JP2006307601A - Compound beam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensively manufacturable compound beam for manufacturing many kinds of products different in a shape with a simple structure. <P>SOLUTION: This compound beam is formed by integrally joining vertically divided upper divided beam material 1 and lower divided beam material 2 via a joint member 3, and is integrally joined by fitting the joint member to the inside of a fitting port 8 formed of an opening groove 6 by joining a lower end surface of the upper divided beam material and an upper end surface of the lower divided beam material by respectively forming a downwardly opening opening groove 6 and an upwardly opening opening groove 6 in a lower part of the upper divided beam material 1 and an upper part of the lower divided beam material 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a composite beam in which an upper divided beam material and a lower divided beam material which are divided vertically are integrally coupled through a joint member.

  In general, a beam having an I-shaped cross section is manufactured by an extrusion process using an extruder. However, a large-sized extruder is required if the cross-sectional shape is large or the strength is high. Since a large extruder is expensive, in the absence of such an extruder, a plurality of members can be combined to produce an integral composite beam.

As such a composite beam, for example, an oblique material intersecting between upper and lower I-shaped beams is arranged and joined together (see Patent Document 1), or two thin beam materials are joined by caulking. One that has been integrated to increase the strength (see Patent Document 2) is known. Also known is a small I-shaped beam joined up and down and joined together by MIG welding, FSW or solid structure rivets.
JP 2000-328653 A JP 2002-4495 A

  However, since these composite beams are used to join a plurality of members by welding, caulking, riveting (stopping many at a small interval), etc., the work is very troublesome and manufactured by a large extruder. Compared to products, the strength is not inferior, but it was not able to gain much advantage in terms of cost competitiveness.

  An object of the present invention is to solve the above problems and to provide a composite beam that can be manufactured at a low cost with a simple structure and that can manufacture various types of products having different shapes.

  The invention according to claim 1 is a composite beam in which an upper divided beam material and a lower divided beam material, which are divided vertically, are integrally coupled via a joint member, and the lower and lower divided parts of the upper divided beam material are combined. An opening groove that opens downward and an opening groove that opens upward are formed in the upper part of the beam material, and the lower end surface of the upper divided beam material and the upper end surface of the lower divided beam material are joined together by the two opening grooves. The above-mentioned joint member is fitted into the inside of the formed fitting port and is integrally coupled.

  The invention according to claim 2 is characterized in that the opening groove is formed in a dovetail shape.

  The invention according to claim 3 is characterized in that concave and convex portions that mesh with each other are formed on the lower end surface of the upper divided beam material and the upper end surface of the lower divided beam material.

  The invention according to claim 4 is characterized in that the upper divided beam material and the lower divided beam material are joined via a vibration isolating material.

  The invention according to claim 5 is a composite beam in which an upper divided beam material, an intermediate member, and a lower divided beam material, which are divided vertically, are integrally coupled via a joint member, the lower part of the upper divided beam material Opening grooves are respectively formed at both ends of the intermediate member and the upper part of the lower divided beam material, and the lower groove of the upper divided beam material, both ends of the intermediate member and the upper part of the lower divided beam material are joined to form the opening groove. In addition, the joint member is fitted into each fitting port and integrally joined.

  The invention according to claim 6 is characterized in that the intermediate member is formed in a cross shape, and the same opening groove as the opening groove in the upper and lower ends is formed in the left and right ends thereof.

  According to the first aspect of the present invention, the upper divided beam material, the lower divided beam material, and the joint member are integrally coupled. Even if the divided beam material is extruded by a relatively small extruder, A doubled composite beam can be constructed. Therefore, even a factory equipped with a small extruder can provide a large beam to the market.

