The extended arm is a front-end working device designed and manufactured to elongate the working range of excavators according to working conditions. According to their operation methods, they are divided into: demolition type extension arm, deep pit type extension arm, and pile driving type extension arm; According to its number of segments, it can be divided into: two segment extended arm, three segment extended arm, and four segment extended arm; According to its performance, it can be divided into fixed extension arms, sliding extension arms, telescopic extension arms, etc.

挖掘机加长臂适用范围：

Scope of application for excavator extension arm:

（一）土方基础工程；

（1） Earthwork foundation engineering;

（二）深坑挖掘工程

（2） Deep pit excavation engineering

（三）市政工程，河道清理；

（3） Municipal engineering, river cleaning;

（四）特殊用途，如拆楼破碎。

（4） Special purposes, such as building demolition and crushing.

根据不同挖掘机型号制作长度为13-32米范围

Produce a length range of 13-32 meters according to different excavator models

加长臂使用材质为Q420Q550Q690等度材料抗拉度强

The material used for the lengthening arm is Q420Q550Q690, which has strong tensile strength

制作产品重量轻结构强使挖机的承受负何力达到较小范围

The light weight and strong structure of the product make the excavator bear a small range of negative forces

开挖特殊工程作业较好帮手能完成挖机标准配置做不了的作业

Good assistants for special excavation engineering operations can complete tasks that cannot be done with standard excavator configurations

加长臂的特点：挖掘机加长臂使用范围较广功能较多，其本身具有挖掘破碎清钩钻孔推土等功能，从某种角度上来说切实的实现了一机多用的功能。挖掘机加长臂提升了挖掘机的机械化程度，机身360°无压力旋转更是为设备的后续施工提供了便捷，此外该设备能够在一些相对狭小的区域内工作，更是增加了施工的便利性。

The characteristics of the extended arm: The extended arm of the excavator has a wide range of uses and multiple functions. It has functions such as excavation, crushing, hook cleaning, drilling, and soil pushing, which effectively realizes the multifunctional function of one machine from a certain perspective. The extension of the excavator arm enhances the mechanization of the excavator, and the 360 ° pressure free rotation of the body provides convenience for subsequent construction of the equipment. In addition, the equipment can work in relatively small areas, which increases the convenience of construction.

加长臂配置

Extended arm configuration

加长臂配置: 加长大臂一台加长小臂一台挖斗一台铲斗油缸一台工字架连杆片一台套销轴6根软管4条黄油管5条配件包一个

Extended arm configuration: one extended large arm, one extended small arm, one digging bucket, one bucket oil cylinder, one I-frame connecting rod piece, one set of pin shafts, 6 hoses, 4 grease pipes, 5 accessory packages

加长臂主要用于深坑作业的地基工程高空作业的楼房拆卸和河道清理等领域，可以快捷地完成工程要求的各项指标。加长臂可分为两段式加长臂和三段式加长臂，两段式加长臂主要适用于深堑挖掘和河道清淤工作，三段式加长臂主要适用于高层建筑的拆卸等工程。

The extended arm is mainly used in the fields of foundation engineering for deep pit operations, building demolition for high-altitude operations, and river cleaning, which can quickly complete various indicators required by the project. The extension arm can be divided into two sections and three sections. The two section extension arm is mainly suitable for deep excavation and river dredging work, while the three section extension arm is mainly suitable for high-rise building demolition and other projects.

小臂：不管是反铲或是正铲挖掘机的小臂，其结构主要是由上下盖板左右墙板中缸杆耳座铲斗缸筒座小臂后套小臂中套小臂嵌套等构件组成。

Small arm: Whether it is a backhoe or a front shovel excavator, its structure is mainly composed of components such as upper and lower cover plates, left and right wall panels, cylinder rod ear seats, bucket cylinder barrel seats, small arms, back sleeves, middle sleeves, small arms, and nested sleeves.