Bottom structure of the mining machine, loader, and scraper
With this bottom structure, the ore that is collected is dropped from the bottom of the ore block, and is slid into the end of the mine roadway through the gully or flat bottom discharge port, using a loader, a loader or a scraper. Mining. The large ore is crushed twice in the loading roadway. (1) The required distance between the loading and unloading lanes is 6 to 8 meters; the length of the loading and crossing tunnel is 6 to 10 meters. The cross section of the loading section is 2.2 × 2.2 m 2 . (2) The type of loader used in China is ECE-26. (3) The disadvantages of this bottom structure are: 1 Since the loader is a rail-mounted device, it must travel on a fixed track, which limits the loading width, which is not conducive to the recovery of ore, and requires work-assisted cleaning and maintenance of the track. 2 Loading and transportation interfere with each other, affecting the efficiency of mining. (1) Structure size: 1 The width of the loading roadway is 3 to 5 meters; 2 The length of the loading roadway is 8-10 meters; 3 The height of the loading roadway is 3 to 3.2 meters; 4 The radius of curvature of the curved section of the loading roadway is R=10 m; 5 Cut a mine shaft at regular intervals. The distance from the discharge port to the chute is about 50 meters. Because the average distance exceeds 50 meters, the efficiency is reduced. (2) Model of the domestically used shipper 1 Domestic ZYQ-14 type (dissolved 0.3m 3 , box capacity 1.8 m 3 ) ZYQ-12 type 2 Import T4G.T2G. (3) Features: 1 It is a bottom structure of ore-free equipment loading. The loading is more flexible than the loader, and it is not restricted too much. It can be loaded on the full width of the loading roadway. 2 Because the ore discharge port is large, it is not easy to block. (4) The main disadvantages are: 1 It is used in the equipment that is powered by gas, and the consumption of gas is large. The cost is high; 2 the tail of the equipment is dragged with a long wind rope for work, one is inconvenient, and the other is limited by the length of the rope, so the transport distance is limited. 3 increased the amount of extra-pulse mining work. (1) Features: 1 The section of the ore roadway is required to be mined by a ship. 2 The scraper burns diesel oil and has no wind rope at the tail. It is easy to walk, flexible in operation and unlimited in transportation distance. 3 The scraper itself does not have a car, but the front end is equipped with a bucket. The volume is large. After the ore is shoveled, it is poured directly into the chute and does not need to be loaded into the mine car. 4 The effective transportation distance is large, the walking speed is fast, and the ability to climb is relatively large. (2) Advantages: 1 This type of bottom structure can be used with high efficiency mining equipment. 2 This bottom structure greatly simplifies the bottom structure; 3 Increased mining efficiency due to the large number of mine outlets; 4 Due to the large discharge port, the leakage of the leak is reduced; 5 The bottom column has less ore, which improves the ore recovery rate. (3) Features: 1 Due to the use of diesel fuel, it pollutes the air and affects workers' health. 2 Increased equipment maintenance costs and increased the amount of extra-pulse mining engineering. Api 602 Gate Valve is samll forging shut off valve which widely used in all type system of thermal power plant. API 602 Gate Valve with solid wedge, bolt bonnet or welding bonnet type as well as full port or reduce port. Valve size from 1/2"(PN15) to 2"(PN50) matching pressure class 150(PN16) to class 2500(PN420). Valve connection can be NPT, BW, SW, RF. API 602 Gate Valve Api 602 Gate Valve,Alloy Steel Gate Valve,Api602 Gate Valve,Slab Gate Valve Yongjia South Trading Co.,Ltd , https://www.n-lvalve.com
(2) The bottom structure of the mine using the loader 
(3) The bottom structure of the mining machine using the mining machine
(4) The bottom structure of the scraper mining