  Further, since the composite beam is composed of an upper divided beam material and a lower divided beam material divided in the load direction, only a load in the vertical direction is mainly applied to the joint portion. And since the hollow part is formed in the center of a joint part, the cross-sectional area of the joint part containing a joint member is large. For this reason, the strength of the joint part itself is high, and it is difficult to be deformed even if a force from the side as well as the top and bottom is applied. Furthermore, the material cost can be saved, and the energy and man-hours for forming the uneven portion can be reduced. Therefore, it is possible to provide a beam having high strength and load resistance as a whole.

  According to the invention which concerns on Claim 2, since the said opening groove | channel is formed in the dovetail shape, when a joint member fits, it can prevent effectively that a joint member escapes.

  According to the invention of claim 3, since the concavo-convex portions are meshed with the joint portions of the upper and lower split beam materials, bending deformation is prevented when a load is applied, and the bending stress is strong and high. The integral strength can be maintained.

  According to the fourth aspect of the present invention, since the vibration isolating material is interposed between the upper and lower split beam members, a slight shift and a slight shift are generated at the joint between the upper and lower split beam members. It is possible to efficiently absorb sticking and vibration.

  According to the invention which concerns on Claim 5, a large sized composite beam can be obtained with the magnitude | size of an intermediate member. Further, by forming the opening grooves on the left and right of the intermediate member, the divided beam materials having the same configuration as the upper and lower divided beam materials can be connected, and a more complex composite beam can be manufactured.

  According to the invention which concerns on Claim 6, a cross-shaped composite beam can be manufactured using the opening groove | channel of the left-right edge part of an intermediate member.

  In FIG. 1, symbol A indicates an embodiment of a composite beam, and this composite beam A is formed by integrating an upper divided beam material 1 and a lower divided beam material 2 which are divided vertically through a joint member 3. Each member is an extruded material made of aluminum or an alloy thereof.

  As shown in FIG. 2, the upper split beam material 1 is formed by forming an upper horizontal portion 4 and a double web plate 5 suspended from the center portion in a T shape, and is slightly smaller than the lower end of the web plate 5. The upper part is connected by a connecting part, and a hollow part 10 is formed inside. An opening groove 6 that opens downward is formed in the lower portion of the connecting portion. Further, a continuous serrated uneven portion 7 is formed on the lower end surface of the web plate 5 (lower end surface of the upper divided beam member 1).

  The lower split beam material 2 is formed by forming a lower horizontal portion 4 and a double web plate 5 standing from the center portion in a T shape, and the lower portion of the web plate 5 is connected to the inner side by a connecting portion. The hollow part 10 is formed in the. An opening groove 6 that opens upward is formed in the upper portion of the connecting portion. Further, a continuous sawtooth uneven portion 7 is formed on the upper end surface of the web plate 5 (the upper end surface of the upper divided beam member 1). These concavo-convex portions 7 have a shape that meshes with the concavo-convex portions 7 of the upper divided beam material 1.

  The joint member 3 is a member having the same length as the upper and lower split beam members, and is formed in a shape and size that can be fitted into the shape of the fitting port 8 formed by facing the two opening grooves 6 up and down. ing.

  Next, when the upper and lower split beam members 1 and 2 are joined together by the joint member 3, the lower end surface of the upper split beam member 1 and the upper end surface of the lower split beam member 2 as shown in FIG. Are joined by engaging the concavo-convex portion 7. At this time, it is preferable that the upper divided beam material 1 and the lower divided beam material 2 are joined via a vibration isolator 9 (see FIG. 2). The joint between the upper and lower divided beam members 1 and 2 is stabilized by the meshing. And the fitting port 8 closed by the direction of the opening groove | channel 6 of both upper and lower split beam material is formed. The joint member is fitted into the inside of the fitting port 8 and coupled together. Thereby, the composite beam shown in FIG. 1 is completed.

  The vibration isolator 9 is a tape-like soft material having the same width as the concavo-convex portion 7 and is sandwiched between the upper and lower concavo-convex portions 7 so as to perform buffering, rattling prevention, vibration absorption, and the like.

