济南商铺、厂区、院子爱用伸缩棚，图的就是“晴天展开、雨天收起”。但买错=用半年布裂、臂卡、大风掀翻。

Jinan shops, factories, and courtyards love to use retractable sheds, and the picture shows' unfolded on sunny days and retracted on rainy days'. But buying the wrong one=using it for half a year, causing the fabric to crack, arm to get stuck, and strong winds to overturn.

一、按场景定结构

1、 Structure according to the scene

家庭阳台/小院：手动曲臂棚，结构简单、维护省；

Home balcony/courtyard: manual curved arm shed, simple structure, and easy maintenance;

门店外摆/咖啡馆：电动曲臂+风光雨感应，正午全伸、傍晚半伸；

Store outdoor display/caf é: electric curved arm+wind and rain sensing, fully extended at noon and half extended in the evening;

厂区/物流卸货：大跨度推拉棚，热镀锌方管框架+地面限位，别用薄壁铝凑数。

Factory/Logistics Unloading: Large span sliding shed, hot-dip galvanized square tube frame+ground limit, do not use thin-walled aluminum to make up for the number.

二、材质硬指标现场核

2、 Material hardness index on-site verification

篷布：户外用PVC涂塑布/刀刮布（≥0.5mm）或进口亚克力布，抗UV≥95%，低于650g/㎡的牛津布别碰；

Tarpaulin: Outdoor PVC coated cloth/knife scraping cloth (≥ 0.5mm) or imported acrylic cloth, UV resistance ≥ 95%, do not touch Oxford cloth below 650g/㎡;

骨架：铝合金看壁厚，镀锌钢管查实际管厚，大跨度的别信“加厚”口头话；

Skeleton: Check the wall thickness of aluminum alloy, check the actual pipe thickness of galvanized steel pipe, and don't believe the verbal words of "thickening" for large-span pipes;

电动款：户外防水管状电机+过载保护，断电能手摇收回。

Electric version: Outdoor waterproof tubular motor+overload protection, can be manually pulled back in case of power failure.

三、安装死穴在“墙和坡”

3、 Installing dead ends on walls and slopes

空心砖/保温墙不准直接打膨胀螺栓，建议预埋件加固；棚面留向外排水坡度，不然中间兜水压塌曲臂。电动款提前留防水电源点位。

Hollow bricks/insulation walls are not allowed to directly install expansion bolts and must be reinforced with embedded parts; Leave an outward drainage slope on the shed surface, otherwise the water in the middle will collapse the curved arm. Pre reserve waterproof power supply points for electric models.

四、验收连做3次开合

4、 Conduct 3 consecutive opening and closing tests for acceptance

听曲臂异响、看限位准不准、泼水测接缝渗不渗。后期每季紧螺丝、滑轨涂硅油，5级以上风提前收。

Listen to the abnormal sound of the curved arm, check the accuracy of the limit, and splash water to measure the leakage of the joint. Tighten screws and apply silicone oil to slides every quarter in the later stage, and collect wind speeds above level 5 in advance.

伸缩棚不是“遮阳布+两根杆”，是卷管、曲臂弹簧、墙体基座的合力系统——参数虚标，风一吹就现形。

The retractable shed is not a "sunshade cloth+two poles", but a joint force system of coiled pipes, curved arm springs, and wall bases - parameter virtual labeling, which appears as soon as the wind blows.