Some knowledge about excavators

| The arm and forearm of the excavator |

The forearm of the excavator is a labor-intensive lever, and the pin in the middle is the fulcrum. The arm is upward and the forearm is downward! The longer the arm, the less labor it will take, and vice versa! The arm is at its longest at this time, so the forearm has the greatest digging force at this angle!

The advantages are: 1. Improve the working efficiency of the excavator and reduce fuel consumption, 2. Reduce the friction of each pin and reduce loss, 3. Reduce the metal fatigue of each component of the excavator.

| Excavator bucket |

The bucket is also a force lever principle. Similarly, the excavator can reach its maximum when the arm is at its longest. The angle between the bucket teeth and the ground is preferably about 35 degrees for hard soil, and 45 degrees for general soil, because this angle can maximize the pressure. At this time, the excavation distance is the shortest, and the length of the forearm extension is also reduced. The longer the forearm, the smaller the excavation force.

The advantages are: 1. Improve the working efficiency of the excavator and reduce fuel consumption, 2. Reduce the friction of each pin shaft and reduce loss, 3. Reduce the metal fatigue of each component of the excavator.

| Excavator rotation |

Excavator rotation is also a laborious lever. The farther the arm is extended, the more laborious it is. Therefore, try not to extend it too far when using rotation, and this method of operation should be reduced. The above picture is a wrong demonstration.

Try to reduce the length of the arm as much as possible, which will be more powerful. Don't sweep too much at a time, and don't do impact operations to avoid damaging the slewing system and various pins.

| Excavator guide wheel |

When turning on uneven ground, try to prop up the guide wheel as much as possible, but not too high, depending on the terrain.

The advantages are: 1. Increase turning speed. 2. Reduce the side force of the excavator's guide wheel due to uneven road surface, making the guide wheel life longer. 3. Reduce the lateral force of the track due to uneven road surface, thereby increasing the track life and the life of the supporting wheel.

Of course, there are some disadvantages: 1. It has certain side effects on the disk. 2. It causes too much pressure on the drive wheel.

If there are stones on the road, it is best to go around them instead of pressing them from the side of the track shoes. This will cause excessive force on a single track, damage the track shoes, and even break the chain tendons in severe cases. If you cannot go around, press the middle of the track to prop up the car and move it, so as to minimize the impact of stones on the track.