1. Do not park at will. It is better to park the excavator with extended arm in a dry room; When conditions are limited to parking outdoors, solid and flat ground shall be selected to avoid harsh environment such as humidity, saline-alkali and dust. If conditions permit, several pieces of cloth shall be used to cover the exposed oil cylinder.

2、防锈要上心，停放时，尽可能的把裸露在外的油缸收回去，防止外物磕碰和潮湿的雨雪天气对油缸的腐蚀，进而造成破坏或生锈。如果场地有限，油缸不能完全收缩回去，可以在裸露的油缸活塞杆表面涂抹一层黄油，防止生锈。

2. Take care to prevent rust. When parking, take back the exposed oil cylinder as much as possible to prevent damage or rust caused by collision of foreign objects and corrosion of the oil cylinder in wet rain and snow. If the site is limited and the oil cylinder cannot be fully retracted, a layer of grease can be applied on the surface of the exposed oil cylinder piston rod to prevent rust.

3、保存好体力，蓄电池在寒冷的环境下容易亏电，如果条件允许的话拆下蓄电池放到室内存放。

3. Keep your physical strength well. The battery is easy to lose power in cold environment. If conditions permit, remove the battery and store it indoors.

4、注意防盗喔，工程设备停放于室外时，一定要检查、清空工程设备内的贵重物品，防止物品丢失被盗。

4. Pay attention to anti-theft. When the engineering equipment is parked outdoors, it is necessary to check and empty the valuables in the engineering equipment to prevent loss and theft.

为挖掘机加长臂可以配合操纵工作臂油缸及挖掘斗油缸的伸缩作业，可使挖掘斗的活动范围扩大一倍以上，让挖掘机加长臂可以挖得更深，更远，正是因为挖掘机加长臂的开创性意义重大，很多大型工程已经慢慢开始引用挖掘机加长臂了，所以挖掘机加长臂厂家也在不断改进加长臂，可以使得更好地方便我们使用，在其他类似的工程施工中也是具有非常好的借鉴意义。

The extension arm of the excavator can cooperate with the telescopic operation of the operating arm oil cylinder and the bucket oil cylinder, which can expand the scope of the bucket more than twice, so that the extension arm of the excavator can dig deeper and farther. It is precisely because the pioneering significance of the extension arm of the excavator is significant, and many large projects have slowly begun to use the extension arm of the excavator, so the extension arm manufacturers of the excavator are also constantly improving the extension arm, It can make it easier for us to use in other similar projects.

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