  The composite beam A is obtained by integrally combining the upper divided beam material 1, the lower divided beam material 2, and the joint member 3, and even if it is a divided beam material extruded by a relatively small extruder, the 2 A doubled composite beam can be constructed. Therefore, even a factory equipped with a small extruder can provide a large beam to the market.

  In addition, since the upper split beam material 1 and the lower split beam material 2 have the same shape, only one molding die is required. Further, since the flange portion is also the same on the left and right, the joint member is also the same on the left and right, and can be manufactured from one mold.

  Further, since the composite beam A is composed of the upper divided beam material 1 and the lower divided beam material 2 divided in the load direction, a load in the longitudinal direction is mainly applied to the joint portion. And since the said joint member is fitted inside the fitting port 8 formed in the center of a joint part, the cross-sectional area of the joint part containing the joint member 3 is large. For this reason, the strength of the joint part itself is high, and it is difficult to be deformed even if a force from the side as well as the top and bottom is applied. Therefore, it is possible to provide a beam having high strength and load resistance as a whole.

  Moreover, since the concavo-convex portion 7 meshes with the joint between the upper and lower split beam members 1 and 2, bending deformation is prevented when a load is applied, and it is resistant to bending stress and maintains high integrated strength. be able to.

  In addition, the uneven | corrugated | grooved part 7 of the lower end surface of both the upper and lower split beam materials 1 and 2 should just be a shape which meshes | engages mutually, and is not limited to the shape shown by FIG. 2, FIG. For example, it may be a square as shown in FIG. 4A, a waveform as shown in FIG. 4B, or an inverted trapezoid as shown in FIG. What is necessary is just to form these uneven | corrugated | grooved parts 7 by the coining process and press process by a gearwheel.

  Further, as shown in FIG. 5, the upper and lower divided beam members 1 and 2 may be combined with the web plate 5 as a single plate configuration.

  The flange portion 6 on each of the left and right sides may have a shape that allows the joint member 3 to come out when fitted. For example, the upper and lower split beam members 1 and 2 of the composite beam B shown in FIG. 6A have a U-shaped cross section, and the upper split beam member 1 is bent downward and the lower split beam member 2 is bent upward. ing. In the opening groove 6 having such a cross-sectional shape, since the fitting port 8 at the time of joining is a square, the joint member 3 is also a square, and there is a possibility that the fitting member 8 is pulled out in the vertical direction at the time of fitting. For this reason, the joint member 3 may be fixed to the upper and lower split beam members 1 and 2 by fixing means 11 such as bolts, nuts, and rivets. FIG. 6B and FIG. 6C show another embodiment, which is provided with a protrusion 16 that fits and fixes the joint member 3 to either one of the upper and lower divided beams 1 and 2.

  Next, the overall shape of the composite beam is not limited to an I-shape having double web plates 5. For example, as in the composite beam C shown in FIG. 7, the U-shaped split beam materials 1a and 1b and the split beam materials 2a and 2b, which are jointed in the same manner as described above at the upper and lower portions, are joined up and down on the left and right. Thus, it can be considered that the structure is integrally coupled via the joint member 3.

  Further, the composite beam is not limited to one that is jointed at one place. For example, as shown in the composite beam D shown in FIG. 8, the upper and lower divided beam members 1 and 2 may be bent in a U shape, and both ends thereof may be integrally coupled via the joint member 3. . Since the stress-bearing portion is doubled by the plurality of joint portions, it is possible to provide a high-intensity beam.

  Further, in the composite beam, the upper and lower divided beam members 1 and 2 may not have the same shape. For example, as shown in the composite beam E shown in FIG. 9, the upper divided beam material 1 in which the lower part of the web plate 5 is bifurcated and the U-shaped lower divided beam material 2 are integrally coupled via the joint member 3. It may be what you did.

