伸缩棚（曲臂遮阳篷）是阳台、露台、商铺外摆的常用方案，靠平行四边形剪刀架实现伸缩开合。但很多用户对尺寸理解有误，导致装上去才发现“伸不出来”或“收不回去”。

Telescopic awning (curved arm sunshade) is a commonly used solution for outdoor placement of balconies, terraces, and shops, which relies on parallelogram scissor frames to achieve telescopic opening and closing. But many users have a misunderstanding of the size, leading to the realization that it cannot be extended or retracted only after installation.

伸缩棚的“伸缩”方向：只有长度可变

The "expansion" direction of the retractable shed: only the length can be changed

伸缩棚的长度方向可以伸缩（即伸出距离可调），但宽度和高度是固定的。简单说：棚子能“伸出去多少”可以调，但“多宽、多高”出厂就定了。宽度方向由立柱支撑，非常大可做到20米中间不加立柱，这是行业公认的安全上限。

The length direction of the retractable shed can be adjusted (i.e. the extension distance can be adjusted), but the width and height are fixed. Simply put, the "how much" the shed can extend can be adjusted, but the "width and height" are determined at the factory. The width direction is supported by columns, and it can reach a maximum of 20 meters without adding columns in the middle, which is the industry recognized safety limit.

尺寸理解三大误区

Three misconceptions about understanding size

“长度”和“跨度”搞反：能进出的一面是跨度（宽度） ，不要和伸缩方向（长度）搞混。

The opposite of "length" and "span": the side that can enter and exit is the span (width), not confused with the direction of expansion (length).

高度理解偏差：常说的高度是边高（立柱高度），总高=边高+弧高，弧高一般≥0.35m，跨度越大弧度越大。

Deviation in understanding height: It is often said that height is the edge height (column height), and total height=edge height+arc height. The arc height is generally ≥ 0.35m, and the larger the span, the greater the curvature.

高度限制：镀锌钢管出厂每根6米，所以伸缩棚高度建议6米以内，非常高不超过8米（超过需焊接，安全性打折扣）。

Height limit: Each galvanized steel pipe is 6 meters high when it leaves the factory, so it is recommended that the height of the expansion shed be within 6 meters and not exceed 8 meters at most (welding is required for exceeding, safety is discounted).

适用场景与出众

Applicable scenarios and limits

伸缩棚非常常用于商业外摆、阳台遮阳、露天餐厅等场景，展开即可扩大营业面积，收回仅占少量空间，无需报建永久建筑。抗风能力一般在8级以下，8级以上大风区域长期使用需慎重。

The retractable shed is most commonly used in commercial outdoor displays, balcony sunshades, outdoor restaurants, and other scenarios. When unfolded, it can expand the business area and only occupy a small amount of space when reclaimed, without the need to apply for permanent construction. The wind resistance capacity is generally below level 8, and long-term use in areas with strong winds above level 8 requires caution.

一句话总结： 伸缩棚定制前搞清楚——长度（伸缩方向）可调，宽度（跨度）和高度固定；非常大跨度20米不加柱，高度不超6米非常安全。尺寸搞错了，装上去就是“半拉子工程”。

Summary in one sentence: Before customizing a retractable shed, it is important to understand that the length (direction of expansion) can be adjusted, while the width (span) and height are fixed; The maximum span of 20 meters without columns and the height not exceeding 6 meters are the safest. The size is wrong, installing it is a 'half pull project'.

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This article is a friendly contribution from Jinan retractable shed For more information, please click: https://www.lantianpengmo.com Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.