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Fighting. The buckets are divided into box type and raft type. The former is suitable for soft fine ore, and the latter is used for hard block ore. The box type bucket has a knife type and a knife type, and the south type bucket is generally a knife type. The teeth of the bucket are fixed and disassembled, and the latter is easy to replace after wear. The structure, shape and weight of the bucket should be selected according to the nature of the ore to ensure that the bucket can fully fill the ore and not spill during operation.
The angle between the lower straight line segment of the bucket foot and the angle formed by the transport surface is generally selected from the range of 50° to 60° . The weight ratio of the weight of the bucket to the weight of the bucket should be in the range of 0.3 to 0.6 . When the ore mass is large, the large value is taken, and the smallness of the block is small.
The bucket volume is generally 0.1~1.4m3 , the bucket capacity is matched with the winch power, and the commonly used bucket volume is 0.15~0.3m3 .
Steel rope. The steel wire for electric picks requires good elasticity, wear resistance and high breaking strength. Steel rope is easy to wear due to contact with ore and shovel in motion, and its service life is generally 240~300h . In order to reduce the wear of the tail rope, the steel rope can be lifted by a pulley to reduce the friction with the ore and the surface.
The diameter of the steel rope should match the power of the winch, which is usually 6~16mm .
pulley. The pulley is mainly used to change the direction of the rope movement. The pulleys for antimony mines are required to be light and sturdy, without the steel cord, and the joints can pass. The diameter of the pulley should generally be 15 to 20 times the diameter of the steel rope . Commonly used pulleys are 150~200mm in diameter .
Throwing a rope gun. In the case of the empty field height of the empty field to the empty field method of the inclined ore body, in order to ensure the safety of the mining personnel, the work of pulling the steel rope is not carried out under the empty space with a large roof height. Rope gun. It uses the power of gunpowder explosion or gas explosion to launch a rope with a nylon rope on the launching pipe head, launch it to a predetermined target, and then use a nylon rope to pull the steel rope, so that people can enter the gob to complete the change. For the purpose of connecting the steel rope, the use of a rope throwing gun improves the safety of the worker's operation. The hemp rope for the traction rope can be set as an endless rope for reciprocating use.
Hubei Jingxiang phosphate ore mine PBM Wangji, deep power rake out room and pillar mining in gently inclined, a multi-tool electrician Hunan Hunan state machine manufacturing plant Xiang SD-6 type rope gun for emitting transducer Used to pick up the rope. With a bullet of 0.6g gunpowder , the actual range is 55.2~58.8m . In the stage mine house method of Lianyungang City, Xinpu Phosphorus, in the case of recovering the above-mentioned pillars above the floor of the roadway in the open space, the above-mentioned rope gun is used to change the steel rope with a range of about 30m .
In order to overcome the shortcomings of the use of fireworks, the Changsha Mine Research Institute developed the F-620 pneumatic rope thrower, which uses compressed air as the power. After the industrial test used in the stope, it has passed the national technical appraisal, the rope thrower The main technical parameters are shown in the table.
The main equipment for electric transport includes: winches, buckets, steel ropes (single and tail ropes) and pulleys. winch. Electric winch winch can be divided into double reel winch and three reel winch according to the number of reels. At present, the double reel winch is widely used. According to the power, it can be divided into pneumatic and electric winch. The commonly used electric winch. The motor power of the winch for loading and unloading is generally 14~55kw, and the commonly used is 15kw and 30kw .