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Excavator relevant parameters Introduction

Release Time: 2021-05-06


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Excavator relevant parameters Introduction

An excavator is an earth-moving machine that uses a bucket to excavate materials above or below the bearing surface, and load it into a transport vehicle or unload it to a stockyard. When purchasing an excavator, it is necessary to refer to the following standards

1. Operating weight

Operating weight is one of the three important parameters of an excavator (engine power, bucket capacity, operating weight).

The operating weight determines the level of the excavator and the upper limit of the excavator's digging force.

Digging force≦m.

Used Caterpillar excavator

2. Working weight

m: The coefficient of adhesion between the ground and the track.

If the digging force exceeds this limit, in the case of a backhoe, the excavator will slip and be pulled forward, which is very dangerous. In the case of a forward shovel, the excavator will slip backward.

3. Digging power

For the digging force, the digging force is mainly divided into the forearm digging force and the bucket digging force.

The action points of the two digging forces are the root of the bucket (the lip of the bucket), but the power is different. The forearm digging force comes from the forearm cylinder; and the bucket digging force comes from the bucket cylinder.

5. Ground pressure

The specific ground pressure determines the ground conditions that the excavator is suitable for working.

CAT 140 K

Ground pressure refers to the pressure generated by the weight of the machine on the ground, expressed by the following formula:

Ground pressure = working weight ÷ total area in contact with the ground

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