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Heavy-duty Apron Feeder220010000mmProduct InstructionShenyang Mining Machinery Import & Export CorporationContents1.usage and useful scope 2.technical character3.working principle and structure character4.installation, commissioning and test run5.operation rules and maintenance6.lubricating1、usage and useful scope Heavy apron feeder widely used in mine, metallurgy, building material and coal departments. The machine usually is located under material bin and hopper with certain bin pressure. It can short distance transport kinds of materials with large density to crushing and sifting and transportation equipment equally and it is especially suitable for be used under primary crushing. It is not only suitable for treating big particle size material, but also thin particle size material. It can finish heavy-duty job in the bad environment and have good applicability to material particle size changing, temperature, viscosity, ice frost and rain snow effect, and it feeding quantity is right and equal. Installation of the machine can be horizontal, and also sloping. Max. inclined angle to up transporting is 23。 2、technical character： Specification-2200X9944mm Width of chain plate-2200 mm The distance from sprocket shaft centerline to take up shaft centerline -9944 mm Feeding speed-0.010.067m/s Capacity-100650t/h Particle size-1.0x1.0x1.2m Adjustable distance of take up device-700 mm Inclined angle to up transporting-20 motor： Type-YP2280M-6 Power-55KW Revolution -980r/min reducer： Planet and orthogonal type Total speed ratio-6103、working principle and structure character The machine running come true by that motor drives sprocket shaft rotating through coupling and reducer, and at the same time the mesh between sprocket gear and pin shaft of chain makes chain plate moving along straight line. Chain plates are supported by thrust wheels and carry wheels installed on the frame, and adjusting take up device makes chain and sprocket mesh, thereby the machine finish the aim of transporting material to crusher. Heavy-duty apron feeder (see drawing 1) include drive unit1, chain plate device2, take up device3, main shaft device4, frame5, thrust wheel6, carry sprocket7, etc. and its main characters are as follows:3.1 drive unit (see drawing 2) include motor1, coupling2, orthogonal reducer3, planet reducer4, torque lever5, locked disc6, etc. the unit adopts orthogonal shaft fulcrum float type, the sleeve of main shaft is installed in output shaft of planet reducer, and connection between them is through locked disc. The structure character is low weight and big speed ratio. Because of adopting fulcrum float type, to reduce additional bend moment to shaft caused by installation error, and to increase using life of transmission and easy for dismounting. 3.2 chain plate device (drawing 3) include: pan plate1, chain element2, etc. pan plate adopts single arc join type and is made by low alloy steel plate. Its character is high strength, wearproof and no leakage. Chain element adopt tank chain and its character is small pitch error, calm running, high strength, and no lubricating. 3.3 take up device(drawing 4) is screw lever take up mechanism and it include: shaft1, two carry wheels2, rolling bearing3, bearing housing4, complex spring5, and take up screw6, etc. carry wheel is fixed on the shaft through sleeve, roller bearing and bearing housing are installed at the two ends of shaft and therein bearing housing is installed at two sides of frame. Take up device is used for straining chain and adjusting horizontal position of chain. Carry wheel act guiding and supporting chain plate. Complex spring act compact function. 3.4 main shaft device(see drawing 5) include: shaft1, bearing housing2, sprocket3, supporting wheel4, and bearing housing5, etc. the aim of transporting material is to come true by that two sprockets on shaft draw chain plate to run. The device character is easy dismounting and maintenance because the connection between sprocket and supporting wheel adopts expanding sleeve connection, and main shaft is installed in the output shaft in reducer.3.5 it is -shape structure made of steel plate, several reinforcement plates are welded between top and bottom alate plates. The two -shape main beams are welded together through channel steel and -shape steel, which structure is firm and calm.3.7 thrust wheel（drawing 7）include: pedestal(1), rolling bearing(2), shaft(3), roller(4), press cover(5), seal ring(6) etc. it is used for supporting chain to prevent chain plate from forming large flexivity caused by load and self-weight. And it can make chain normal running and undertaking some material impact and pressure from bin, and at the same time it can prevent chain form offset.3.8 carry sprocket：（drawing 8）it include: pedestal(1), shaft(2) shim(3), rolling bearing(4), support wheel(5) end cover(6), cover(7) etc. it is used for supporting chain plate to prevent chain plate from forming too large flexivity to effect normal running.4. Installation, commissioning and test run Before installation, components should be cleaned necessarily, and installation tools should be prepared well.4.1 installation of the frame: The frame usually is mounted the base under bin or and hopper, and it is jointed through pre-embedded bolt. If no bolt, there should be pre-embedded steel plate on the base. The frame would be welded on the pre-embedded steel plate, if height need to be adjusted, shim can be used, but shim must be welded on the pre-embedded steel plate.4.2 Sprocket shaft device and take up device are hanged on the frame, after installing connection bolts, adjust bearing housing to make the verticality and levelness between sprocket shaft line and frame centerline not more than 1/1000 of its bearing span. When take up device is mounted, be