A super excavator that looked very large was planted on the ground, and it seemed that the situation was empty, and the two tracks were sunk together.
Out of curiosity, we checked the model on the body of the excavator, this check is really amazing, this excavator is not small.
1 tonnage is super large
It looks like a normal mining excavator, but it actually weighs more than 700 tons and has a bucket capacity of 38 cubic meters.
In China, only XCMG's XE7000 mining excavator can barely reach this level.
2 Very early launch
This excavator was also launched quite early, compared to the launch of China's first 700-ton super-large mining hydraulic excavator in 2018, this excavator has been launched as early as 1986.
3 This model is the only one
After Demag introduced the excavator, the production line of this model was changed to the DEMAG H485 series, and the 685 model excavator was produced and put into production in the Canadian oil sands mine in 1994, and it has not changed jobs since.
Technically, the H685 SP is available in both diesel engines (two Cat or Komatsu SDA16V diesel engines) and electric drives, and is operated in conjunction with 240-ton trucks in oil sands mines in Canada.
主要技术参数(H685SP)：
Quality: 724t
Max power: 2784 kW (3774 hp)
Bucket capacity: 38m3
The purchase price of this excavator was 9,000,000 German marks, which was equivalent to 40 or 50 million yuan at that time, and 40 or 50 million yuan in 1986.
We saw that the excavator's bucket was also sharp, because it had been digging in the oil sands mines in Canada for overburden, hard clay, sandstone, which is all frozen permafrost.
But it's a pity that although Demag is so good and has reached the peak in that era, he still can't escape the commercial fight.
From 1996 to 1999, the Demag excavator business was acquired by Komatsu of Japan.
In 2011, Demag's crane business was acquired by Terex of the United States, and in a few years, it was acquired by Tadano of Japan.
After Komatsu acquired Demag, the H685 was renamed PC8000. This is the top model of Komatsu hydraulic excavator, the latest is PC8000-6, there are two forms of diesel engine drive and electric drive, respectively, two KOMATSU SDA16V160 (16-cylinder turbocharged) diesel engine or 6600V AC (motor power 2900kW) as power, fuel tank capacity of 13500 liters, track shoes specifications of 1500mm and 1900mm two widths, maximum travel speed of 2.4km/h, can match 240 short tons and larger trucks.
Then let's go back and look at the moment when the accident happened and fell headlong into the ground, since it has so much strength, and the accident doesn't seem to be serious, can it directly dig the bucket and support its big arm, and sit down on its own to return to normal?
Generally speaking, this level of excavator cannot be supported by itself, and can only wait for the crane to help, which is a bit expensive!