Online repair coal crusher shaft wear and tear

Online repair coal crusher shaft wear is 2019 - 12 - 19 a, equipment introduction coal pulverizer is a kind of impact crusher rotor with a broken ring, broken ring sling on the hung with rotor rotating shaft, broken ring with the rotor rotating impact movement, but also around the suspended spin axis movement; Crushing process is done through broken ring of two pieces of work. After the material into the crushing chamber, in the first period of rotation of broken ring impact crushing. Falls in the second paragraph, the early broken particles on the sieve plate, the broken ring squeeze further broken, at the same time through the mesh. A small amount of materials can't be broken into the waste room, then cleared from waste room on a regular basis. Coal crusher is mainly used in the coal-fired power plant, the main type of crusher are jaw crusher, hammer crusher, etc. Some companies, two coal crusher fault phenomena ( Hydraulic coupler inner hole and corresponding trunnion abrasion, keyway damage) 1) Equipment parameters of the motor power: 990 kw speed: 700 RPM material: carbon steel bearing a size: 160 mm diameter width 260 mm wear: axis wear 2 mm or so, eccentric wear phenomenon, the wear of the diameter of axle 1/2 size, diameter of axle on the keyway rolling key ( Hole on the keyway not wear) ； Hydraulic coupler inner hole wear 0. 5mm。 2) Problem analysis, because of the bad working conditions of the coal pulverizer is relatively in the process of running under torque or vibration is larger, often caused by driving system fault, the common bearing housing and bearing wear, spindle head, keyways wear, pulley, and hydraulic coupler bore wear and so on. At the same time due to the production of dust on site is serious, and the bad lubrication condition, wear also exacerbate transmission parts. 3) Solve the repair welding technology of traditional machining method is easy to cause material damage, deformation or fracture cause parts, has great limitations; Brush plating and spraying to machining methods often need to outsourcing, not only repair cycle is long, high cost, difficult to tear open outfit; With modern production enterprise production degree of automation, continuous improve, more and more is also high to the requirement of equipment running smoothly, without advanced repair method, the above equipment problem, cannot be solved quickly and efficiently in the first place, will seriously affect the safety of enterprise continuous production. Use of polymer composite materials repair methods to repair, it is also a rise in domestic in recent years a new maintenance mode. The principle such as 2211 f metal repair material is formed using polymer composite materials to penetrate the intermolecular forces and repair parts form excellent adhesion, material has excellent physical properties can meet the equipment in operation under various complex requirements. Through the field can be rapid construction of wear trunnion to realize online repair, improve the service life of the equipment. Polymer composite materials and application technology can make the enterprise field repair quickly and efficiently in the first place, effectively avoid the equipment downtime for a long time, production and the benefits of losses; Effective avoid shipping costs, hoisting, such as comprehensive cost, ensure the construction personnel safety. Belongs to cold welding technology using polymer composite materials to repair, there is no thermal stress. Repair the rear axle surface and bearing contact close to one hundred percent, better able to bearing equipment run time of the reaction. Third, polymer repair of 1, repairing shaft keyway ( Hydraulic coupler inner hole keyway not wear) And then according to the keyway size mixture non-standard key; 2, in welding trunnion position of strong point, according to the height of good datum to repair point; 3, surface grinding, baking oil processing. Remove the oxide layer, show nature of metal, clean with anhydrous ethanol surface; 4, according to the strict proportion mixed materials, mixed evenly without color difference; 5, daub materials, thickness of slightly higher than the size of the anchor point; 6, install hydraulic coupler, ensure excess material being squeezed out; 7, material solidify rear other components can be installed. Four, the application of image information ( F the blue)