, 16 is a CFRP C-shaped longitudinal member disposed as part of the side beam, 17
This is a C-shaped cross-sectional frame structure made of CFRP, which has parts corresponding to part of the side beams and a cross beam part, and has continuous fibers in the longitudinal direction. In this embodiment, the longitudinal member 16 has a C-shaped cross section and is manufactured so that the height of the web 16b matches the height of the web 17b of the frame structure 17. As shown in FIG. 12, the frame structure 17 has a C-shaped cross-sectional shape, and portions 17e that become part of the side beams are located on both sides of a portion 17d that becomes the cross beam, and the web surface 17f is on the inner peripheral side. Shape it like this. Here, the frame structure 17 is arranged so that the flange parts 17g and 17h are on the same plane as the flange parts 16c and 16d of the longitudinal member 16, respectively. Next, as shown in FIG. 12, the frame structure 17 has a flange portion 1 at a portion 17d that becomes a part of the cross beam.
7i and 17i' are sequentially arranged in the longitudinal direction of the bogie frame while aligning them with each other. The longitudinal member 16 has flange portions 16c, 1
6d are disposed on both sides of the frame structure 17 in which a plurality of flanges 6d are disposed in the longitudinal direction so as to butt against the respective flanges 17g and 17h. At this time, a reinforcing material is provided and joined between the web 16b of the longitudinal member 16 and the web 17j of the cross beam portion 17d of the frame structure 17, so that the shear load is transmitted between the two beams. FIG. 13 shows, as an example, flange portions 16c, 16d, 17g, and 17h of the longitudinal member 16 and the frame structure 17.
This shows the state where the two are butted together, and the mutual flange portions 16
Make sure that c, 16d, and 17g, 17h are on the same plane.

Next, as shown in FIG. 14, the longitudinal member 1
6 and the flange portions 16c, 17g and 1 of the frame structure 17
After overlapping the plate materials 4 on 6d and 17h, the whole is fixed with a jig and the entire bogie frame is finally formed. here,
The plate material 4 is integrally molded so as to overlap the entire flange surfaces 16c, 16d, 17g, and 17h of the longitudinal member 16 and the frame structure 17 at once, as in the first embodiment. As a result, the cross sections of the side beams and cross beams of the bogie frame become box-shaped. The joint portion between the side beam and the cross beam is formed in the process of combining each member to form the side beam and the cross beam. That is, in this embodiment, as in the sixth embodiment, the L-shaped cross section and three-dimensional joint shown in the first to fifth embodiments are not necessary, and the number of parts is reduced. Therefore, the number of manufacturing steps can be reduced. Furthermore, in response to external loads acting on the bogie frame, the cross-sectional shapes of the side beams and cross beams become box-shaped, and the torsional rigidity is significantly increased compared to the bogie frame of the sixth embodiment.

Next, an eighth embodiment of the present invention will be explained with reference to FIGS. 15 to 17. Of these, FIG. 15 is a perspective view of the bogie frame of this embodiment at an intermediate stage of manufacture, and FIG.
17 is a cross-sectional view showing the final state of the cross-section shown in FIG. 16. In the figures, the same reference numerals as in the first embodiment indicate the same members. Reference numeral 18 indicates a C-shaped cross-section longitudinal member made of CFRP, which is installed as part of the side beam, and reference numeral 19 indicates a CFRP member having a portion that becomes part of the side beam and a part of the cross beam, and has continuous fibers in the longitudinal direction. It is a frame structure with a C-shaped cross section made by. Reference numeral 20 denotes an aluminum alloy web structure that becomes part of the webs of the side beams and cross beams when the bogie frame is formed. In this embodiment, the longitudinal member 18 has a C-shaped cross-section and is manufactured so that the height of the web 18b matches the height of the web 19b of the frame structure 19. The frame structure 19 has a C-shaped cross section as shown in FIG.
Shaping is performed so that portions 19e that will become part of the side beams are located on both sides of 9d. Here, the frame structure 19 has a flange portion 19
g, 19h are flange parts 18c, 18d of the longitudinal member 18
so that it is on the same surface as the As shown in FIG. 15, the web structure 20 includes a web 20a located between the longitudinal member 18 and a portion 19e of the frame structure 19 that becomes part of the side beam;
The frame structure 19 has a web 20b located between parts 19d that become part of the cross beam, and the webs 20a and 20b are joined by welding. Next, a frame structure 19 is inserted into the web structure 20 divided into the web 20a and the web 20b.
Then, the web 19b of the part 19e that will become the side beam and the web 19f of the part 19d that will become the cross beam are overlapped. Frame structure 19
This process is repeated to combine a plurality of pieces into the web structure 20. The longitudinal member 18 overlaps the web 18b with the web 20a which becomes part of the side beam in the web structure 20. Figure 16 shows
As an example, the webs 18b, 19b, and 20a of the longitudinal member 18, the frame structure 19, and the web structure 20 are shown overlapping each other. The longitudinal member 18 and the frame structure 19 forming part of the side beam are connected to the web structure 20.
It is combined by sandwiching it. At this time, the longitudinal member 18 and the frame structure 19 have flange portions 18c, 18d, and 19g,
19h should be on the same plane.

