挖掘机的应用范围十分广泛，通过换装不同的附属装置，如液压锤、液压剪、推土铲、扒斗等可以完成破碎、拆卸、抓取等多种作业。

The application range of excavators is very wide, and various operations such as crushing, dismantling, and grabbing can be completed by replacing different auxiliary devices, such as hydraulic hammers, hydraulic shears, bulldozers, and buckets.

1.反铲作业

1. Backhoe operation

反铲作业一般在地面以下进行，主要以挖掘为主。（1）使用斗杆和铲斗共同进行挖掘。当铲斗液压缸与连杆、斗杆液压缸与斗杆都成90°角时，可获得大的挖掘力和挖掘效率。（2）尽量使斗齿方向与挖掘方向保持一致，减少挖掘阻力和斗齿磨损量。

Backhoe operations are generally carried out below the ground, mainly through excavation. (1) Use the stick and bucket together for excavation. When the hydraulic cylinder of the bucket is at a 90 ° angle to the connecting rod and the hydraulic cylinder of the stick is at a 90 ° angle to the stick, a large digging force and efficiency can be achieved. (2) Try to keep the direction of the bucket teeth consistent with the excavation direction, reducing excavation resistance and bucket tooth wear.

2.正铲作业

2. Shovel operation

正铲作业一般在地面以上进行，铲斗的转动方式与反铲时相反。使用斗杆液压缸来刮削地面。正铲时的挖掘力小于反铲时的挖掘力。

The shovel operation is generally carried out above the ground, and the rotation of the bucket is opposite to that of a backhoe. Use a stick hydraulic cylinder to scrape the ground. The excavation force during the front shovel is smaller than that during the back shovel.

3.挖沟作业

3. Trenching operations

通过配置与沟的宽度相对应的铲斗，使两侧履带与要挖沟的边线平行，可地进行挖沟作业。挖宽沟时，先挖两侧，后挖去中间部分。

By configuring buckets corresponding to the width of the ditch, the tracks on both sides can be parallel to the edge of the ditch to be excavated, allowing for trench excavation operations. When digging a wide ditch, first dig both sides and then remove the middle part.

挖掘机橡胶履带的特点橡胶履带具有质量轻、振动小、噪声低、附着力大、地面适应性好、不损坏路面等特点；尤其适合在城市道路施工。

The characteristics of rubber tracks in excavators include light weight, low vibration, low noise, strong adhesion, good ground adaptability, and no damage to the road surface; Especially suitable for urban road construction.

橡胶履带和钢履带的基本结构是一样的，通常也由导向轮、托轮、驱动轮、支匿轮、履带和行走架等部分组成，其主要区别和特点是：

The basic structure of rubber tracks and steel tracks is the same, usually composed of guide wheels, support wheels, drive wheels, support wheels, tracks, and walking frames. The main differences and characteristics are:

（1）橡胶履带是用橡胶模压而成的整条连续履带，心部用织物和多条钢丝绳加强，外侧有履刺，内侧有传动件。钢制的传动件镶嵌在硫化橡胶带里。橡胶履带的主要参数是节距、节数、履带宽度、花纹样式、预埋金属件样式等。

(1) Rubber track is a continuous track made of rubber molding, reinforced with fabric and multiple steel wire ropes at the center, with spikes on the outer side and transmission components on the inner side. Steel transmission components are embedded in vulcanized rubber belts. The main parameters of rubber tracks are pitch, number of sections, track width, pattern style, and embedded metal part style.

（2）驱动轮安装在行走减速器上，用来卷绕履带，以增加械行驶作业。橡胶履带用的驱动轮采用凸齿齿形，节距为128mm。履带工作过程中有弯曲应力，会引起履疲劳损坏，故驱动轮径不易过小。

(2) The driving wheel is installed on the walking reducer to coil the track and increase the operation of the machinery. The driving wheel used for rubber tracks adopts a convex tooth profile with a pitch of 128mm. During the operation of the track, there is bending stress, which can cause fatigue damage to the track, so the driving wheel diameter is not easily too small.

（3）支重轮、托轮和导向轮分跨在履带齿的两边，压在橡胶平面上，为防止轮缘切割和严重挤压橡胶而损伤，故轮缘较宽，由于履齿较高，故轮体较大。

(3) The supporting wheels, supporting wheels, and guide wheels are separated on both sides of the track teeth and pressed against the rubber surface. To prevent damage caused by cutting and severe compression of the rubber on the wheel flange, the wheel flange is wider. Due to the higher tread teeth, the wheel body is larger.

有了长臂挖掘机上面的小总结，希望对广大客户有所帮助，如果有什么不理解的或者寻求帮助的请点击我们的网站：//www.wondgo.com或者来电咨询，我们会尽全力为您

With the summary on the long arm excavator, we hope it can be helpful to our customers. If you have any questions or need help, please click on our website: //www.wondgo.com Or call to inquire, we will do our best to solve it for you