44results about How to "Meet mining needs" patented technology

The invention discloses a dragging part of a torque shunting thin coal layer mining machine. The dragging part comprises a dragging shell, a dragging motor, a dragging speed reduction box, a torque shunting gear transmission mechanism, a gap bridge, a traveling shell, a torque shunting gear transmission mechanism and a traveling wheel. When the dragging part of the torque shunting thin coal layer mining machine works, the output shaft of the traction motor transmits power to the dragging speed reduction box and then transmits the power to the traveling wheel through a multi-stage cylindrical gear and a planetary gear after being subjected to transmission speed reduction; the traveling wheel is meshed with a pin row arranged on an emptying side; and due to the rotation of the traveling wheel, the thin coal layer mining machine can travel. The dragging part is driven by the motor, can meet a requirement on underwell explosion prevention and is simple and compact in overall structure; through the arrangement of torque shunting gear transmission mechanism and gap bridge, the coal passing space is enlarged; a coal layer with the height of 0.65 to 1.3 meters can be mined; a demand for mining the underwell thin coal layer can be met; and the mining efficiency of the underwell thin coal layer and the coal resource production capacity can be improved.

The invention discloses a multi-point driving electric traction coal mining machine which comprises a left cutting part, an electric control cabinet and a right cutting part, wherein a left traction part is arranged between the left cutting part and the electric control cabinet; a right traction part is arranged between the right cutting part and the electric control cabinet; the left traction part comprises a first fixed box and a second fixed box; the right end of the second fixed box is connected with the electric control cabinet; the left end of the second fixed box is connected with the right end of the first fixed box; the bottom of the second fixed box is connected with a second travelling box; the left end of the first fixed box is connected with the left cutting part; the bottom of the first fixed box is connected with a first travelling box; the right traction part comprises a third fixed box; the left end of the third fixed box is connected with the electric control cabinet; the right end of the third fixed box is connected with the right cutting part; the bottom of the third fixed box is connected with a third travelling box; and the third fixed box and the first fixed box have the same structures and are arranged in a symmetrical way. The coal mining machine is driven by a plurality of points at the same time, meets the mining demands of a down-hole steeply inclined coal seam, and improves the mining efficiency of the down-hole steeply inclined coal seam.

The invention relates to a multi-blade saw mine quarrying machine comprising a track and a walking frame, wherein the walking frame walks along the track, the back part of the walking frame is provided with a hydraulic system and a pushing motor, the front part of the walking frame is provided with a working port in which a movable frame is placed, the movable frame is supported on the walking frame by a hydraulic ram, the back part of the movable frame is provided with a working motor, the front end of the movable frame is horizontally connected with a rotating shaft through a bearing brush,a pair of driven pulleys are symmetrically arranged on the rotating shaft, the driven pulleys are connected with driving pulleys of the working motor through pulley sleeves, and more than one disc saw blade is arranged on the rotating shaft at intervals. The quarrying machine has the advantages of compact structure, stability, safe use, integral moulding of mining, no need of secondary processing, low mining and processing cost and wide range of application, and can realize the synchronous mining of multi-channel stone and the control of the specifications of the stone through regulating the walking speed of the walking frame, the height of the movable frame and the distance among a plurality of disc saw blades.

The invention provides a heavy oil aquathermolysis catalytic viscosity reducer and a preparation method thereof. The heavy oil aquathermolysis catalytic viscosity reducer comprises o-phenylenediamine, dodecylbenzene sulfonic acid and a transition metal sulfate in a mass mole ratio of 1:0.5-1.5:0.5-1.5. The heavy oil aquathermolysis catalytic viscosity reducer is prepared by the steps of: dissolving dodecylbenzene sulfonic acid in water to obtain a dodecylbenzene sulfonic acid solution with a concentration of 0.5mol / L-1.2mol / L; at 70-110DEG C, adding o-phenylenediamine into the dodecylbenzene sulfonic acid solution to obtain an intermediate product; dissolving the transition metal sulfate in water to obtain a transition metal sulfate solution with a concentration of 0.5mol / L-0.9mol / L; and adding the transition metal sulfate solution into the intermediate product, carrying out reaction at 70DEG C-110DEG C for 2h-4h, and performing vacuum drying to obtain the heavy oil aquathermolysis catalytic viscosity reducer. The heavy oil aquathermolysis catalytic viscosity reducer provided by the invention has better temperature resistance, and can reach more excellent cracking viscosity reducing effect.

Disclosed is a deep-well high-stress coal rock stepped drum, comprising a rear cylinder hub (1), a front cylinder hub (2), a spiral blade (3), an end plate (4), nozzles (5) and pick-shaped cutters (6). The end plate (4) is arranged at the joint of the rear cylinder hub (1) and the front cylinder hub (2), the spiral blade (3) connected to the end plate (4) is arranged on the rear cylinder hub (1), a plurality of pick-shaped cutters (6) and nozzles (5) are distributed on the outer edge of the spiral blade (3) and the end plate (4) at intervals, and the pick-shaped cutters (6) in spiral arrangement are fixed on the front cylinder hub (2); and the end plate (4) is provided with an annular water delivery channel (4-5), and is provided with a nozzle water delivery channel (4-3), a wheel hub water delivery channel (4-4) and an end plate blade water delivery channel (4-6) which are in communication with the annular water delivery channel (4-5). With the drum, the mechanical mining problem of deep-well high-stress coal rock is solved, and deep-well high-stress coal rock cutting efficiency is increased in the case that explosion-proof motor power is not greatly increased. The structure uses an explosion-proof motor drive, such that underground explosion-proof requirements can be satisfied, and the shearer drum has a simple and compact structure.

The invention provides a centralized filling roadway layering stepping mining and filling "three under" mining method for an approximately horizontal superhigh seam, and relates to the mining method technology field. The approximately horizontal superhigh seam is first divided into multiple mining layers, and the centralized filling roadway layering stepping mining and filling "three under" miningmethod for the approximately horizontal superhigh seam specially includes steps: A, arranging a centralized filling roadway along a coal seam roof, arranging a transport gate road along a coal seam floor, and opening a cutting hole at a dip angle of 5-7 degrees on a boundary of a working face; B, by arranging a centralized filling inclined roadway, a filling chamber and the centralized filling roadway in communicating mode, forming a transport gate road-cutting hole-centralized filling inclined roadway-filling chamber-centralized filling roadway air return system; C, alternately arranging a plurality of branch roadways Z and a plurality of coal pillars M at the lowest mining layer along the cutting hole, completing mining of the branch roadways Z first, and filling the branch roadways Z;D, mining the coal pillars M after completing filling of the roadways Z, and filling the coal pillar areas, a transport roadway and the transport gate road; E, repeating the steps from A to D, and completing mining of all the mining layers. The centralized filling roadway layering stepping mining and filling "three under" mining method for the approximately horizontal superhigh seam achieves filling and mining of the approximately horizontal superhigh seam, and is safe and efficient.