JPH0578123U - Cable rack for rising - Google Patents

Abstract

(57) [Summary] [Structure] A cable rack for start-up construction in which the ends of the sub-girders 2 are screwed to the widthwise central portions of each member of the main girders, and cables can be arranged on both sides of the sub-girders 2. To provide. Child girder 2
One of the screw holes 2A provided at both ends is located at a position apart from the axial core portion in the longitudinal direction of the spar 2 and at positions where the screw holes 2A at the left and right ends are symmetrical with respect to the axial core portion. Open each one. A pair of slave girder connection holes 1A for connecting the cable mounting surface of the slave girder 2 at the respective positions of the forward and reverse surfaces are opened at the screwing positions of the slave spar 2 of the main spar 1. Further, the child spar connecting hole 1A is opened in a long hole shape. [Effect] The number of processing steps for the double-sided rack is small, and at the time of installation of the cable rack, the rotation of the sub-beam can be prevented by a single screw stop.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to an assembling type cable rack used for starting up, and more particularly to a rising cable rack suitable for preventing rotation of a child girder connected to a central portion of a parent girder.

[0002]

[Prior Art]

 Conventionally, when a vertically assembled stand-up cable rack is used for construction, a so-called double-sided rack in which a child girder is connected to the center part of the parent girder is used so that both sides of the cable rack can be used. There is. In this double-sided rack, a predetermined cable was fixed along the child girders of the cable rack that was started up, so it was necessary to connect the child girders to the parent girders so that they would not rotate. Therefore, as a conventional fixing means, a rotation-preventing projection is provided on the parent girder portion connecting the child girders (see Japanese Patent Laid-Open No. 57-13912), or two screws are used at each end of the child girder. It was preventing the rotation.

[0003]

[Problems to be solved by the device]

 However, if the protrusions for preventing rotation are processed, the number of processing steps for the cable rack increases, which hinders mass production. On the other hand, if both ends of the spar girder were to be screwed with two screws, the construction process would be complicated.

Therefore, the present invention was devised to solve the above-mentioned problems. The number of processing steps for double-sided rack is small, and moreover, when the cable rack is installed, the rotation of the child girder can be performed with a single screw stop. The purpose is to provide a rising cable rack that can be prevented.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is intended for a start-up construction in which a cable girder can be arranged on both sides of the child girder 2 by screwing the ends of the child girder 2 to the central width portions of the parent girder 1 members. Provide a cable rack. The screw holes 2A provided at both ends of the sub beam 2 are located at positions apart from the axial core portion in the longitudinal direction of the sub beam 2, and the screw holes 2A at both left and right end portions are symmetrical with respect to the axial core portion. Open one by one at each position.

On the other hand, a pair of slave girder connection holes 1A for connecting the cable mounting surfaces of the slave girder 2 at the respective positions of the forward and reverse surfaces are opened at the screwing positions of the slave spar 2 of the main spar 1.

[0007] Further, the accessory beam connecting hole 1A is opened in a long hole shape as a means for solving the problem.

[0008]

[Action]

 That is, according to this invention, the spar 2 is opened at a position distant from the axial center of the longitudinal direction of the spar 2, and the screw holes 2A at both left and right ends are symmetrically arranged with the axial center interposed therebetween. By screwing onto the parent girder 1 via the screw hole 2A, the child girder 2 is connected while being prevented from rotating.

Further, the pair of child girder connection holes 1A opened in the center portion of the width of each parent girder 1 member has a cable mounting surface of the child girder 2 connected to the parent girder 1 even when the cable mounting surface is rotated to the forward and reverse surfaces, respectively. By selecting the sub-girder connection hole 1A, the sub-girders 2 in the respective directions can be connected.

Further, the child spar connecting hole 1A can widen the adjustment range of the connecting position of the child spar 2 by selecting the connecting position of the child spar connecting hole 1A continuously opened in the shape of a long hole. You can do that.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Reference numeral 1 shown in the figure is a parent girder 1 of the cable rack. This cable rack is used for start-up construction, and the ends of the child girders 2 are screwed to the width center part of each member of the parent girder, and the cables can be arranged on both sides of the child girder 2.