Next, as shown in FIG. 17, the longitudinal member 1
8 and the flange portions 18c and 19g of the frame structure 19 and 1
After overlapping the plate materials 4 on 8d and 19h, the entire body is fixed with a jig and the entire bogie frame is finally formed. As in the first embodiment, the plate material 4 is integrally formed so as to overlap the entire flange surfaces 18c, 19g, 18d, and 19h of the longitudinal member 18 and the frame structure 19 at once. Alternatively, similarly to the fourth embodiment, the joint portion of the longitudinal member 18 and the frame structure 19 that becomes the cross beam, that is, the web 20 on the side beam side of the web structure 20
T-shaped and L-shaped flat plate gussets 10 and 11 are arranged at the center of the joint between the web 20b and the cross beam side web 20b. Also,
Similar to the fifth embodiment, T-shaped and L-shaped gussets 10, 1
A long flat plate gusset 12 made of continuous gussets 1 is arranged. The frame structure 19 shown in FIG. 15 is entirely molded in one piece, but after being divided and molded at the top and bottom, a part 19e that becomes part of the side beam, or a part 19d that becomes part of the cross beam, the web structure is formed. 20 may be provided. In this case, the frame structure 19
This makes manufacturing and attachment to the web structure 20 easier than when the whole is integrally molded. As a result, in the bogie frame, the side beams are the longitudinal member 18, the frame structure 19, the web structure 20,
The cross beam is composed of a frame structure 19 and a part of the web structure 20. The joint portion between the side beam and the cross beam is formed in the process of combining each member to form the side beam and the cross beam. When such an external load acts on the bogie frame, the side beams cope with the load using the integrated rigidity of the longitudinal members, the frame structure, the web structure, and a portion of the plate material. The cross beam is handled by the integrated rigidity of the frame structure, web structure, and part of the plate material. At the joint between the side beam and the cross beam, the web 20 on the side beam and cross beam side of the web structure 20
Since a and 20b are welded together, the strength and reliability of the joint is improved compared to other embodiments.

Next, a ninth embodiment of the present invention will be described with reference to FIGS. 18 and 19. 18 is a sectional view corresponding to the section 16-16 in FIG. 15 in the ninth embodiment, and FIG. 19 is a view taken in the direction of arrow 19 in FIG. 18. In the figure, the first
The same reference numerals as in the embodiments indicate the same members. 21 is a longitudinal member made of CFRP with an L-shaped cross section installed as a part of the side beam; 22
23 is a frame structure with an L-shaped cross section made of CFRP, which has parts that become part of the side beams and parts of the cross beams, and has continuous fibers in the longitudinal direction, and 23 is a web structure, as shown in Figure 15. It is manufactured in the same manner as the eighth embodiment. Note that, as shown in FIG. 19, holes 24 are provided in the web structure 23 at the portions that will become webs in order to reduce the weight. In this embodiment, the longitudinal member 21 has an L-shaped cross section. The frame structure 22 has an L-shaped cross-section as shown in FIG. 18, and is shaped so that the parts that will become part of the side beams are located on both sides of the part that will become the cross beams, similar to the frame structure 19 described above. do. Next, the longitudinal member 21 and the frame structure 2
2 is superimposed on the web structure 23 so that the flanges 21a and 22a are on the same plane at the upper and lower ends of the web structure 23 in the figure, respectively, as shown in FIG. 18, and fixed with bolts and nuts 6. do. In this state, as shown in FIG. 18, the plate material 4 produced in the same manner as in the first embodiment is overlaid on the flange portions 21a and 22a of the longitudinal member 21 and the frame structure 22, and fixed with a jig to carry out the main forming. conduct. In this case, a flat plate gusset may be used instead of the plate material as in the fourth and fifth embodiments shown in FIGS. 7 and 8. In this embodiment, the cross-sectional shapes of the longitudinal member 21 and the frame structure 22 made of CFRP are L-shaped, and their production is easier than in other embodiments.

