Crushing is the key link in the process of mining. With self-moving crushing station in semi-continuous open pit mining. The continuous application of the self-moving crushing station in our country is also increasing. At present, most large self-moving crushing stations.
Dependent on imports, and expensive, in order to change this situation, engineers and technicians need to increase research and design All kinds of structural supporting equipment of mobile crushing station, strive to realize localization as soon as possible. At present, the domestic lack of apron feeder for sale corresponding design specifications and standards, lack of phase
Experience in structural design is required. The apron feeder frame mainly carries the weight of materials, receiving hopper, fence plate and its own structure.
The load and the scraper conveyor share a frame and are connected with the main steel structure of the crushing station. In the course of work, The structural stiffness and strength of the self-moving crushing station are directly affected by the impact load generated by the unloading of the shovel It works. Therefore, the research and analysis of apron feeder rack structure is very necessary.
In this paper, the 3200t/h self-moving crushing station project of "Pingshuo Anjialing open-pit coal mining and transportation system of 9# coal" is taken as the project Rely on. The basic structure of the heavy-duty apron feede frame supporting the self-moving crushing station was studied, and the structural characteristics of the frame were studied. And the mechanical characteristics, design a reasonable frame structure. Then build the apron feeder rack in Solid Works software The method of data import into ANSYS software is studied and established Metamodel. Again according to the actual work of apron feeder, as far as possible to restore the apron feeder work received
The calculation and application method of load are studied. Analysis of three operating conditions apron feeder load combination, respectively The strength finite element analysis of the frame structure under three working conditions is done. According to the strength analysis results, the frame structure was improved and measured again Calculate the strength and stiffness under various working conditions. Finally, the stress ratio method is used to check the fatigue strength of the frame and the dangerous cross section of the frame Fatigue strength analysis was carried out.
Through the analysis and calculation of the 3200t/h self-moving crushing station apron feeder for sale, this paper provides a certain theoretical basis for the independent development and design of the self-moving crushing station, and provides a reliable analysis and calculation of the apron feeder rack structure It provides reasonable and effective theory and practical experience for future design and development.The self-moving crushing station itself has a walking device, which does not need to be installed and fixed, eliminating the construction of infrastructure, and can move flexibly without traction equipment when moving. According to the different walking devices of the self-moving crushing station, it can be divided into crawler type, tyre type and hydraulic stepping type walking mechanism [9]. The wheeled walking mechanism is suitable for ground walking with uneven ground and slope ≤1:10, and the moving speed is faster, which can reach 700-1000m/h; The stepping type can be used for soft pavement, convenient and flexible action, relatively low cost, but the walking speed is as low as 0.7-1.5m/min, only suitable for small and medium-sized equipment; Crawler walking mechanism has strong structure, small ground pressure, suitable for all kinds of uneven road surface, slope ≤1:10 ground walking, walking speed can reach 3-8m/min [10]. The self-moving crushing station is fed directly by the electric shovel, does not require automobile transportation to feed it, and can follow the electric shovel to walk forward, which improves the efficiency of the loading equipment, and saves a lot of transportation and relocation costs, so that the mining cost is greatly reduced. The self-moving crushing station has the characteristics of "high operating efficiency, low operating cost, low carbon mining and environmental protection, and long service life" [11]. Therefore, in the open-pit semi-continuous mining, the self-moving crushing station will have a great space for development.
The self-moving crushing station is mainly composed of walking device, main steel structure and rotating device, receiving hopper, apron feeder for sale and cleaning material scraper conveyor, crusher, rotary discharge belt conveyor and electrical equipment and other parts. Center plate The feeder is the main part of the self-moving crushing station, and it is the frontier equipment of the whole open-pit semi-continuous mining system. plate The feeder frame mainly carries the load of the weight of the material, the receiving hopper, the apron plate and the apron feeder's own structure, and the apron feeder The scraper conveyor shares a frame and is connected with the main steel structure of the crushing station. When working, bear its own load At the same time, it continues to bear the impact load from the discharge of the shovel. apron feeder rack in a variety of operating conditions The force situation is different, and the loading situation of the load combination will also change, and the force situation and its own structure are more complex.
Its structural strength and stability have a very critical role in the normal operation of the equipment. To avoid damage and loss
In the process of structural design, it is very necessary to carry out finite element analysis of the apron feeder for sale frame structure, check the strength and stiffness of its structure, and carry out fatigue analysis of the dangerous section.
