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挖掘机加长臂工作速度过快怎么解决?

文章作者:必赢亚州官网 发布日期:2020-12-24   来源:www.bluewebcreative.com
看到这个问题,我想我们会有疑问。扩展臂在整个项目中工作得很快,这不是一件好事吗?小编为什么说这是一个问题呢?事实上,这里提到的速度是与你们挖掘机的设定速度相比较的。一些挖掘机已经被修改为安装挖掘机的伸缩臂,这与设备本身的速度不同,导致伸缩臂无法控制。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!
Seeing this problem, I think we will have doubts. The expansion arm works very fast in the whole project. Isn't that a good thing? Why does Xiaobian say that this is a problem? In fact, the speed mentioned here is compared with the set speed of your excavator. Some excavators have been modified to install the telescopic boom of excavators, which is different from the speed of the equipment itself, so the telescopic boom cannot be controlled. So how to solve this problem? The following content hope to help you answer this question!
1. 原因:
1. Reasons:
挖掘机配有加长臂工作装置,移动臂长,斗杆长,工作范围大,容易发生安全事故。当挖掘机的工作速度设定为正常工作速度时,移动臂和斗杆线的速度太快,操作人员无法控制。因此,有必要解决加长臂工作装置移动过快的问题。
The excavator is equipped with a working device of lengthening arm, with long moving arm and long dipper stick, which is easy to cause safety accidents. When the working speed of the excavator is too fast, the operator can not set the speed of the stick. Therefore, it is necessary to solve the problem that the working device of the lengthening arm moves too fast.
2. 改进方案的选择:
2. Selection of improvement scheme:
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阀芯端,推动阀芯左右移动,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 spool end of the main control valve, pushes the spool to move left and right, and opens the main control valve circuit. It can be improved by reducing the size of the main control valve.
根据主控制阀阀芯行程和流量面积曲线可以看出,主控制阀阀芯开启过程逐渐增大,阀芯行程越大,主控制阀的流量面积越大。当阀芯移动到冲程的末端时,开口达到,通过主控制阀的流量达到。
According to the main control valve spool stroke and flow area curve, it can be seen that the opening process of the main control valve spool gradually increases, and the larger the spool stroke, the larger the flow area of the main control valve. When the spool moves to the end of the stroke, the opening reaches, and the flow through the main control valve reaches.
从而,主控制阀阀芯极限,可以减少阀芯行程。当主滑阀控制左、右端移动,控制的主要控制滑阀不能达到完整的中风,主控阀阀门开度不能达到,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。
Thus, the limit of the main control valve spool can reduce the spool stroke. When the main slide valve controls the movement of the left and right ends, the main control slide valve can not achieve complete stroke, and the valve opening of the main control valve can not reach the goal, which can reduce the flow area, reduce the flow rate of the hydraulic cylinder, and thus reduce the speed of the working equipment.
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Extended boom excavator
3.实现和验证:
3. Implementation and verification
根据以上分析,通过对主控制阀的测量,确定阀芯的全行程为10mm。主控制阀阀芯行程限位接头安装后,工作装置转速明显下降。
According to the above analysis, through the measurement of the main control valve, the full stroke of the valve core is determined to be 10 mm. After the installation of the limit joint of the valve core of the main control valve, the speed of the working device decreased obviously.
以动劈落差为例,进行了阀芯行程限位接头安装后的操纵性和协调性试验。发现当阀芯位移限制关节安装了2.5毫米的旅行限制,动臂下降的指标和整个机器的可操作性和协调达到挖掘机动臂的下行速度的标准工作设备,可以满足挖掘机的需求。
Taking the dynamic wedge drop as an example, the maneuverability and coordination test of the spool travel limit joint after installation are carried out. It is found that when the valve core displacement limit joint is installed with a travel limit of 2.5mm, the boom lowering index and the maneuverability and coordination of the whole machine can reach the standard working equipment of the downward speed of the excavator boom, which can meet the needs of the excavator.
利用以上方法对挖掘机的伸缩臂进行改进,可以有效地解决工作装置速度过快的问题,你了解了吗?
Using the above method to improve the telescopic arm of excavator can effectively solve the problem of too fast working device, do you understand?
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