Next, FIG. 20 is a sectional view showing another embodiment of the web structure according to the present invention, that is, a tenth embodiment. In the figure, the web structure 25 is formed using an extruded aluminum alloy member having a flat surface on which the web of the longitudinal member and the frame structure are overlapped, and a hollow portion in the thickness direction. This increases the out-of-plane bending rigidity of the web structure compared to other embodiments. Moreover, the buckling load resistance of the web itself increases. Therefore, even if the height of the side beams and cross beams is increased, the bogie frame can be formed without increasing the thickness of the web or providing reinforcing materials to prevent buckling.

Next, an eleventh embodiment of the present invention will be described with reference to FIGS. 21 to 23. FIG. 21 is a perspective view of the bogie frame of this embodiment at an intermediate stage of manufacture, FIG. 22 is a cross-sectional view along line 22-22 in FIG. 21, and FIG. 23 is a cross-sectional view at line 23-23 in FIG. In the figures, the same reference numerals as in the first embodiment indicate the same members. 26 is the frame of the bogie frame of this embodiment, 27 is a C-shaped cross-section longitudinal member made of CFRP disposed as a part of the side beam, 28
is a C-shaped cross-section frame structure made of CFRP, which has parts that become part of the side beams and parts of the cross beams, and has continuous fibers in the longitudinal direction. In this embodiment, the longitudinal member 27 has a C-shaped cross section, the height of the web 27b is made to match the height of the web 28b of the frame structure 28, and the tip of the flange portion 27a is connected to the surface of the web 28b of the frame structure 28. A tip portion 27c that comes into close contact is provided. The frame structure 28 is molded in the same manner as in the sixth embodiment shown in FIG. Next, as shown in FIG. 21, the frame structure 28 is sequentially arranged in the longitudinal direction of the bogie frame while overlapping the webs 28f of the portions 28d that will become part of the cross beams. Longitudinal member 2
Reference numeral 7 denotes a frame structure 28 in which a plurality of tip portions 27c are arranged in the longitudinal direction, and the frame structure 28 is arranged so as to be overlapped with the web 28h of a portion 28g which becomes a part of the side beam. FIG. 22 shows a state in which the tip end 27c of the longitudinal member 27 and the web 28h of the frame structure 28 are overlapped, and when the plate materials 4 are overlapped at the upper and lower portions in the figure, a cross section of a side beam is obtained. FIG. 23 shows a state in which the webs 28f that form part of the cross beam in the frame structure 28 are overlapped with each other, and when the plate materials 4 are overlapped at the upper and lower portions in the figure, it becomes a cross section of the cross beam. The truck frame is formed by overlapping the plate materials 4 from the state shown in FIG. 21 as shown in FIGS. 22 and 23, and fixing the entire structure with a jig. As a result, the side beams of the bogie frame have a box-shaped cross-sectional structure, and the torsional rigidity of the side beams is increased compared to the first to eleventh embodiments. Therefore, the overall rigidity of the bogie frame is increased, the strength and reliability are improved, and the overall weight can be reduced.

