The basic price is determined according to the use time of the excavator. In our country, the life of the excavator is generally designed to be 10 years (generally, because of the introduction of the new product, the use of the 10 year old machine is very low even if it is available). The average annual use time is about 2000 hours. In normal use, the engine repair cycle is 10000~15000 hours, the life of the hydraulic pump is often more than 20000 hours, and the other parts such as hydraulic motor, gear box, main control valve and other components are longer life. That is to say, for new excavators, no major repairs are not needed within 5 years without accident. .
According to the current commonly used equipment depreciation standard, excavator depreciation according to the first year 20%, after the annual decline of 5% to calculate the basic price, that is, the first year of depreciation 20%, second year depreciation 15%, third year depreciation 10%, fourth depreciation 5%. Fifth years later, the excavator must be refurbished by a series of refurbishment due to the aging of some parts, normal wear and some unexpected reasons. This makes the excavator's depreciation rate stable around 5% or lower, thus reducing the price. With the upgrading of technology and the aging of machinery itself, the price of excavators has dropped to below 20% of the total price in 10 years.
That is to say, for imported brands of excavators, the first three years of depreciation fee is about 45%, a million machines, three years is about 550,000. With ten years of machine, it's just below 200 thousand.
There are two ways to calculate the depreciation rate of excavators, one is straight line method and the other is curve method. (Note: the following two methods of calculation are general methods abroad, not applicable in China).
The so-called straight line method, usually used in a longer life of the excavator, for example, the new machine purchase price of 1 million 400 thousand of a type of excavator, after 6 years (11 thousand hours) use, the residual value is 15\% is 210 thousand, then average down, the rate of depreciation is equivalent to 108.19 yuan per hour, so the calculation is based on the following straight. Line calculation method:
And the curve method, generally used for shorter life of the excavator, for example, the same is the purchase price of 1 million 400 thousand of a type of excavator, after 6 years (11 thousand hours) use, the residual calculation method is as follows:
When the basic price of the equipment is determined, according to the specific situation of the second-hand equipment you see, the corresponding adjustment price is also needed to determine. Take the excavator as an example, the adjustment price should be the following items.
The engine is easy to start, no exhaust, normal exhaust, low, medium and high speed.
There is no leakage of oil and oil; no high temperature and no abnormal appearance.
The appearance of the rotary system has no abnormal appearance, and the bearing clearance is small.
Lift the arm to lift the bucket away from the ground and push the arm with the hand, and its left and right swing is small.
The working device is big, and the arm shovel is not abnormal, cracked, variant, and processed two times.
- four parts of the walking part are normal wear and tear; no cracking; no deformation of the track plate.
- the use of engines for used excavators is the focus of investigation.
- the hydraulic system of used excavators is also the focus of investigation.
- the electrical apparatus and other electrical apparatus are fully functional. There is no oil leakage and leakage of oil tank and radiator.
- the cab is complete and non - variant. The cover, cover, guard plate and frame are not dehiscence and cracking. When the above inspection results are normal, the equipment adjustment price is zero. For the problematic part, the adjustment price should be the cost price needed to restore the normal function of the part.
Hydraulic part:
The oil cylinder has normal appearance, no oil leakage and no self falling.
The piston rod is not pulled, stripped and bent.
The rotary motor is easy to start when it is rotating, with little stopping and drifting, no abnormal noise in the slewing, and no oil leakage. When the motor is at the same engine speed, the speed of the two sides of the track is the same, the walking is strong and no snakes, the high and low speed change is obvious, there is no abnormal sound, the ordinary land is easy to adjust its head and no oil leakage. The hydraulic pump has no oil leakage, no abnormal noise and normal walking conditions.
If the general, large, or partial parts of the used machinery have been changed, the user can make the corresponding increase or decrease of the price according to the degree of approval of the change. In the specific implementation process, different users and regions have different likes and dislikes of the model, which will also have a certain impact on the price assessment. In a word, it is a difficult thing to evaluate the price of the used engineering machinery. For the same equipment, different people will give different prices, and sometimes the price is even as high as 10%. For users, it may not be possible to assess a device, so it is necessary for a private user to ask an insider who is familiar with the mechanical performance as a guide, to inspect the equipment and to put forward constructive opinions. Second hand equipment users want to do the equipment purchase to achieve "buy rest assured, comfortable to use", it is necessary to pay attention to the inspection of equipment details, so that the value of second-hand equipment.
