In the working process of excavators, dangers are everywhere, and it is inevitable that some safety accidents are prone to occur. This article will share the knowledge of safety precautions for excavator operation.
1. Hold the door frame when going downhill
Everyone knows the super off-road capability of excavators. With the cooperation of crawler belts and working devices, the excavator can climb very steep slopes, and can also easily descend. There is a dangerous situation that is easy to be ignored by everyone. When the excavator is going downhill or getting off the trailer, because the fuselage is tilted forward, many drivers will habitually push the front windshield or door frame with their left hand and operate the excavator with their right hand. walk. At this time, if the door is open and not locked, the door will close quickly due to gravity, usually with great force. Hold your hand on the door frame and you will be caught. Very serious consequences.
Excavator downhill
Therefore, when the excavator is working, the door of the excavator cab is locked when it is closed, and when it is opened, it must be locked regardless of whether the door is open or closed. The driver try not to hold the door frame by hand.
2. Raise your arms high when walking
Many novices or apprentices will think that the boom of the excavator is raised to the highest, the stick is fully opened, and the bucket is up to the sky, so that the line of sight will be better when walking, and it would be cool to walk and rotate like this. In fact, walking like this is very dangerous. Because the working device is raised high, the center of gravity is high, and the vehicle will overturn if the ground is slightly uneven.
Raise your arms high when walking
So don't be cool when walking and homework. The most important thing is the way under your feet.
3. Driving on soft ground
When the excavator is working on soft ground such as swamps and river beaches, first use a bucket to test whether the ground can bear the weight of the excavator. If you forget this process, there may be serious consequences, unless you are driving an amphibious excavator. Although the excavator has a crawler design and has a large area of contact with the ground, incidents of the excavator being stuck in the silt and immovable sometimes occur! Just be aware that this can be avoided. When working on soft ground such as swamps and river beaches, you should pay attention to these points: 1. Try with a bucket first. 2. Don't stay in the same place for a long time. 3. Walk more straight and less turn.
Wetland Excavator
Don't worry if the excavator gets stuck in the mud. Don't try to climb out with a set of climbing methods, it will only sink deeper and deeper. There are many ways to rescue: 1. If the sink is not too deep, first hollow out the middle of the two crawlers and try again. 2. If you still can’t get out, try how deep the silt is. If it’s not very deep, just dig up all the silt in front of you, make your own way, and slowly approach the hard ground on the shore. 3. If the silt is infinitely deep, you can rent a few iron plates or road base plates, and press them laterally under the crawler tracks to get out of trouble easily.
Fourth, blind spot
The cab of the excavator is on the left, and the passive arm in the middle blocks the line of sight, so there is a large blind spot on the right side, especially the rear right side. Many excavator accidents cause injuries or deaths due to the rotation of the right side of the tail! Therefore, when working on a site that is not very wide, try to keep the excavator to the left, leaving more space on the right.
Excavator rearview mirror
The rearview mirror is a very fragile thing on the excavator. It is often touched off during work or transportation. Many drivers will touch it if they touch it. Anyway, it is not important, so they did not replace the rearview mirror in time. In fact, the rearview mirror on the excavator is very important, especially on the right side. Accidents often occur because of poor safety awareness!
Five, riding on the ditch to work
When the excavator is digging a trench, if the construction worker tells you that the previous section is not at the right height and asks you to ride on the trench and re-dig, you must not listen to him. Regardless of the geological conditions, you can only open half the track back at most No matter how long the distance is, it is not safe and there is a danger of collapse. Maybe the construction worker will tell you that it’s okay to come over again. Don't listen to him, because he is more concerned about the ditch than your safety. A qualified driver should have his own independent thinking and safety awareness. This is the basic professional ethics.
Excavator is dredging
Therefore, when digging the trench, you must not go back and dig again. If you are not sure, let the construction worker check a few points. If he is unsure, dig slowly. Get off the truck and walk to the bottom of the trench to see the slope. If you must go back and dig again for a long distance, you must first fill the ditch, which is troublesome but safe!
Six, pipeline
Every city has a complicated pipeline network underground. When excavators work in the urban area, they need to pay special attention to the underground pipelines. It is very dangerous to dig or break the pipelines, and most of the underground pipeline networks do not have drawings. Knowing the location and depth of the pipeline requires the driver to pay special attention to work. Because most of the pipelines are first landfilled by excavators, we can also make some estimates and judgments on the location of the pipelines based on experience. Generally, pipelines are parallel to roads, or just in the roadbed or green belt, and they all have manhole covers. , The name of the pipeline will be written on the manhole cover, and the line of multiple manhole covers is the direction of the pipeline. Usually, there are many kinds of pipelines buried under a road. The deeper ones are rainwater and sewage. In the past, cement pipes were mostly used, but now corrugated pipes are used. The more shallow ones are the tap water and gas pipes. In the past, the tap water was made of thick cast iron pipes, while the gas pipes were protected by PE pipes. The more shallow ones are electricity and communications, which are generally protected by PVC pipes on the outside and wires or optical cables inside. Among them, water, electricity, and gas are all very dangerous. If you dig the fiber optic cable for the National Defense Forces, the consequences will be very serious. You must pay special attention to excavation in urban areas.
Excavator digs municipal pipeline
When the pipeline is buried, sand is usually filled first, and sand is used to protect the pipeline and compact both sides. So when the excavator suddenly digs pure sand in the urban area, or suddenly the soil is loose and the color is different, there is a possibility that there will be a pipeline next to it. Fragile materials such as corrugated pipe or PVC pipe must be manually cleaned.
Of course, not all pipelines are underground, but some are in the sky. A common mistake many novices make is to concentrate 100% of their attention on the excavator bucket, but they don't know that the stick cylinder has touched the wire when the arm is raised. No matter what kind of wire is in the air, first observe whether there is insulation. It does not matter if there is insulation. Do not touch a wire without insulation. It will break when touched, and it may damage the cylinder. In case the cylinder shaft is damaged by electricity, never retract it. Retracting will scratch the oil seal. It should be polished with extremely fine sandpaper or polished with a special tool. If it is a high-voltage wire, keep a safe distance.