Next, a twelfth embodiment of the present invention will be described with reference to FIGS. 24 to 26. FIG. 24 is a perspective view of the bogie frame of this embodiment at an intermediate stage of manufacture, FIG. 25 is a sectional view taken along the line 25-25 in FIG. 24, and FIG. 26 is a sectional view taken along the line 26-26 in FIG. 24. In the figures, the same reference numerals as in the first embodiment indicate the same members. 29 is the frame of the bogie frame of this example, 30 is a C-shaped cross-section longitudinal member made of CFRP disposed as a part of the side beam, 31
32 is a frame structure made of CFRP with a C-shaped cross section, which has parts that become part of the side beam and part of the cross beam, and has continuous fibers in the longitudinal direction. This is an aluminum alloy web structure that becomes part of the web. In this example, the longitudinal member 30 is manufactured in the same manner as in the eleventh example, and the frame structure 31 and the web structure 32 are manufactured in the same manner as in the eighth example. Next, the flange portion 3 of the longitudinal member 30
The tip portion 30c located at the end of 0a overlaps the side surface of the web 32a arranged in the longitudinal direction of the web structure 32, and overlaps the web 32b arranged in the width direction of the web structure 32 in the longitudinal direction as shown in FIG. The web 32a placed in
Each web 3 of the frame structure 31 is surrounded by
Arrange 1f and 31g so that they overlap and complete the frame 29 of the bogie frame.
form. FIG. 25 shows a state in which the tip end 30c of the longitudinal member 30, the web 32a of the web structure 32, and the web 31g of the frame structure 31 overlap. It becomes the cross section of Figure 2
6 shows a state in which the webs 31f of the frame structure 31 overlap each other, and when the plate materials 4 are overlapped at the upper and lower portions in the figure, it becomes a cross section of a cross beam. The truck frame is formed by overlapping the plate materials 4 from the state shown in FIG. 24 as shown in FIGS. 25 and 26, and fixing the entire structure with a jig. As a result, the side beams of the bogie frame have a box-shaped cross-sectional structure, and the joints between the side beams and the cross beams are made of CFRP longitudinal members, the frame structure, and the web structure 3.
The structure is a combination of 2. For this reason, the bogie frame is
Compared to the first embodiment, the rigidity and strength reliability of the joint are further improved.

Next, a thirteenth embodiment of the present invention will be described with reference to FIGS. 27 to 29. FIG. 27 is a perspective view of the bogie frame of this embodiment at an intermediate stage of manufacture, FIG. 28 is a sectional view taken along the line 28-28 in FIG. 27, and FIG. 29 is a sectional view taken along the line 29-29 in FIG. In the figures, the same reference numerals as in the first embodiment indicate the same members. 33 is the frame of the bogie frame of this example, 34 is a C-shaped cross-section longitudinal member made of CFRP disposed as a part of the side beam, 35
36 is a frame structure made of CFRP with a C-shaped cross section, which has parts that become part of the side beam and a part of the cross beam, and has continuous fibers in the longitudinal direction. 37 is a membrane plate integrally formed with the frame structure 35 to form a box-shaped cross section;
8 is a bolt/nut or a bolt for caulking connection. In this embodiment, the longitudinal member 34 is the 12th one shown in FIG.
In this example, the web structure 36 is manufactured in the same manner as in the eighth example shown in FIG. 15. The frame structure 35 is shown in FIG.
Alternatively, as shown in FIG. 29, the cross-sectional shape is C-shaped,
The flange portions 35a and 35b each form a web structure 36.
and is formed so as to overlap with the membrane plate 37.

Next, the distal end portion 34c located at the end of the flange portion 34a of the longitudinal member 34 is overlapped with the side surface of the web 36a disposed in the longitudinal direction with the web structure 36, and as shown in FIG.
As shown in 7, each flange portion 35a of the frame structure 35 overlaps the upper and lower ends of the space surrounded by the web 36b arranged in the width direction and the web 36a arranged in the longitudinal direction of the web structure 36. , and are connected using a combination of adhesive and bolts and nuts or bolts 38 for caulking. FIG. 28 shows the tip 34c of the longitudinal member 34, the web 36a of the web structure 36, and the flange 35 of the frame structure 35.
This figure shows a state in which the membrane plate 37 and the membrane plate 37 are overlapped, and when the plate materials 4 are overlapped at the upper and lower parts of the figure, it becomes a cross section of the side beam. FIG. 29 shows a state in which the web 36b of the web structure 36, the flange part 35a of the frame structure 35, and the membrane plate 37 are overlapped, and when the plate materials 4 are overlapped at the upper and lower parts of the figure, the cross section of the cross beam is Become. The bogie frame is changed from the state shown in Fig. 27 to the state shown in Fig. 2.
As shown in FIGS. 8 and 29, the plate materials 4 are stacked one on top of the other, and the whole is fixed with a jig for final forming. As a result, the side beams and cross beams of the bogie frame all have a box-shaped cross-sectional structure, and the joints of the side beams and cross beams are made of CFRP longitudinal member 34 and frame structure 35.
The structure is a combination of the web structure 36 and the web structure 36. Therefore, the rigidity and strength reliability of the entire bogie frame and the joints are improved compared to the twelfth embodiment.

