Truss Elements and Space Truss Diagonal Member Manufacturing Method

Abstract

There is provided a truss element in which space truss diagonal members can be easily integrally formed by being drawn in a predetermined direction. This truss element is formed in a corrugated shape with mountain portions 1 a and valley portions 2 in left and right directions alternately and cut portions 4 a , each which is perpendicular to a ridge line 3 of the mountain portion 1 and leaves a bottom of the valley portion uncut, and cut portions 4 b , each which is perpendicular to a bottom line 5 of the valley and leaves a peak of the mountain portion uncut, are formed alternately with spaces in a front and back directions.

1 . A truss element being formed in a corrugated shape with mountain portions and valley portions in left and right directions alternately, wherein cut portions, each which is perpendicular to a ridge line of the mountain portion and leaves a bottom of the valley portion uncut, and cut portions, each which is perpendicular to a bottom line of the valley and leaves a peak of the mountain portion uncut, are formed alternately with spaces in front and back directions. 
   
   
       2 . A truss element being formed in a cylindrical shape with mountain portions and valley portions alternately in a circumferential direction, wherein cut portions, each which is perpendicular to a ridge line of the mountain portion and leaves a bottom of the valley portion uncut, and cut portions, each which is perpendicular to a bottom line of the valley and leaves a peak of the mountain portion uncut, are formed alternately with spaces in front and back directions. 
   
   
       3 . A truss element being cylindrically formed with a polygonal cross section, wherein cut portions are formed on a peripheral wall and a ridge line along front and back directions, respectively, and the cut portions are arranged in a staggered manner such that the cut portions formed on the peripheral wall and the cut portions formed on the ridge line are shifted one another 
   
   
       4 . A truss element having upper and lower walls and a plurality of vertical walls arranged at regular intervals in left and right directions, wherein cut portions are intermittently formed on the upper and lower walls along front and back directions every between the vertical walls, the cut portions are arranged in a staggered manner such that those, which are adjacent to each other in the left and right directions, are shifted one another in the front and back directions, and the cut portions are intermittently formed along the front and back directions on the vertical walls to be made to match with either ones of the cut portions formed on the upper and lower walls to be shifted one another in the length and the position in the front and back directions. 
   
   
       5 . A truss element having upper and lower walls and a plurality of vertical walls arranged at regular intervals in left and right directions, wherein cut portions are intermittently formed on the upper and lower walls along front and back directions every between the vertical walls, the cut portions are arranged in a staggered manner such that those, which are adjacent to each other in the left and right directions, are shifted one another in the front and back directions, a portion where the cut portions are intermittently formed along the front and back directions on the vertical walls to be made to match with either ones of the cut portions formed on the upper and lower walls to be shifted one another in the length and the position in the front and back directions, and a portion where either only one of the upper and lower walls is formed, the cut portions are intermittently formed on the upper wall or lower wall along the front and back directions to have spaces in the left and right directions, and the cut portions are arranged in a staggered manner such that those, which are adjacent to each other in the left and right directions, are shifted one another in the front and back directions, are integrally formed to be adjacent to each other in the left and right directions. 
   
   
       6 . A truss element having upper and lower walls and a connecting portion in left and right directions alternately, wherein the connecting portion connects four walls including the upper and lower walls positioned left and the upper and lower walls positioned right, cut portions are intermittently formed on the upper and lower walls and the connecting portion along front and back directions respectively, and the cut portions are arranged in a staggered manner such that those formed on the upper and lower walls and those formed on the connecting portion are shifted one another in the front and back directions. 
   
   
       7 . A truss element having upper and lower walls and a connecting portion in left and right directions alternately, wherein the connecting portion connects four walls including the upper and lower walls positioned left and the upper and lower walls positioned right, cut portions are intermittently formed on the upper and lower walls and the connecting portion along front and back directions respectively, a portion where the cut portions are arranged in a staggered manner such that those formed on the upper and lower walls and those formed on the connecting portion are shifted one another in the front and back directions, and a portion where either only one of the upper and lower walls is formed, the cut portions are intermittently formed on the upper wall or lower wall along the front and back directions to have spaces in the left and right directions, and the cut portions are arranged in a staggered manner such that those, which are adjacent to each other in the left and right directions, are shifted one another in the front and back directions, are integrally formed to be adjacent to each other in the left and right directions. 
   
