屋顶风机安装施工方案

屋顶风机安装施工方案

1、编制说明

**车间厂房屋顶设置屋顶风机84台，分别布置在厂房屋顶上，风机单体最大

重量为188Kg，无法用汽车吊直接吊装就位，人工搬运也比较困难，因此需要考虑采用特殊的工装措施进行屋顶风机的就位。在安装的过程中，屋面瓦容易损坏，需要采取防护措施，故编制该专项方案，明确施工顺序以及防护措施措施。

2、工程概述

该厂房屋顶风机共有84台，其中76台为体积较大，长×宽×

高,1200×1200×1250mm，单体重量为188Kg，分别布置在AB跨、BC跨、EF跨和FG跨，每跨19台;另外8台体积重量较小，长×宽×高,750×750×800mm，布置

在GH跨，每台风机配有一台止回阀。 3、风机安装方法及技术措施由于屋顶风机单体重量为188Kg，人工无法直接搬运，汽车吊也无法直接吊装

就位，因此我方决定制作一套特殊工装措施进行屋顶风机的安装就位。主要方法为:在屋顶风机口边厂房通长方向上用槽钢和角钢制作滑道，在滑道上安装小车，将屋顶风机通过小车运输到安装位置，再进行就位。在滑道与屋面瓦接触的部位垫上橡胶垫，保护屋面瓦。 4、具体安装步骤

4.1 止回阀安装

每台屋顶风机都配有一台止回阀，止回阀有两种规格尺寸，一种规格为:长×

宽×高, 900×900×60mm，此种规格有76台;另一种规格:长×宽×

高,500×500×60mm，此种规格有8台。

止回阀供货时没有考虑到现场的安装条件，跟厂房屋顶风机口无法直接连接，需要现场制作支架，我方通过和业主、监理及生产厂家现场appearance of the weld appearance quality technical requirements of the project must not

have a molten metal stream does not melt the base metal to weld, weld seam and heat-affected zone surface must not have cracks, pores, defects such as crater and ash, surface smoothing, weld and base metal should be evenly smooth transition. Width 2-3 mm from the edge of weld Groove. Surface reinforcement should be less than or equal to 1 + 0.2 times the slope edge width, and should not be greater than 4 mm. Depth of undercut should be less than or equal to 0.5 mm, total length of the welds on both sides undercut not exceed 10% of the weld length, and long continuous should not be greater than 100 mm. Wrong side should be less than or at 0.2T, and should not be greater than 2 mm (wall thickness mm t) incomplete or not allow 7.5 7.5.1 installation quality process standards of the electrical enclosure Cabinet surface is clean, neat, no significant phenomenon of convex, close to nature, close the door. 7.5.2 Cabinet Cabinet face paints no paint, returned to rusted, consistent color. 7.5.3 uniform indirect gap from top to bottom, slot width <1.5mm 7.5.4 adjacent Cabinet surface roughness is 0. 7.5.5 the cabinets firmly fixed, crafts beautiful. 7.5.6 Cabinet surface gauge, switch cabinet mark clear, neat, firm paste. 7.5.7 Terminal row of neat, is reliable, the appearance is clean and not damaged. 7.5.8 cables neat and clean, solid binding, binding process in appearance. 7.5.9 the first cable production firm, crafts beautiful, clear signage does not fade. 7.5.10 fireproof plugging tight, no cracks and pores. 7.6 7.6.1 of the standard electrical wiring quality technology cable a, the multi-core wire bunch arrangement should be parallel to each other, horizontal wire harness or

wire should be perpendicular to the longitudinal multi-core wire bunch. The distance between the wire harness and wire harness symmetry, and as close as possible. B-core wiring harness into round, multi-core wire bunch used g wire binding, fastening

研究，决定止回阀以下采用安装方法:

首先在止回阀两边用L30*30*4镀锌角钢制作支架(也可用碳钢角钢刷银粉漆)，支架与止回阀用铆钉连接。角钢支架两边各伸出止回阀边部200mm，将支架固定在屋顶风机口的边延上，用自攻螺丝固定。考虑到厂房屋面有一定坡度，因此需要在下坡方向的角钢支架下用垫块垫平，根据现场实际情况，用L40*40*5角钢做垫块。具体安装方法如下图所示:

L40*40*5L30*30*4

BB

止回阀

1300

900

200L30*30*4

AA

L40*40*5

A-A剖面

150

B-B剖面

appearance of the weld appearance quality technical requirements of the project must not have a molten metal stream does not melt the base metal to weld, weld seam and heat-affected zone surface must not have