Next, a fourteenth embodiment of the present invention will be described with reference to FIGS. 30 to 33. 30 is a perspective view of the bogie frame of this embodiment, FIG. 31 is a perspective view of a joint used in this embodiment, FIG. 32 is a sectional view of section 32-32 in FIG. 30, and FIG. 33 is a sectional view of section 33-33 of FIG. 30. FIG. In the figure, 39 is the bogie frame of this embodiment, 40 and 41 are CFRP side beams and cross beams with a box-shaped cross section, and 42 is a CFRP three-dimensional joint installed at the joint of the side beams 40 and 41. be. In this embodiment, first, the side beams 40, the cross beams 41, and the three-dimensional joints 42 are individually molded. Next, after confirming the positional relationship of the side beam 40, the cross beam 41, and the three-dimensional joint 42, the three-dimensional joint 42 is assembled to the end of the cross beam 41, fixed with a jig, and joined. FIG. 32 shows its cross-sectional state, and three-dimensional joints 42 are assembled and joined from the left and right sides of the cross beam 41. Next, as shown in FIG. 33, the three-dimensional joints 42 are assembled as shown on the upper and lower surfaces 40a and 40b of the side beam 40 and the side surface 40c on the side beam side, fixed with a jig, and then joined. As a result, all bogie frames are made of CFRP.
It has a box-shaped cross-sectional structure. Therefore, the bogie frame of this embodiment is advantageous in terms of weight reduction compared to the thirteenth embodiment.

Incidentally, in each of the above embodiments, an example in which a carbon fiber reinforced resin composite material was used as the fiber reinforced resin composite material was explained, but the present invention is not limited to this, and various materials currently being developed are used. A similar effect can be achieved using a composite material made of fiber materials.

[0031]

According to the present invention, in a frame structure constructed by combining side beams and cross beams made of fiber-reinforced resin composite material, the entire bogie frame including the joints between the side beams and cross beams can be manufactured easily. This has the effect of ensuring sufficient strength and reliability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a truck frame to which the present invention is applied.

FIG. 2 is an enlarged perspective view of part A in FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a sectional view of a side beam of a bogie frame according to a second embodiment.

FIG. 5 is a sectional view of a side beam of a bogie frame according to a third embodiment.

FIG. 6 is a perspective view of the three-dimensional joint used in the third embodiment.

FIG. 7 is a plan view of the truck frame of the fourth embodiment.

FIG. 8 is a perspective view of the truck frame of the fifth embodiment.

FIG. 9 is a perspective view of the truck frame of the sixth embodiment at an intermediate stage of manufacture.

FIG. 10 is a sectional view taken along line 10-10 in FIG. 9;

11 is a cross-sectional view showing the final state of the cross-sectional portion shown in FIG. 10; FIG.

FIG. 12 is a perspective view of the truck frame of the seventh embodiment at an intermediate stage of manufacture.

FIG. 13 is a sectional view taken along line 13-13 in FIG. 12;

14 is a cross-sectional view showing the final state of the cross-sectional portion shown in FIG. 13; FIG.

FIG. 15 is a perspective view of the bogie frame of the eighth embodiment at an intermediate stage of manufacture.

FIG. 16 is a sectional view taken along line 16-16 in FIG. 15;

17 is a cross-sectional view showing the final state of the cross-sectional portion shown in FIG. 16; FIG.

FIG. 18 is a sectional view of the side beam of the bogie frame of the ninth embodiment.

19 is a view taken in the direction of arrow 19 in FIG. 18. FIG.

FIG. 20 is a sectional view showing another example of the web structure in the eighth and ninth embodiments.

FIG. 21 is a perspective view of the truck frame of the eleventh embodiment at an intermediate stage of manufacture.

FIG. 22 is a sectional view taken along line 22-22 in FIG. 21;

FIG. 23 is a sectional view taken along line 23-23 in FIG. 21;

FIG. 24 is a perspective view of the truck frame of the twelfth embodiment at an intermediate stage of manufacture.

FIG. 25 is a sectional view taken along line 25-25 in FIG. 24;

FIG. 26 is a sectional view taken along line 26-26 in FIG. 24;

FIG. 27 is a perspective view of the truck frame of the thirteenth embodiment at an intermediate stage of manufacture.

FIG. 28 is a sectional view taken along line 28-28 in FIG. 27;

FIG. 29 is a sectional view taken along line 29-29 in FIG. 27;

FIG. 30 is a perspective view of the truck frame of the fourteenth embodiment.

FIG. 31 is a perspective view of a three-dimensional joint used in the fourteenth embodiment.