  Further, the composite beam is not limited to one composed only of split beam materials that are split up and down. For example, as in the composite beam F shown in FIG. 10, opening grooves 6 are formed in the lower part of the upper divided beam material 1, both ends of the intermediate member 12, and the upper part of the lower divided beam material 2, respectively. 1. A structure in which the lower part of 1 and both ends of the intermediate member 12 and the upper part of the lower split beam member 2 are joined and the joint member 3 is fitted into each fitting port 8 formed by the opening groove 6 to be integrally coupled. It may be. There may be a plurality of intermediate members 12 as necessary.

  Further, as in the composite beam F shown in FIG. 11, the intermediate member 13 is formed in a cross shape, and the same opening groove 6 as the upper and lower ends is formed on the left and right, and the same structure as the upper and lower divided beam members 1 and 2 is formed in this opening groove 6. The end portions of the left and right split beam members 14 and 15 are joined together, and the joint member 3 is fitted into the fitting port 8 formed by the opening groove 6 of both, thereby producing a cross-shaped composite beam as a whole. May be.

  As described above, according to the composite beam having the above-described structure, since it has a simple structure and does not require troublesome operations such as welding and caulking for joining the divided beam members, it can be manufactured at a low cost. In addition, it is possible to manufacture many types of products with different shapes.

  The present invention can be used as a long span parking lot roof, bus shelter, curtain wall, etc., as a structural material for large ornamental greenhouses, as a beam material for large structures such as bridges, building top lights, arches, etc. it can.

It is a front view which shows one Embodiment of a composite beam. The inside of the circle is a cross-sectional view of the main part when the joint member is not fitted. It is a disassembled perspective view of the said composite beam. It is a perspective view which shows an assembly state same as the above. (A) (b) (c) is a partial side view which shows each example of the uneven | corrugated | grooved part provided in a junction part same as the above. It is a composite beam front view in which the web plate is a single plate configuration. (A) It is a composite beam front view of the example of another fitting groove. (B) (c) is a front view of the other example of a fitting groove part. It is a front view which shows the other example of the other form of a composite beam. It is a front view of the composite beam which has two joint parts. It is a front view of the composite beam from which upper and lower split beam materials differ. It is a front view of the composite beam which interposed the intermediate member between the upper and lower split beam materials. It is a front view of the composite beam which shows the example in case the said intermediate member is cross shape.

Explanation of symbols

A to I Composite beam 1 Upper split beam material 2 Lower split beam material 3 Joint member 6 Opening groove 8 Fitting port

Claims (6)

It is a composite beam in which an upper divided beam material and a lower divided beam material which are divided vertically are integrally coupled through a joint member,
In the lower part of the upper split beam material and the upper part of the lower split beam material, an opening groove opening downward and an opening groove opening upward are formed, respectively.
A composite characterized by joining the lower end surface of the upper divided beam member and the upper end surface of the lower divided beam member together and fitting the joint member into the fitting opening formed by the opening groove. beam.   The composite beam according to claim 1, wherein the opening groove is formed in a dovetail shape.   2. The composite beam according to claim 1, wherein concave and convex portions that mesh with each other are formed on a lower end surface of the upper divided beam material and an upper end surface of the lower divided beam material.   2. The composite beam according to claim 1, wherein the upper divided beam material and the lower divided beam material are joined together via a vibration isolating material. It is a composite beam in which an upper divided beam material, an intermediate member, and a lower divided beam material, which are divided vertically, are integrally coupled via a joint member,
Opening grooves are formed in the lower part of the upper split beam material, both ends of the intermediate member, and the upper part of the lower split beam material, respectively, and the lower part of the upper split beam material, both ends of the intermediate member, and the upper part of the lower split beam material are joined. Then, the composite beam is characterized in that the joint member is fitted into the inside of each fitting opening formed by the opening groove and coupled together. The composite beam according to claim 6, wherein the intermediate member is formed in a cross shape, and the same opening groove as the opening groove in the upper and lower ends is formed in the left and right ends thereof.

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