sure that the parallelism between take up shaft centerline and horizontal plane is not more than 0.5/1000 of its bearing span. On the base of two shaft lines, the difference of two diagonals should be not more than 1/1000.through adjusting reach requirements later, sprocket device and take up device would be fixed on the frame. when installing thrust wheel, parallelism of shaft centerline of thrust wheel on lengthways and cross direction cannot exceed 1, and it can be adjusted by adding pad.4.3 motor and reducer would be mounted on the main shaft, and would be tightened by locked disc, and each bolt tightening moment of locked disc is 470N.M.4.4 Adjust screw of take up device to make it on the position of min. travelling point. Make chain plate device level higher by putting steel plate or channel steel under frame till side plate of chain plate is accordance with carry sprocket in height. Raise an end of chain plate to let chain plate slide from the end to other. After moving for a certain distance, the other end chain plate is jointed. The chain movable joint as same as others adopt pin shaft connection, but combining clearance between pin shaft of movable joint and chain element is looser than others. To knock by hand hammer can make pin shaft of movable joint installed into chain element, and make marks on movable joint easy for repairing and for dismounting. After the second section of chain plate is installed, by above method, lift chain continuously till two ends outer chain plate length is same, then lift two-end chain plate through steel wire rope to finish chain plate butt.4.5 adjust screw in take up device and tension chain plate to make it in good state. Again check if installation is right and connection bolts are tightened well and in that reducer and lubricated section is filled with lubricant oil, and check if junction for motor and electric device is right. After all are checked, can start machine and run for 2 hours without load.4.6 no-load test run should reach the following requirements：4.6.1 running is normal, and rotary components turn freely and no blocking and no knocking.4.6.2 sealed position in lubricating components is no leakage.4.6.3 no loosing to tensioning parts, especially connection bolt between chain plate and chain element never loose. 4.6.4 top and bottom rollers should turn freely and two arc join section of chain plate should be not less than 10mm.4.6.5 rising temperature cannot exceed 30 and max. temperature of bearing can not exceed 60.4.7 after no load test run is up to standard, test run with load is required before putting into production. Time of test run can be decided according to actual condition but continuous test run cannot be less than 2 hours. Load should be added till max. and check it according to stipulated data in drawing, after certificate the machine can be used.5.operation rules and maintenance5.1 all the time keep certain thickness material on chain plate during the machine is running, material thickness can not be less than 500mm, and it is not permitted that material is put into chain plate directly on the discharging empty state. If no avoidance on chain plate should be paved a layer of broken material before discharging to prevent from direct impacting chain plate. When big block of material stop up, it is not permitted to adopt demolishing.5.2 after the machine is installed, the distance from outlet to chain plate should be not less than 1.5-2 times of biggest material. Should keep 8-13mm clearance between protection plates and baffles on the two sides of chain plate to avoid material outflow and friction. The distance from bottom edge of protection plate to surface of chain plate should keep 5-10mm.should keep 350-500mm clearance from shaft centerline of take up device to back wall of bin for easy maintenance and dismounting.5.3 when chain pitch fray exceed 7mm, should change new chain.5.4when knock down expanding sleeve, firstly loosing all the screws but no taking off all the screws, only taking off galvanized screw and washer, again knocking head section to make sleeve loosing, then taking off screw and sleeve is disassembled.5.5 when installing expanding sleeve, should clean primary installation surface and paint a layer grease, then tighten screw by moment spanner.5.6 when installing rolling bearing of main shaft device, should be sure that the min. diameter direction clearance is about 0.08mm, and that reducing of diameter direction clearance should be between 0.09-0.11. The min. clearance to rolling bearing of take up device should reach about 0.55, and that reducing of diameter direction clearance should be between 0.06-0.07.5.7 when changing chain plate, the bolts used for connecting chain plate and chain should be painted anaerobic glue to prevent loosing, and each bolt tightening moment is 750-900N.M.5.8 operator should master the structure principle of machine, and before operation every time should check if all the components are normal and bolts for chain plate are loose. After all are checked, the machine can be started.5.9 right lubricating bearing and reducer and changing new grease timely.5.10often check chain plate working state, should keep chain good loosing. If founding offset, adjust it by take up device.5.11if there appear abnormal noise or fault, the machine should be stopped at once. In time find out reason and get rid of fault.5.12timely check and repair the machine, and in time change wearing components. 6.lubricating 6.1 lubricating points include reducer, sprocket shaft, thrust wheel and take up device.6.2the lubricant for bearing adopt ZG-4 Ca-radical lubricant grease(GB491-65), for reducer had better adopt S-P90# industry gear oil(apply to dry environment) or S-P90# industry gear oil(apply to wet environment).
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