推拉篷可以用在公司臨時倉儲、大排檔、門口、大型門口、停車場、倉庫堆放貨物等地方。推拉篷可以推拉伸縮，使用操作方便，而且還節省空間。但工程進行時會出現一些問題，下面來講講濟南推拉蓬工程構件夾緊以及防變形方法

The push-pull awning can be used in temporary warehouses, stalls, supermarkets, shopping malls, parking lots, warehouses, etc. The sliding awning can be pushed and pulled to expand, which is convenient to use and operate, and also saves space. However, there will be some problems during the construction. Now let's talk about the clamping and deformation prevention methods of the components of the Jinan Sliding Canopy Project

(1)構件夾緊方法：

(1) Member clamping method:

為了防止一些中小型零件的焊接變形，我通常先用剛性夾具固定工件，然后再焊接。這樣，在高溫區冷卻過程中產生的收縮變形就被夾具強行克服了。這種方法特別適用于一些塑性較好的低碳鋼，因為在焊縫附近會發生一些塑性變形，對低碳鋼的機械強度影響不大。

In order to prevent welding deformation of some small and medium-sized parts, I usually fix the workpiece with a rigid fixture before welding. In this way, the shrinkage deformation generated during the cooling process in the high temperature zone is forcibly overcome by the fixture. This method is especially suitable for some low carbon steels with good plasticity, because some plastic deformation will occur near the weld, which has little effect on the mechanical strength of low carbon steels.

但是，這種行為適用于高強度鋼板的焊接，因為為了限制文政武功技能，應力反而增加，很容易開裂。例如，一個小于30噸的高架起重機上的小車。采用構件夾緊法防止變形是非常有效的。

However, this behavior is applicable to the welding of high-strength steel plates, because in order to limit the cultural, political and martial arts skills, the stress increases instead and it is easy to crack. For example, a trolley on an overhead crane less than 30 tons. It is very effective to use component clamping method to prevent deformation.

30噸以下的橋式起重機(又稱起重機)臺車是由6mm或8mm鋼板組成的重測箱推拉蓬構件。其焊接面單一(保證焊接在一個方面，焊接后收縮力也是在一個方面)。焊接量大，變形也大。

The trolley of bridge crane (also known as crane) below 30 tons is a push-pull canopy component of re measuring box composed of 6mm or 8mm steel plates. The welding surface is single (to ensure that the welding is in one aspect, and the shrinkage force after welding is also in one aspect). Large welding amount and deformation.

采用構件夾緊法后，能很好地克服焊接過程中自身方式焊接后的收縮變形和高溫區冷卻，使鋼結構滿足技術要求，保證產品質量。

After the component clamping method is adopted, the shrinkage deformation and high temperature zone cooling after self mode welding can be well overcome, so that the steel structure can meet the technical requirements and ensure the product quality.

(2)對于推拉蓬工程的防變形法：

(2) For the deformation prevention method of sliding roof project:

在一些中板長鋼結構構件的生產中，須采用防變形法來控制焊接變形。確定焊件冷卻后變形的方向和尺寸。然后，在焊接前對冷焊件進行相同尺寸相反方向的變形，以抵消焊接引起的變形。

In the production of some medium plate and long steel structural members, anti deformation method must be adopted to control welding deformation. Determine the deformation direction and size of the weldment after cooling. Then, the cold weldment shall be deformed in the opposite direction with the same size before welding to offset the deformation caused by welding.

這種方法是人為控制的。如果掌握得好，它的效果會很好，產品也會達到技術要求。這種反向變形可以是塑性的，也可以是彈性的。應在裝配前確定焊接變形的大小和方向，并在裝配時給構件一個相反方向的變形，以抵消焊接變形。

This method is artificially controlled. If mastered well, its effect will be good and the product will meet the technical requirements. This reverse deformation can be plastic or elastic. The size and direction of welding deformation shall be determined before assembly, and the member shall be deformed in the opposite direction during assembly to offset the welding deformation.

此外在推拉蓬零件制造和焊接過程中，正接頭的裝配和焊接順序是非常重要的。在焊接過程中，能區分哪些備件應該先焊，哪些備件應該后焊。總之，要使焊接件受力均勻，冷卻均勻，以減少變形，產生較大應力。更多相關事項就來我們網站http://www.sinwida.com進行咨詢吧！

In addition, the assembly and welding sequence of the forward joint is very important during the manufacturing and welding of the sliding roof parts. In the welding process, it can distinguish which spare parts should be welded first and which spare parts should be welded later. In a word, the weldment shall be evenly stressed and cooled to reduce deformation and generate greater stress. Come to our website for more information http://www.sinwida.com Consult!