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The Characteristics Of Used ExcavatorTags: used good excavator second hand mini excavators for sale2014-01-22
For the digging force of the used excavator divided into lower digging force and the bucket digging force. The point of digging force of lower digging force and the bucket digging force is the tooth root of the scraper pan. But the power of them is different; forearm digging force is from lower oil cylinder, the bucket digging force is from the bucket cylinder. Whether the used excavator is suitable for working on the ground or not is determined by the size of the ground pressure. The ground pressure refers to the pressure the weight of the machine on the ground, which can be expressed in the following formula: ground pressure=weight present÷ all the area of contact with the ground segments.
Installing the appropriate segments on the used excavator is very important. For the crawler excavator, the standard of choosing the crawler is trying the best to use the narrowest segments. The commonly used crawler type divided into tooth segments and horizontal segments. Walking speed and traction of the crawler excavator play important roles for the machine. Walking time of used excavator is approximately one-tenth of the whole working time of the used excavator. Generally, two speeds can satisfy the walking performance of the excavator. When the used excavator is walking, it will produce a kind of power which is called traction. It is mainly decided by the walking motor of the used excavator. Both of the two kinds of walking performance parameters show the maneuverability and walking ability of the used excavator. All of these can reflect its characteristics in the samples from various manufacturers.
Climbing ability of used excavator refers to the uphill and downhill, or the stop ability in a solid or flat slope. The two methods are Angle and percentage. The improve ability of used excavator refers to the smaller one of the steady improvement in the rated capacity or the hydraulic lifting capacity rating. Steady improvement in the rated capacity is 75 percent of the tipping load. The rated hydraulic lifting capacity is 87 percent. Rotary speed means it achieves the biggest average speed when the used excavator is empty and steady turning. Which refers to the definition of rotating speed, it is not the point at which the starting or the brake rotating speed. That is to say, it is also not the turning speed of the acceleration or deceleration of the excavator. For the common excavation, when the used excavator is working in the range of 0 ° to 180 °. Rotary motor has acceleration and deceleration when it is going to 270 ° to 360 °, the speed of rotation will be stable.
Therefore, with the characteristics of the used excavator, when the used excavators in the real mining work, the turning speed of the defined above is unrealistic. It means the actual turning performance can be expressed by rotary torque acceleration or deceleration of this kind of excavator.
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