長臂挖掘機

省時 省力 省財富

大小臂在作業狀態基本每個動作都要受力，雖然鋼鐵冶煉技術在如今已經非常發達，但每個產品都有它的使用壽命，因此在經過一段時間的使用後，長臂挖掘機大小臂都會一定幾率出現裂開的情況，隻是開裂的情況各有千秋。

In the working state, almost every action of the large and small arms needs to be subjected to force. Although steel smelting technology is already very developed today, each product has its service life. Therefore, after a period of use, there is a certain probability that the large and small arms of a long arm excavator will crack, but the cracking situation varies.

出現開裂問題時，大家一般都會到修理廠進行裂開部分的修複工作，但是，各修理廠師傅技術參差不齊，有些修好能頂住，有些修不好頂不住。其實除了跟本身的技術有關外，更重要的是修複的方案問題。

When there is a cracking problem, everyone usually goes to the repair shop to repair the cracked part. However, the skills of the technicians in each repair shop vary, some can withstand it well, while others cannot withstand it well. In fact, besides being related to one's own technology, what is more important is the issue of the repair plan.

由於斷裂的情況不一，但是大小臂都是焊結構件，修補無非都是焊接。如果斷裂部分在大臂油缸耳座前麵一點，不建議繼續工作，防止繼續撕裂，產生事故。針對這個開裂情況該用何種修複方法？

Due to varying degrees of fracture, both the large and small arms are welded components, and repairs are mostly welding. If the broken part is slightly in front of the ear seat of the boom oil cylinder, it is not recommended to continue working to prevent further tearing and accidents. What repair method should be used for this cracking situation?

我們應該切割一部分，由斷裂處左右各割去側板180-200，下麵的蓋板以側板割去的180-200往左右再多割去約150。接下來，在斷裂的蓋板下麵打好襯板，焊好，蓋板裂縫也一並焊好焊接過程應該平整無氣泡產生。

We should cut a portion, cutting 180-200 of the side panels from each side of the fracture, and cutting about 150 more of the lower cover plate from the 180-200 cut of the side panels to the left and right. Next, lay a lining plate under the broken cover plate, weld it, and weld the cracks on the cover plate together. The welding process should be smooth and free of bubbles.

焊好後，根據切去的青色部分側板，按尺寸重新切割一塊鐵板焊接上去，且在裏麵打上襯板。襯板要比封上去的側板長點。

After welding, according to the cut blue side panel, cut a new iron plate according to the size and weld it on, and put a lining plate inside. The lining board should be slightly longer than the sealed side board.

完成這步後，就差底蓋板沒有封上了，在封底蓋板之前，還是先打襯板，為了增加焊接接觸麵積，鞏固焊接的牢固性，打完襯板及封好底板後，修補工作基本完成。接下來可以打磨，補膩子上油漆了。

After completing this step, the bottom cover plate is almost not sealed. Before sealing the bottom cover plate, it is still necessary to apply a lining plate first. In order to increase the welding contact area and consolidate the firmness of the welding, after applying the lining plate and sealing the bottom plate, the repair work is basically completed. Next, you can polish and apply putty and paint.

長臂挖掘機租賃人員認為修複的關鍵除了修複方法，焊接技術因素，與焊接采用的氣體也有很大關係。一般普通的修理廠都是用普通二氧化氣體焊。在這裏建議采用二保焊焊接比較好，結實不容易開焊，因為二保焊溫度高焊接麵積比較大，能使鋼板有效的結合。

The leasing personnel of the long arm excavator believe that the key to repair is not only the repair method, but also the welding technology factors, which are closely related to the gas used in welding. Ordinary repair shops usually use ordinary gas dioxide welding. It is recommended to use secondary protection welding here as it is more durable and not easy to open, as the high temperature of secondary protection welding results in a larger welding area, which can effectively bond the steel plate.