采用膨脹螺栓固定電纜橋架的好處
1. cable tray laying level, supporting the distance should be 1 / 4 span bridge between the distance within the joint, it is better for large span bridge put butt on the supporting frame, to increase support in a separate curved way or three way place, perpendicular to the direction of the arm every 1.5m with a fixed point.
2.電纜橋架的大載荷、支撐間距應(yīng)小于允許載荷和支撐跨距。
2. the maximum load and supporting space of the cable tray shall be less than the allowable load and span.
3.橋架內(nèi)的電纜應(yīng)用電纜卡帶、或金屬電纜卡子進(jìn)行分組固定。對(duì)于水平敷設(shè)的電纜通常每隔2m左 右作一固定點(diǎn);對(duì)于垂直敷設(shè)的電纜應(yīng)每隔1—1.5m固定一次，在改變標(biāo)高的端部也應(yīng)予以固定。
The application of cable cable, cable clip or metal cassette tray fixed group 3. For horizontally laid cables, a fixed point is usually maintained at intervals of about 2m; for vertically laid cables, shall be fixed once every 1 to 1.5m, and shall be fixed at the end of the change elevation.
4.橋架的安裝應(yīng)以規(guī)范為準(zhǔn)，橋架在安裝過 程中嚴(yán)禁載人。
4. the installation of the bridge shall be subject to the state standards, and the bridge shall be manned strictly during the installation.
5.電纜橋架按電力施工規(guī)范要求應(yīng)進(jìn)行良好接地，對(duì)于鍍鋅電纜橋架無(wú)須有專門接地裝置，其本體 即可作為接地干線;對(duì)于表面進(jìn)行非金屬處理的橋架則必須有專門的接地裝置.
5. cable tray should be well grounded in the electric power construction specification for galvanized cable tray without special grounding device, the body can be used as a grounding line; for surface treatment of non metal bridge must have special grounding device.
6.橋架的立柱、托臂等支架可與基礎(chǔ)預(yù)埋件焊接固定，也可采用膨脹螺栓固定，對(duì)于現(xiàn)場(chǎng)焊接處一 定要做好防腐處理，通常由用戶現(xiàn)場(chǎng)涂刷防腐漆。
The 6. column, frame bridge can be fixed and welded based embedded parts, also can use the expansion bolt, for on-site welding must be good anti-corrosion treatment, usually by the user site brushing anticorrosive paint.
橋架的接地線可用VV- 16mm2電纜或等截面的銅編織線，該線通常由用戶自備，如由本廠供貨，則應(yīng)在合同中注明，長(zhǎng)距離的電纜橋架每隔30—50m接地一次。
The bridge ground available VV- 16mm2 cable or non copper braided wire, the line is owned by the user, such as by the factory delivery, shall be specified in the contract, the long distance cable tray every 30 50m grounding once.
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