长臂挖掘机操作时需要注重哪些标准? - 租赁动态

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长臂挖掘机操作时需要注重哪些标准?

日期:2020-05-11   来源:上海体彩网http://www.rbaras.com
1、准备工作
1. Preparations
在开挖过程中,首先需对沉井进行测量,调查偏斜程度,同时把井顶连接筋统一向外弯成90度与井顶平行,并割除井壁内、外侧伸出的拉筋头,以减少沉井下沉阻力以及钢筋头对铲斗挖齿所造成的损伤。对沉井四周的地表进行平整,以便停靠机械。
In the process of excavation, it is necessary to first measure the open caisson, investigate the degree of deflection, at the same time, bend the connecting bar of the top of the well uniformly outward to 90 degrees parallel to the top of the well, and cut out the stretching bar heads inside and outside the shaft wall, so as to reduce the sinking resistance of the open caisson and the damage caused by the bar heads to the digging teeth of the bucket. The surface around the open caisson shall be leveled so as to stop the machinery.
2、停靠机械
2. Docking machinery
根据挖掘机的特点,选择适当位置停靠机械,所选位置必须保障挖掘机的斗杆与动臂能在井孔中完全垂直下伸,而且后壁与井壁能保持一定的高度,避免碰撞。
According to the characteristics of the excavator, select the appropriate position to stop the machine. The selected position must ensure that the excavator's stick and boom can fully extend vertically in the well hole, and the back wall and the well wall can maintain a certain height to avoid collision.
加长臂挖掘机
3、开挖下沉
3. Excavation subsidence
在井顶安排一名值班员负责挖掘机开挖井底时的现场指挥,挖掘机司机根据目测结果以及值班员的手势进行操作。首先将动臂前倾15度,使铲斗挖齿能垂直井孔下沉至底部,然后根据下挖的阻力使铲斗挖齿能够垂直井孔下沉至底部,然后根据下挖的阻力使铲斗勾回装满,!后提升前臂与斗杆使铲斗离开井孔,旋转主机底盘将铲斗移至沉井5米外倒掉。如此反复6次,再转向另一井孔的开挖,使沉井底部锅底均匀形成。在开挖过程中,会看到井壁四周的土体产生一定程度的塌陷,沉井逐渐下沉。
A duty officer shall be arranged at the top of the well to be responsible for the on-site command of the excavator when excavating the bottom of the well. The excavator driver shall operate according to the visual inspection results and the hand gestures of the duty officer. First, tilt the boom forward 15 degrees, so that the bucket digging teeth can vertically sink to the bottom of the well hole, and then according to the resistance of digging down, the bucket digging teeth can vertically sink to the bottom of the well hole, and then according to the resistance of digging down, make the bucket hook back to full,! After lifting the forearm and the stick to make the bucket leave the well hole, rotate the chassis of the main engine to move the bucket to 5 meters away from the open well and fall it. Repeat for 6 times, and then turn to the excavation of another well hole, so that the bottom of the pot at the bottom of the caisson is formed evenly. In the process of excavation, the soil around the shaft wall will collapse to a certain extent, and the sunk shaft will gradually sink.
4、降低长臂挖掘机高度
4. Lower the height of the long arm excavator
当井顶距水位线50cm时停止开挖,在此期间应减少每个井孔的开挖次数,加强左右井孔的开挖交错频率,使沉井均匀下沉;当地下水位较低时,可在挖掘机的铲斗探不到井孔底部时,明挖扩大井孔两侧的土体,以便降低长臂挖掘机的主体高度,充分利用铲斗进行沉井底部的取土作业。
When the top of the well is 50cm away from the water level line, the excavation shall be stopped. During this period, the excavation times of each well hole shall be reduced, and the excavation staggered frequency of left and right well holes shall be strengthened to make the open caisson sink evenly. When the underground water level is low, when the bucket of the excavator can not reach the bottom of the well hole, the soil mass on both sides of the open caisson shall be enlarged so as to reduce the main height of the long arm excavator and make full use of the bucket to open caisson Borrow at the bottom.
5、测量观察
5. Measurement observation
开挖结束后的!初几个小时内,井孔内的水平面会呈现出不均匀的晃动,这是在沉井的自重作用下,刃脚下的土体仍在逐渐向锅底挤出,沉井仍在下沉过程中。当水平面平静之后,沉井下沉基本稳定,可以进行测量检查。通过测量沉井点、横轴端点、井顶四侧的标高来检查沉井偏移值、倾斜度、扭转度。
After excavation! In the first few hours, the horizontal surface in the well bore will show uneven shaking, which is that under the self weight of the open caisson, the soil at the foot of the blade is still gradually squeezed out to the bottom of the pot, and the open caisson is still in the process of sinking. When the horizontal surface is calm, the sinking of the open caisson is basically stable and can be measured and checked. By measuring the elevation of the center point of the caisson, the end point of the horizontal axis and the four sides of the top of the caisson, check the deviation value, inclination and torsion of the caisson center.
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