How to calculate the maximum digging force of excavator
Terex rh400 excavator is the largest excavator in the world. There are six excavators in the world. The first one was manufactured in 1997, and the improved sixth one was launched in 2002. Among them, the fifth one is electric driven. The diesel engine version uses two Cummins qsk60-c diesel engines (16 cylinders, turbocharged) with a tank capacity of 16000 L. five of the six excavators are in the United States One is used in a Canadian mine, with a total weight of 1008 tons, a maximum power of 4398 horsepower and a bucket capacity of 43.58 cubic meters
extended data:
excavator, also known as excavation machinery, also known as excavator, is a kind of earth moving machinery that uses bucket to excavate materials higher or lower than the bearing surface, and load them into transport vehicles or unload them to the stockyard
the materials excavated by excavators are mainly soil, coal, silt and soil and rock after pre loosening. From the development of construction machinery in recent years, the development of excavator is relatively fast, excavator has become one of the most important construction machinery in engineering construction. The three most important parameters of excavator are operating weight (mass), engine power and bucket capacity
source of reference:
Network excavator
where: f --- output of cylinder or hydraulic cylinder, unit: Newton (n)
P --- pressure, unit: MPa
s --- effective action area, unit: square millimeter (mm & # 178;)
this formula is applicable to air pressure, hydraulic pressure and water pressure.
Bucyrus acquired Terex mining department in March 2010, and the rh400 will be proced by Bucyrus in the future. Rh400 is the largest hydraulic excavator in the world at present. O & K launched the first prototype (working weight 830 tons) in 1997. The new version of rh400 is powered by two Cummins qsk60-c diesel engines (16 cylinders, turbocharged). The capacity of oil tank is 15100 liters. Its maximum digging height reaches 20.2 meters. The digging force of bucket is 3300kn and the breaking force of bucket is 2400kn; The width of standard track shoe is 2M and the maximum moving speed is 2.2km/h; The rotary speed is 4.0rpm, and the rh400 can be driven by electric power (the power supply voltage is 6600v and the output power is 3200kW). So far, more than 10 rh400s have been put into use, and rh400s are only front shovel models< Main technical data of rh400:
* working weight: 980T
* maximum power: 3360kw (4570hp) / 1800rpm
* bucket capacity: 50m3 (load: 80t, stacking: SAE 2:1
the traditional hydraulic excavator is the largest one
Dazai, President and CEO) has developed the world's largest hydraulic excavator, with the model of "ex8000", working mass of 780 tons and bucket capacity of 40 cubic meters
the assembly of ex8000 hydraulic excavator has been completed, and the working mass and bucket capacity exceed 270 tons and 11 cubic meters of ex5500-5 excavator respectively[
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after the detailed performance test, ex8000 hydraulic excavator will be tested in a Canadian mine from October this year
so far, HCM also boasts ex1900-5, ex2500-5, ex3600-5 and ex5500-5 super large hydraulic excavators, which have obtained about 600 orders, mainly in North America, Australia, Asia and South Africa, thus winning the largest market share of this class of excavators for HCM
in order to rece the cost of mining process, the capacity of mp trucks is increasing, and ex8000 emerges as the times require
R & D concept and key characteristics
1. It can perfectly match the 300 ton mp truck
as the world's largest hydraulic excavator, ex8000 has a digging force of 2870kn (293tf) and a bucket capacity of 40m3&# 61548;[
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within 2 minutes, a 300 ton mp truck can be filled in four times&# 61548;
it is characterized by the use of the latest technology and structure. Although it is huge, its working speed can be comparable to that of ex5500&# 61548;
2. Spacious and comfortable cab
the rear end of the wide cab can be used as a small living space, in which tables, microwave ovens and other living facilities can be placed, which can ensure a comfortable living environment even when working continuously for 24 hours&# 61548;
3. The electronic wrist control mode can ensure that the action is very light and stable in large-scale operation
the electronic wrist control mode makes the operation only need to touch, which has high operability, so as to avoid fatigue after long-term operation&# 61548;[
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4. The proven design emphasizes reliability and rability
ex8000 adopts the same design scheme as ex3600-5, using shovel track and swing bearing of three stick machine, as well as the proven and very rable system and components&# 61548;
5. The maintainability and ease of use are fully considered
in order to ensure the maintainability and ease of use, ex8000 has designed a large access door and a large open space, and a flat ground is reserved around the engine to facilitate maintenance and inspection operation. At the same time, an electronic telescopic ladder is installed to make the driver or maintenance personnel easily access the equipment
in addition to the working pressure of the hydraulic system, the digging force is also related to the stability of the whole machine. For example, the greater the mass of the whole machine, the greater the digging force.