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如何解决挖掘机加长臂工作过快的问题?

日期:2019-06-18   来源:http://www.dybocheng.com
  当你看到这个问题时,你一定在想。挖掘机加长臂的快速工作速度对整个工程来说不是件好事吗?为什么这是个问题?事实上,这里提到的速度是基于您的挖掘机的设定速度。部分挖掘机改装安装了小松挖掘机伸缩臂,由于设备本身的速度存在差异,导致伸缩臂失效。那么如何解决这个问题呢?下面的内容希望能帮助你回答这个问题!
  When you see this question, you must be thinking about it. Isn't it a good thing for the whole project that the excavator's elongated arm works fast? Why is this a problem? In fact, the speed mentioned here is based on the set speed of your excavator. Some excavators have been refitted and installed Komatsu excavator telescopic boom, which is invalid due to the difference in the speed of the equipment itself. So how to solve this problem? The following contents hope to help you answer this question!
  1. 原因:
  1. Reasons:
  采用加长臂工作装置的挖掘机,其动臂和铲斗杆长,工作范围大。挖掘机按正常工作速度设定工作速度时,其动臂和斗线速度过快,操作人员难以控制,容易发生安全事故。因此,有必要解决加长臂运行速度过快的问题。
  The excavator with elongated arm working device has long arm and shovel pole and wide working range. When the excavator sets its working speed according to the normal working speed, the speed of its arm and bucket line is too fast to be controlled by the operator, which is prone to safety accidents. Therefore, it is necessary to solve the problem that the running speed of the lengthened arm is too fast.
  2. 选择改进计划:
  2. Choose improvement plans:
  挖掘机工作装置的主控制阀由先导压力油控制,先导压力油进入主控制阀芯端,推动主控制阀芯左右移动,打开主控制阀回路。它可以通过减小主控制阀的尺寸来改进。
  The main control valve of excavator working device is controlled by pilot pressure oil. The pilot pressure oil enters the end of the main control valve core, pushes the main control valve core to move left and right, and opens the main control valve loop. It can be improved by reducing the size of the main control valve.
  加长臂挖掘机
  Extended arm excavator
加长臂挖掘机
  从主控制阀芯行程和流量面积曲线可以看出,主控制阀芯的开启过程是逐渐增加的,阀芯行程越大,主控制阀的流量面积越大。当阀芯运动到行程结束时,开口达到最大,通过主控制阀的流量达到最大。
  It can be seen from the flow and area curves of the main control spool that the opening process of the main control spool is gradually increasing. The larger the spool stroke is, the larger the flow area of the main control valve is. When the spool moves to the end of the stroke, the opening reaches the maximum and the flow through the main control valve reaches the maximum.
  可以看出,主控制阀芯的极限可以减小阀芯的行程。当主配压阀芯左、右端移动,控制主控制阀阀芯不能达到完整的中风,主控阀阀门开度不能达到最大,可以减少流动区域,降低液压缸的流量,从而减少工作设备的速度。
  It can be seen that the limit of the main control spool can reduce the stroke of the spool. When the left and right ends of the main valve core move, the control valve core can not achieve a complete stroke, and the opening of the main valve can not reach the maximum, which can reduce the flow area, reduce the flow of the hydraulic cylinder, and thus reduce the speed of the working equipment.
  3.实现和验证:
  3. Implementation and verification:
  在以上分析的基础上,通过对主控制阀的测量,确定阀芯的全行程为10mm。安装主控制阀阀芯行程限位接头,工作装置转速明显降低。
  On the basis of the above analysis, through the measurement of the main control valve, the whole stroke of the spool is determined to be 10 mm. Installation of the main control valve spool travel limit joint can significantly reduce the speed of the working device.
  以动楔降为例,在安装行程限位接头后进行控制协调试验。发现当阀芯行程限制关节安装了2.5毫米的旅行限制,移动臂的所有指标下降,整个机器的控制和协调达到标准工作设备挖掘机动臂下降速度,从而满足挖掘机的需求。
  Taking the moving wedge drop as an example, the control coordination test is carried out after the travel limit joint is installed. It is found that when the valve core travel restriction joint is installed with 2.5 mm travel restriction, all indicators of the mobile arm decrease, and the control and coordination of the whole machine reach the descending speed of the excavator arm of the standard working equipment, thus meeting the needs of the excavator.
  使用上述方法对挖掘机的加长臂进行改进,可以有效地解决工作装置过快的问题,你学过吗?如果您有需要,欢迎来电咨询,我们的网站是http://www.dybocheng.com
  Using the above method to improve the elongated arm of excavator can effectively solve the problem of too fast working device. Have you ever learned it? If you need it, please call us for advice. Our website is http://www.dybocheng.com.

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