The child spar 2 has screw holes 2A provided at both ends thereof in a position where the screw holes 2A are distant from the shaft core portion in the longitudinal direction of the slave spar 2, and the screw holes 2A at the left and right end portions have the shaft core portions. Open one by one at the symmetrical position via. The child spar 2 in the illustrated example has a prismatic shape with one longitudinal side opening, and a predetermined fixture is connected to this opening 2 and a cable is arranged along this side (not shown). Further, the screw holes 2A are opened in the connecting fittings 2B provided at both ends of the prismatic sub beam 2. The term "axial portion in the longitudinal direction of the accessory beam 2" as used herein means a central portion when the accessory beam 2 is rotated.

On the other hand, a pair of child girder connection holes 1A are opened at the screwing positions of the child girders 2 of the parent girder 1. The sub-girder connection hole 1A is formed so that the cable mounting surface of the sub-girder 2 can be connected at either position of the normal and reverse surfaces, and corresponds to the normal and reverse surfaces in FIGS. 1 to 3. One pair of child girder connection holes 1A are opened. At this time, the pair of slave girder connection holes 1A are opened at positions slightly apart from each other in the vertical direction so that when both the forward and reverse surfaces are used as the cable mounting surfaces of the slave girder 2, the cables on the respective surfaces are used. It can be installed in the state where it is fully separated (see Figures 1 and 2).

Further, the child spar connecting hole 1A shown in FIG. 4 is opened in a substantially 8-shaped elongated hole shape to widen the adjustment range of the attachment position of the child spar 2.

[0015]

[Effect of the device]

 The present invention achieves the original purpose by being configured as described above. That is, the opened positions of the screw holes 2A provided at both ends of the sub beam 2 are located at positions apart from the axial core portion in the longitudinal direction of the sub beam 2, and the screw holes 2A at both left and right ends are symmetrical with respect to the axial core portion. By opening one at each position, the rotation of the sub-beam 2 can be prevented even by screwing on each of the left and right. As a result, the problem of machining such as the provision of a rotation preventing protrusion is solved, and at the same time, the complicated structure at the time of construction, in which both ends of the spar 2 are screwed with two screws, respectively, is prevented.

Further, since a pair of slave girder connection holes 1A for connecting the cable mounting surface of the slave girder 2 at the respective positions of the forward and reverse surfaces are opened at the screwing position of the slave girder 2 of the master girder 1, the master girder 1 is formed. Even if the cable mounting surfaces of the sub-girders 2 to be connected to the front and rear surfaces are rotated respectively, the sub-girders 2 in the respective directions can be connected by selecting the sub-girder connection holes 1A. Both sides of can be freely selected as the mounting surface of the cable.

Further, since the subsidiary spar connecting hole 1A is continuously opened like a long hole, by selecting the connecting position of the subsidiary spar connecting hole 1A, the adjustment range of the connecting position of the subsidiary spar 2 is expanded. However, it is possible to install cables that are suitable for the construction site.

As described above, according to the present invention, the number of processing steps for the double-sided rack is small, and at the time of installing the cable rack, it is possible to prevent the rotation of the sub-beam with one screw stop. It has various practically useful effects such as the ability to freely select the cable mounting surface.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing this device.

FIG. 2 is a side view of the main part of this device.

FIG. 3 is an enlarged side view of the main part of this device.

FIG. 4 is an enlarged side view of essential parts showing another embodiment of the child girder connection hole.

FIG. 5 is a perspective view showing a construction state.

[Explanation of symbols]

1 Parent girder 1A Child girder connection hole 2 Child girder 2A Screw hole 2
B Connecting fitting 2C Opening 3 Fixing screw

Claims (3)

[Scope of utility model registration request] 1. A cable rack for start-up construction, in which the ends of child girders are screwed to the center part of the width of each parent girder member, and cables can be arranged on both sides of the child girders. The screw holes provided at both ends were opened one by one at positions apart from the axial core in the longitudinal direction of the spar and at positions where the screw holes at both left and right ends were symmetrical with respect to the axial core. Cable rack for rising, which is characterized by that. 2. A stand-up cable rack characterized in that a pair of slave girder connection holes for connecting the cable mounting surface of the slave girder at the respective positions of the forward and reverse surfaces are opened at the screwing position of the main girder. .. 3. The child spar connecting hole is opened in the shape of an elongated hole.
Cable rack for startup described.