   
       8 . A truss element having a plurality of upper elements on an upper surface side to be adjacent to each other in left and right directions and a plurality of lower elements on a lower surface side to be adjacent to each other in the left and right directions, wherein the upper element has an upper wall and a side wall extending downward to any one of left and right sides of the upper wall, adjacent upper elements are arranged to be symmetric, the lower element has a lower wall and a side wall extending upward to any one of left and right sides of the lower wall, adjacent lower elements are arranged to be symmetric, the upper walls of the upper elements and the lower walls of the lower elements are jointed to each other by joint portions having a space in front and back directions, respectively, the side walls of the upper elements and the side walls of the lower elements are jointed to each other by joint portions having a space in the front and back directions, respectively, and the joint portions are arranged in a staggered manner such that the joint portions of the upper and lower walls and the joint portions of the side walls are shifted on another in the front and back directions. 
   
   
       9 . The truss element according to  claim 8 , wherein a portion having the upper elements and the lower elements to be opposed to one another, and a portion having only either ones of the upper elements and the lower elements to be adjacent to each other in the left and right directions, are integrally formed to be adjacent to each other in the left and right directions. 
   
   
       10 . A space truss diagonal member manufacturing method comprising the steps of:
 spreading the truss element according to  claim 4  in a vertical direction; and   laying chord members on diagonal lattice points formed on upper and lower end portions in front and back directions to be fixed thereto and then spread in the vertical direction.   
   
   
       11 . A space truss diagonal member manufacturing method, comprising the steps of:
 spreading the truss element according to  claim 5  in a vertical direction; and   laying chord members on diagonal lattice points formed on upper and lower end portions in front and back directions to be fixed thereto and then spread in the vertical direction.   
   
   
       12 . A space truss diagonal member manufacturing method, comprising the steps of:
 spreading the truss element according to  claim 6  in a vertical direction; and   laying chord members on diagonal lattice points formed on upper and lower end portions in front and back directions to be fixed thereto and then spread in the vertical direction.   
   
   
       13 . The space truss diagonal member manufacturing method, comprising the steps of:
 spreading the truss element according to  claim 7  in a vertical direction; and   laying chord members on diagonal lattice points formed on upper and lower end portions in front and back directions to be fixed thereto and then spread in the vertical direction.   
   
   
       14 . A space truss diagonal member manufacturing method comprising the steps of:
 spreading the truss element according to  claim 8  in a vertical direction; and   laying chord members on diagonal lattice points formed on upper and lower end portions in front and back directions to be fixed thereto and then spread in the vertical direction.   
   
   
       15 . A space truss diagonal member manufacturing method, comprising the steps of:
 spreading the truss element according to  claim 9  in a vertical direction; and   laying chord members on diagonal lattice points formed on upper and lower end portions in front and back directions to be fixed thereto and then spread in the vertical direction.   
   
   
       16 . A truss element being formed in a rectangular parallelepiped or cubic block shape, wherein cut portions, which are parallel to left and right side surfaces and leave each upper surface portion uncut, and cut portions, which are parallel to the left and right side surfaces and leave each lower surface portion uncut, are alternately formed to have spaces in left and right directions, cut portions, which are parallel to the front and back surfaces and leave each upper surface portion uncut, and cut portions, which are parallel to the front and back surfaces and leave each lower surface portion uncut, are alternately formed to have spaces in front and back directions. 
   
   
       17 . A truss element being formed in a rectangular parallelepiped or cubic block shape, wherein cut portions, which are parallel to left and right side surfaces and leave upper and lower surface portions uncut, and cut portions, which are parallel to the left and right side surfaces and leave each intermediate portion in a vertical direction uncut, are alternately formed to have spaces in left and right directions, and cut portions, which are parallel to the front and back surfaces and leave upper and lower surface portions uncut, and cut portions  4   d , which are parallel to front and back surfaces and leave each intermediate portion in a vertical direction uncut, are alternately formed to have spaces in front and back directions. 
   
