Does the lock of the social security card of ABC go to the bank

1. The following factors are very important: better mechanical performance, reliability and rability, shorter payback period, and it is necessary to improve comfort and safety. In addition, good after-sales service can rece the downtime of users and improve economic benefits. Of course, the supply of accessories and the price are important factors that must be considered when purchasing equipment
project scale
crawler hydraulic excavator is generally selected for the occasions with the largest operation condition and mobility engineering and poor operation condition. The hydraulic excavator with narrow crawler and heavy ty should be used when the ground has strong bearing capacity, uneven, many pits or hard large ore; On the contrary, if the ground bearing capacity is weak and the soil is loose, the wide-band lengthened excavator should be selected
for the application of large-scale earthwork and medium and large-scale open-pit mine, the design institute or relevant experts shall analyze, compare and scientifically calculate the total investment and supporting equipment to determine the specification, model and quantity of hydraulic excavators to be purchased. General periodic small and medium-sized projects, such as road maintenance, irrigation and water conservancy, only need ordinary excavator, such as the widely used 20-25t excavator can fully meet the requirements
the hydraulic excavator with tire type should be used when the work quantity is small, the working condition is good and the working face needs to be changed frequently; The backhoe and long arm working device can be selected when cleaning and dredging the riverbed or channel; At the same time, a variety of working devices can be ordered so that they can be replaced at any time according to the construction needs, such as front shovel, backhoe, grab, hydraulic hammer, drilling rig and other working devices for selection
matching with the existing equipment should be considered when purchasing excavators, including the matching between the operation efficiency of excavators and the operation efficiency of existing equipment. For example, although the price of small excavators is low, they do not match with large mpers, which is equivalent to "small horse pulling cart", and "big horse pulling cart" does not match. In the construction practice, there is an empirical formula accepted by many construction managers, that is, the best cooperation between hydraulic excavator and mp truck is to fill 5-7 buckets of mp truck every time
current fund situation
now users are aware of the benefits of purchasing excavators. If they can receive the project, they can recover the cost quickly, but it is instant. We can consider various purchase methods, installment payment, bank mortgage, lease purchase and other schemes according to the capital situation. If there is no problem with funds, we can consider optimizing our equipment structure and purchasing excavators of international famous brands, so as to enhance our competitiveness in contracting large-scale projects
working conditions and construction fluidity
working engineering and construction fluidity directly affect the selection of excavator walking structure and working device
precautions for selection of walking parts
the walking parts of excavators are generally divided into three categories according to the walking mode: crawler type, tire type and floating boat type
Crawler excavators are widely used, which are characterized by high traction, ground pressure (generally 0.04-0.15mpa), good stability, good off-road performance and climbing performance. It is widely used in the situation of poor working conditions. According to the rapid development of working conditions, the standard crawler excavator is generally selected; If the load-bearing capacity of the ground is strong and the ground is uneven, the narrow crawler type excavator should be selected; If the bearing capacity of the ground station is poor and the soil is loose, the excavator with longer track and wider track shoe should be selected; If it is constructed in swamp, special crawler excavator for swamp should be selected. But please note that the longer the track is, the wider the track shoes are. If the track shoe is too long or too wide, it will wear quickly, and the supporting wheel, guide wheel and driving wheel will be damaged prematurely e to frequent external impact; Similarly, if the track is too short and the track shoe is too narrow, the machine will be damaged prematurely under unsuitable working conditions
the use of tire excavator and floating boat excavator is relatively less. The characteristics of tire excavator are high transmission efficiency, fast walking speed, good mobility and good mobility. It is generally used in good working conditions and the workplace needs to be transferred frequently. Floating boat excavators are generally used to clean up silt deposits in river beds, rivers and lakes

how to choose high-quality excavator for construction users
precautions for selection of working device part
generally, the working device part of excavator includes boom, stick, bucket and relevant oil cylinder and hydraulic pipeline. Because it is convenient to replace the working device of excavator, the corresponding working device can be replaced according to different working conditions to meet the needs of various working conditions
for example, the whole working device can be lengthened (the boom and stick are lengthened, and the bucket capacity is reced). In this way, the excavation scope of the excavator is increased, and it is especially suitable for dredging of general rivers; Desilting only needs to be done from the beaches on both sides of the river. In order to deal with the bad working conditions and ensure the smooth completion of the project, the mining rock excavator with high working intensity needs to be equipped with thickened boom stick
as far as the bucket is concerned, according to the different excavation conditions, the standard bucket for general working conditions, the enlarged bucket for soft earth, the rock bucket for rock working conditions and the desilting bucket for desilting can also be selected respectively. In addition, the bucket part can also be replaced by a crusher, which can be fully used in the crushing of large rocks. Compared with gunpowder blasting, the small workload crushing is much safer, the operation is convenient and the efficiency is higher. The bucket can also be replaced by grab fork and grab bucket, which can be fully used in the treatment of some waste goods; It is a good investment direction for the units or indivials who are engaged in municipal engineering to replace it with hydraulic shear, which is fully used in the demolition of buildings and other buildings. There are many other things that can be installed (such as: scarifier, pounder, cutting edge, pile driver, etc.). In the construction site under special conditions, it is necessary to consider whether to install oil cylinder protective cover to prevent falling objects from damaging or obstacles from damaging the oil cylinder; Sometimes, the machine working in the ship or flood port needs to be equipped with hook device to facilitate the lifting of vehicles.

3. Of course it's Carter. If you're in charge of oil, Komatsu... Carter costs a lot of oil. 25 oil, Komatsu saves 19 oil! I drive Shengang. It's not recommended to be too slow! 215421709 I often do iron ore, do not understand ask me

4. After sales is the key. It's not buying food. I'll buy it tomorrow after this meal. Choosing a big brand is the key

Carter, Volvo,
all aspects are very good, but the price of the machine is high, the fuel consumption is large, the after-sales service is too poor, too slow, and the parts are quite expensive, so it's not cost-effective

5. A group of swindlers and cheated people will not be reconciled

6. In the proction process of open-pit mining, it mainly includes four proction processes. In short, it's blasting. The ore and rock on the bench are loosened and broken by blasting or mechanical methods, so as to be suitable for the excavation of mining equipment
2. It is the core of open-pit mining to load the loose ore and rock on the bench into transportation equipment with excavation equipment< (3) transportation. That is to say, the ore is transported to the dressing yard and storage pile by transportation equipment, and the waste rock is transported to the mp< (4) discharge. Ore unloading and rock abandonment
generally speaking, open-pit mining includes four main links: drilling, mining, transportation and drainage. They are perforation blasting, mining, transportation and mping. Sometimes, drainage is necessary, and environmental treatment should be considered after mining. There are no special regulations on what equipment is needed to complete these processes, but the current common ones are down the hole drill, cone drill, various explosives (mixed loading vehicles, etc.), electric shovel, hydraulic excavator, bucket shovel, truck, bulldozer, grader, etc. if new technologies and new processes are adopted, they are encouraged by the state, but they must be audited.