The crawler mobile crushing station is composed of receiving system, feeding system, crushing system, power system, conveying system, walking system, hydraulic system, etc. Among them, the power system is the “heart” of the crawler mobile crushing station. This article shares 5 common driving methods.
- Direct drive plus hydraulic drive
The direct drive and hydraulic drive mode uses diesel engine as the power source, and two output terminals are separated through the transfer case.
Among them, the main output end is connected with a clutch or a hydraulic coupler to drive the crushing host; the other output end drives the hydraulic pump set to complete walking, feeding, conveying, auxiliary device folding and other actions.
This drive mode has a compact layout and high transmission efficiency, but it is more costly than electric drives. This is a larger restriction factor for the complete set of mobile crushing systems to configure this drive mode. - Direct drive plus electric drive
The direct drive and electric drive mode uses diesel engine as the power source, and three output terminals are separated through the transfer case. The main output terminal is connected to the clutch or hydraulic coupling to drive the crushing host; the other output terminal is connected to the pump set to drive the crawler to travel and other hydraulic actuators; the third output terminal drives the generator to complete feeding, conveying and other actions.
There are also more applications of direct drive plus electric drive, which is more convenient in terms of later maintenance. However, due to the large power of the walking system, the pump set has a large model, which leads to a lot of increase in production costs and higher requirements for the layout of the whole machine. In addition, because the diesel engine is used as the power source, the operating cost is also high. - Full hydraulic drive
The full hydraulic drive mode uses diesel engine as the power source, and provides pressure oil for the hydraulic system through a series pump set. The crushing host is driven by a single variable plunger pump, and other actuators are controlled by the rest of the pump group and valve group.
The transmission is more stable and can realize stepless speed change, more flexible and better controllability; configure the load-sensitive control system to realize the distribution of system flow output on demand, the control is more intelligent, the energy consumption is lower, and the safety is good.
The main constraints are the large torque when the crushing main engine starts and the high speed during normal operation, so it is mostly used in small mobile crushing station products. In addition, this kind of driving method has higher requirements on the performance of hydraulic parts, and many hydraulic parts need to be imported from abroad, so the use cost is higher. - Mains drive
The crawler-type mobile crushing station adopts the mains drive mode. Its walking system is driven by a diesel engine to drive a hydraulic pump set to drive a walking motor to complete the walking action, and all other actuators are driven by the mains.
The advantage of the mains drive method is the low cost of use. In addition, its structural layout space is larger, and the later maintenance is better. Semi-mobile crushing plants also use this drive mode.
The disadvantage is that the scope of use is small, and cables need to be configured in mining and construction waste treatment sites. - Diesel-electric drive
Diesel-electric drive mode uses city electricity or diesel generator set as the power source. In the actuator, the walking is driven by an electric motor and a hydraulic pump set, and other actuators are driven by an electric motor.
The crawler-type mobile crushing plant driven by diesel-electricity can be connected to the mains in large-scale projects to reduce the use cost, and diesel engines can be used in small-scale projects, which is flexible and convenient to use. The main restrictive factors are high manufacturing cost, complicated equipment structure, small structural space, and difficulty in later maintenance.
The above are several driving methods commonly used in crawler mobile stations. Each has its advantages. The specific configuration requires comprehensive consideration of various factors. Welcome to leave a message to communicate your problems.