Many machines such as cars, bulldozers and excavators have some visual blind spots. If there is no certain understanding of these visual blind areas, accidents and losses may be caused during the daily use of the operator. This article will summarize and explain several visual blind spots existing in excavators for reference only.
1. Right and rear side of excavator
The structural layout of the excavator is that the cab is on the left, the boom is in the middle, and the upper body of the excavator can rotate. From the perspective of the inside of the excavator cab, a certain height area on the right side and rear side of the excavator is the blind area of sight during operation. Many excavator collisions or collision accidents occur in this blind area. Since many excavators do not have rear-view mirrors, the distance between the fuselage and obstacles can only be estimated by experience when turning or retreating. When the turning distance on the right cannot be estimated, turn the fuselage to the right first, and the distance between the back of the excavator and the obstacle can be seen from the left. If the left side can pass smoothly, the right side will be OK.
2. Stick cylinder
Another place where it is easy to hit obstacles is the stick cylinder. Since the operator focuses on bucket digging during work, it is easy to touch the stick cylinder if there are wires or other obstacles overhead, especially when the boom is raised. Therefore, when the boom is lifted, make sure there are no obstacles above the equipment before lifting the boom.
3. Right front of the driver in the state of bending arm walking
In order to avoid high obstacles, most people often bend their arms when the excavator is walking. This action will block most of the driver's line of sight at the right front. Therefore, before the excavator needs to bend its arm to walk, the operator should ensure that there is no person standing in front of the right before moving forward.
4. Bucket cylinder
When the excavator is leveling the edge of the ground, the bucket cylinder is also a position that needs special attention. No matter what the excavator does, the bucket cylinder is always behind the stick. Therefore, it is very difficult to estimate the distance between the bucket cylinder and the obstacles that may be encountered. The operator needs to have a certain distance estimation of the equipment through long-term practice. If it is really impossible to estimate the position of the bucket cylinder under special circumstances, ask colleagues to help check the position to ensure that the bucket cylinder will not touch obstacles.
These are the common sight blind areas of excavators. Only by preventing in advance, observing in advance, accumulating experience and correctly estimating the distance can we reduce collisions and avoid accidents.