FIG. 32 is a sectional view taken along line 32-32 in FIG. 30;

33 is a sectional view taken along line 33-33 in FIG. 30; FIG.

[Explanation of symbols]

1, 9, 13, 39...Bogie frame, 2...Side beam, 3...Horizontal beam, 4
...Plate material, 5...L-shaped joint, 6,38...Bolt/nut,
7... Flat plate gusset joint, 8... Three-dimensional joint, 10... T-shaped flat plate gusset, 11... L-shaped flat plate gusset, 12... Long flat plate gusset, 14, 16, 18, 27, 30, 34... C
Longitudinal members of shaped cross section, 15, 17, 19, 28, 31, 3
5...Frame structure with C-shaped cross section, 20, 23, 25, 32, 3
6... Web structure, 21... L-shaped cross-section longitudinal member, 22...
Frame structure with L-shaped cross section, 24... Hole in web, 26, 29,
33... Frame of bogie frame, 37... Membrane plate, 40... Side beam with box-shaped cross section, 41... Cross beam with box-shaped cross section, 42... Three-dimensional joint.

Claims (12)

[Claims] Claim 1: One beam and another beam arranged on the side surface of the one beam and joined in the width direction of the one beam, and crossing the joining boundary between the one beam and the other beam. 1. A frame structure using a fiber-reinforced resin composite material, comprising a fiber-reinforced resin composite plate material having a fiber layer and superimposed on and joined to each of the beams to join them together. 2. A frame structure using a fiber-reinforced resin composite material according to claim 1, wherein at least one of the beams to be joined is a beam made of a fiber-reinforced resin composite material. Frame structure using composite materials. 3. A frame structure using a fiber-reinforced resin composite material according to claim 1 or 2, wherein the plate material is integrally molded to a size corresponding to a portion near the joint of each beam to be joined. A frame structure using a fiber-reinforced resin composite material. 4. A frame structure using a fiber-reinforced resin composite material according to claim 1 or 2, wherein the plates made of fiber-reinforced resin composite material to be overlapped on the upper and lower surfaces of the beam are arranged so that the plate members overlap the upper and lower surfaces of the beam. A frame structure using a fiber-reinforced resin composite material, characterized in that it is integrally molded so as to overlap the entire surface of the frame. 5. A frame structure using a fiber-reinforced resin composite material according to claim 1 or 2, wherein each beam comprises a flange portion formed on an upper surface and a lower surface, respectively, and a web that integrally connects the flange portion. 1. A frame structure using a fiber-reinforced resin composite material, characterized in that the beams are joined by overlapping the plate materials on the corresponding flange portions of each beam. 6. A frame structure using a fiber-reinforced resin composite material according to claim 5, wherein the plate material is integrally formed so as to overlap the entire surface of the flange portion of each beam to be joined. A frame structure using fiber-reinforced resin composite material. 7. A frame structure using a fiber-reinforced resin composite material according to claim 5, characterized in that corresponding webs of each beam are connected using a joint. Skeleton structure. 8. A frame structure using a fiber-reinforced resin composite material according to claim 5, wherein a three-dimensional joint consisting of a flange portion and a web is provided inside each beam flange portion to join each beam to be joined. A frame structure using a fiber-reinforced resin composite material, characterized in that the beams are arranged across boundaries, and each beam is joined by overlapping each beam with a three-dimensional joint. 9. A frame structure using a fiber-reinforced resin composite material according to claim 1, 3, 4, or 5, wherein the plate material is made of a material with higher strength than the beam. A frame structure using fiber-reinforced resin composite material. 10. One beam made of a metal material, another beam made of a metal material arranged in the width direction of the one beam and joined to the side surface of the one beam, and the one beam made of a metal material. A fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced fiber-reinforced device, comprising: Frame structure using resin composite material. 11. A framework made of fiber-reinforced resin composite material that integrally forms the periphery of the opening of the structure; a longitudinal member installed on the side surface of a plurality of arranged frameworks to join them together; A frame structure using a fiber-reinforced resin composite material, comprising: and a plate member which is placed overlappingly on the upper and lower surfaces of the longitudinal member and joins the respective members. 12. A frame structure using a fiber-reinforced resin composite material according to claim 11, wherein the frame and the longitudinal members have a cross-sectional shape having flanges on the upper and lower surfaces and connecting them with a web. A frame structure using fiber-reinforced resin composite material.