摘要:
The invention relates to a sandwich panel, comprising: —a core, comprising: —a plurality of zigzag-shaped first spacers extending in a first longitudinal direction, each first spacer comprising at each corner thereof a first loop; —a plurality of zigzag-shaped second spacers extending in the first longitudinal direction, each second spacer comprising at each corner thereof a second loop, each second loop having outer dimensions that are smaller than the inner dimensions of each first loop, —wherein the second loops of each second spacer extend through the first loops of an adjacent first spacer; —wherein the openings defined by the second loops of successive second spacers are registered in rows extending in a second longitudinal direction, which second longitudinal direction extends under an angle of at least 20° with respect to the first longitudinal direction; and—wherein the first spacers and the second spacers define a second zigzag-shape in the second longitudinal direction; —two skin layers arranged on opposite sides of the core, wherein each skin layer comprises a plurality of openings through which the second loops extend; —a plurality of rods, each rod extending through the openings of the second loops of each row at the outer surface of each skin layer such that each rod locks the second loops in the first loops with respect to the skin layer. The invention further relates to a method of building such a sandwich panel, a core of such a sandwich panel, and a building built of a plurality of such sandwich panels.
摘要:
A series of individual modular panels are combined to create a completed structure. Panels for floor, wall and roof are joined at common bearing points. The roof frame is a combination of pyramid and hip shaped units connected to create the structural framework for standard and multi-pitched pyramid and hip-type roofs. The structural framework acts as a single unit and creates both the exterior and interior shape in one assembly. The lower horizontal carriage of the roofs structural framework allows for easy installation of ceiling panels. The upper exterior diagonal and horizontal framework allows for easily installed weather tight roof panels. PV solar panels can be integrated into the roof panels, eliminating the need for additional racking. Lightweight tents as well as heavy commercial applications can benefit from this roof system. Electric supply lines are accommodated for with hollow channels integrated into the structural assembly.
摘要:
A first tube (1) is axially slitted (2) in order to be elastically compressible. The end portion of the first tube (1) has exterior convexly curved engagement formations (3) on the tube tubs formed by the slit (2). The tube tubs (11) can be elastically compressed in order to be introduced through a fitting mantle opening (8) in a second tube element (7). The opening (8) has a width, which is less than the inner diameter of the second tube element (7), and thereby defines internal engagement formations which cooperate with the external engagement formations (3) on the first tube element (1). The tube elements (1, 7) can simply be connected and detached by elastic compression of the tube tubs (11) and axial displacement of the first tube element (1).
摘要:
To produce a pultrusion which can be machined without undue strength loss bidirectional woven fiber fabric is modified to be pultrudable into a high shear strength composite member. In a preferred form of the invention the fabric is pleated in the pultrusion process to create an endless wall of stacked switchback pleated layers which defines a box beam wall in one example, and the shaft of a bolt in another. Products produced by this process have improved isotonic strength qualities over currently produced pultrusions, which are limited to unidirectional fibers, continuous fiber mats, or alternating layers of non-woven 0.degree. and 90.degree. cloth and do not have the shear strength inherent in the pleated configuration.
摘要:
A high voltage electrical transmission line tower is constructed virtually completely from insulated pultruded composites, enabling the closer spacing of conductors and the creation of a smaller tower structure and weighing half or less the weight of a steel tower with the same power transmitting capabilities.
摘要:
An interlocking joint uses an interlocking mounting bracket to permit the easy incorporation of diagonal braces on the structure. The bracket is primarily intended for use with composite beams that cannot be effectively bolted, nailed, or welded together.
摘要:
A deployable three dimensional structure is provided formed from at least three circumferential scissors like elements joined together and at least three radial scissors like elements joined together. The scissors like elements are formed from two rods joined to each other at a pivot. The structure is foldable into a closed compact state and deployable into an open erect state.
摘要:
A truss structure includes a first truss element having, a foldable frame obtained by assembling a plurality of beam members into a cube, foldable diagonal beam members located on diagonals of two opposing planes of the frame, respectively, and telescopic diagonal beam members located on diagonals of four planes other than the two planes of the frame, respectively, a second truss element having, a foldable frame obtained by assembling a plurality of beam members into a cube, foldable diagonal beam members located on diagonals of two opposing planes of the frame, respectively, and telescopic diagonal beam members located on diagonals of three planes other than the two planes of the frame, respectively, a third truss element having, a foldable frame obtained by assembling a plurality of beam members into a cube, and a telescopic diagonal beam member located on a diagonal connecting farthest node portions of the frame, and an adjusting unit for adjusting the length of each telescopic diagonal beam member.
摘要:
A coupling wherein a spherical or ring-shaped female coupling member has sockets for pins at the ends of rod-shaped male coupling members. Each pin has a conical displacing portion in front of a cylindrical peripheral surface which is formed with a pair of recesses, and the female coupling member contains a pair of movable retaining elements for each socket and springs, rubber pads or like parts which bias the retaining elements into the recesses of a pin in the respective socket. The conical displacing portion serves to spread the retaining elements apart during introduction of the pin into a selected socket, and the pin is thereupon secured in inserted positoin by an internally threaded sleeve which surrounds the end of the rod and can be moved into abutment with the external surface of the female coupling member in order to urge undercut portion of surfaces in the recesses of the inserted pin against the respective retaining elements. The pin can be extracted from its socket upon retraction of the sleeve and rotation of the rod-shaped coupling member relative to the female coupling member so that the peripheral surface of the pin spreads the respective retaining elements apart and dislodges them from the recesses.
摘要:
A support stand is formed from three orthogonally oriented intersecting slat pairs, with the joints at this intersection and also spaced along the support stand being of a special interlocking construction which creates a quite rigid joint in all dimensions of possible movement without the use of any fasteners or adhesive. Although the possible manifestations of products using the basic stand construction are quite varied, the illustrated embodiments include a support rack or "tree", a table, and a lamp.