The extended arm excavator leased the upper arm and the lower arm can not lift and extend. This fault is basically caused by the damage of the crankshaft sensor of the upper arm and the lower arm. This sensor function is equivalent to a common potentiometer, which is used to sense the angle of the working arm to prevent overoperation from overturning or collision. If the sensor fails or the line is short-circuited, the above-mentioned failures will occur. The sensor is not easy to purchase. The solution is to replace the sensor with two resistors, which can also make the excavator work normally, but will lose the protection function.

　　用两只电阻改装的原理很简单，就是把机器工作臂没有到达极限位置的信号发送给挖掘机电脑板，让电脑板继续发送工作信号到执行机构，如果传感器正常而机器还是不能正常工作，也有可能是电脑板驱动管损坏，这种情况只能维修电脑板。

　　The principle of refitting with two resistors is very simple, that is, to send the signal of the machine's working arm not reaching the limit position to the excavator's computer board, so that the computer board can continue to send the working signal to the actuator. If the sensor is normal and the machine still can't work properly, it may also be that the drive tube of the computer board is damaged. This situation can only repair the computer board.

　　华体会国际 租赁它是在车体支架及工作臂之间，加装一个加长臂，加长臂由原油缸支撑连接，并在加长臂上加装了一个工作臂油缸及挖掘斗油缸，在驾驶室内外，相应的加装了一套油缸的操纵系统，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，达到的范围更高、更深、更远，特别适应矿山、码头、仓储、抗洪抢险及特殊的场合作业，是挖掘机械的一大突破性改造，具有极大的实用价值。

　　The lease of the extended arm excavator is to install an extended arm between the body bracket and the working arm. The extended arm is supported and connected by the crude oil cylinder, and a working arm cylinder and the excavator cylinder are installed on the extended arm. In the cab and outside, a corresponding control system of the cylinder is installed, which cooperates with the telescopic operation of the working arm cylinder and the excavator cylinder to make the excavator alive. It is a breakthrough transformation of excavating machinery and has great practical value, especially for mining, wharf, warehousing, flood fighting and emergency operations and special occasions.

　　华体会国际 ，由工作臂、加长臂、原油缸、工作臂油缸、挖掘斗油缸等组成，其特征是：在车体支架上端配合连接一个加长臂，加长臂的下侧面与原油缸相连接，加长臂前端通过销轴与工作臂的一端配合连接，工作臂与加长臂之间安装一个工作臂油缸。在工作臂的前端有一个挖掘斗，挖掘斗一侧通过连杆与挖掘斗油缸的一端连接，挖掘斗油缸的另一端通过销轴与加长臂配合连接。

　　The elongated arm excavator is composed of working arm, elongated arm, crude oil cylinder, working arm cylinder, excavator bucket cylinder, etc. Its characteristics are that an elongated arm is connected with the upper end of the body bracket, the lower side of the elongated arm is connected with the original cylinder, the front end of the elongated arm is connected with one end of the working arm through a pin shaft, and a working arm cylinder is installed between the working arm and the elongated arm. There is a excavator bucket at the front end of the working arm. One side of the excavator bucket is connected with one end of the excavator bucket cylinder through a connecting rod, and the other end of the excavator bucket cylinder is connected with the elongated arm through a pin shaft.

　　是外伸缩臂，它主要是由上滑动臂与下固定臂组成的，这种组合的两侧有滚轮，所以能够自由的进行伸缩，其整体具有受力较大的特点，其简单的结构在使用的时候具有易调节的特点，操作相对简单，作业的环境也相对固定，通常行程是在4米之内。

　　First is the external telescopic arm, which is mainly composed of the upper sliding arm and the lower fixed arm. The two sides of this combination have rollers, so it can expand freely. The whole structure has the characteristics of greater force. Its simple structure has the characteristics of easy adjustment, relatively simple operation and relatively fixed working environment. Usually the journey is within 4 meters.

　　如果您有 华体会国际 租赁的需求的话可以点击我们的官网进行咨询： //www.wondgo.com/

　　If you need to rent an extended arm excavator, you can click on our website to consult: //www.wondgo.com./