   
       18 . A truss element having a portion being formed in a rectangular parallelepiped or cubic block shape where cut portions, which are parallel to left and right side surfaces and leave each upper surface portion uncut, and cut portions, which are parallel to the left and right side surfaces and leave each lower surface portion uncut, are alternately formed to have spaces in left and right directions, cut portions, which are parallel to the front and back surfaces and leave each upper surface portion uncut, and cut portions, which are parallel to the front and back surfaces and leave each lower surface portion uncut, are alternately formed to have spaces in the front and back directions, and a portion being formed in a rectangular parallelepiped or cubic block shape where cut portions, which are parallel to left and right side surfaces and leave upper and lower surface portions uncut, and cut portions, which are parallel to the left and right side surfaces and leave each intermediate portion in a vertical direction uncut, are alternately formed to have spaces in the left and right directions, and cut portions, which are parallel to the front and back surfaces and leave upper and lower surface portions uncut, and cut portions  4   d , which are parallel to front and back surfaces and leave each intermediate portion in a vertical direction uncut, are alternately formed to have spaces in the front and back directions, wherein both portions are integrally provided to be adjacent to each other in the left and right directions or the front and back directions. 
   
   
       19 . A space truss diagonal member manufacturing method, comprising the steps of:
 spreading the truss element according to  claim 16  in any one of front and back directions and left and right directions; and   laying chord members on diagonal lattice points formed on upper and lower end portions in one direction to be fixed thereto and then spread in the other direction.   
   
   
       20 . A space truss diagonal member manufacturing method, comprising the steps of:
 spreading the truss element according to  claim 17  in any one of the front and back directions and left and right directions; and   laying chord members on diagonal lattice points formed on upper and lower end portions in one direction to be fixed thereto and then spread in the other direction.   
   
   
       21 . A space truss diagonal member manufacturing method, comprising the steps of:
 spreading the truss element according to  claim 18  in any one of the front and back directions and the left and right directions; and   laying chord members on diagonal lattice points formed on upper and lower end portions in one direction to be fixed thereto and then spread in the other direction.   
   
   
       22 . A truss element having a plurality of straight bars and a plurality of connecting elements, wherein the straight bars are arranged in left and right directions, the connecting elements have at least two left and right straight bar insertion portions, and are spaced in front and back directions, and arranged in a staggered manner such that the connecting elements adjacent to one another in the front and back directions are shifted one another by a space between the left and right straight bar insertion portions, and the straight bars are alternately inserted into the left and right straight bar insertion portions of the plurality of connecting elements arranged to have spaces in the front and back directions, and the plurality of straight bars are connected to one another in the left and right directions by the connecting elements arranged in the staggered manner. 
   
   
       23 . The truss element according to  claim 22 , the straight bars are stacked up and down, and the upper and lower straight bars are connected to one another by four connecting elements each having two upper and lower stages of left and right straight bar insertion portions arranged every other one in the front and back directions. 
   
   
       24 . A truss element having a plurality of straight bars and a plurality of connecting elements, wherein the straight bars are arranged in left and right directions and stacked in two upper and lower stages, the connecting elements, the connecting elements include four-bar connecting elements each having two upper and lower stages of left and right straight bar insertion portions and a two-bar connecting elements each having left and right straight bar insertion portions, the four-bar connecting elements and the two-bar connecting elements are arranged in a staggered manner to be spaced in front and back directions alternately and shifted one another by a space between the left and right straight bar insertion portions in the left and right directions, the two-bar connecting elements are stacked in two upper and lower stages, the straight bars are alternately inserted into the left and right straight bar insertion portions of the plurality of connecting elements arranged to be spaced in the front and back directions, the plurality of straight bars are connects to one another in the left and right directions by the connecting elements arranged in the staggered manner, and the upper and lower straight bars are connects to each other by the four-bar connecting element. 
   
   
       25 . A truss element having a plurality of straight bars and a plurality of connecting elements, wherein the straight bars are arranged in left and right directions, the connecting elements are arranged in a staggered manner such that first connecting elements, each having four straight bar insertion portions in one column in the left and right directions, and second connecting elements are spaced in front and back directions alternately and shifted one another by two spaces between the left and right straight bar insertion portions in the left and right directions, the second connecting elements can be separated into a first element and a second element, each having two straight bar insertion portions, vertically, and the straight bars are alternately inserted into the left and right straight bar insertion portions of the plurality of connecting elements arranged to be spaced in the front and back directions, 
   
   
       26 . A space truss diagonal member manufacturing method comprising the steps of:
 inserting a plurality of straight bars into left and right straight bar insertion portions of a plurality of connecting elements having at least two left and right straight bar insertion sections alternately to be connected to one another in left and right directions; and   drawing the connecting elements in a vertical direction and the left and right directions to spread spaces among the connecting elements in the vertical direction and the left and right directions, so that the respective elements is bent in a zigzag manner.