Bucket wheel stacker reclaimer dustproof and lubrication of the gear ring

Bucket wheel stacker reclaimer dustproof and lubrication of the gear ring - 2020 10 - 24 GengLanSheng ( Datang international DouHe power plant) Abstract: analysis of the bucket wheel stacker reclaimer rotary difficult reason, took the slewing ring gear to dust prevention measures, improved the original slewing bearing lubrication method, after the implementation of flexible rotation, rotary oil motor pressure from 8 to 10 mpa now down to 3 ~ 5 mpa. Key words: dou turbine; Slewing ring gear; Dust skirt; Lubrication; Concentration of a gas station power armour ethylene-propylene coal yard each one bucket wheel stacker reclaimer installation ( Hereinafter referred to as the reclaimer's) , its DQ5030 type 2 sets, DQL12501250230 type 1. Because the outdoor conditions of coal and poor maintenance condition, make the gear wear serious, slewing mechanism was chocked up with pulverized coal, affect the rotation effect. A turbine wheel fights the cantilever unilateral turn back Angle by the original design of the 90 & deg; Down to 70, at the same time for rotary resistance increased, rotary motor oil pressure is too large, beyond the scope of technology, lower the oil motor life, a three year damage phenomenon. 1 countermeasures and implementation. 1 ring gear dustproof as shown in figure 1, dou turbine slewing gear ring part of walking, fixed on a walking skeleton. Engages with slewing ring gear rotating pinion belongs to the rotary body, is fixed on the rotary platform. When the slewing platform rotary around is through the drive pinion gear ring rolling. Because of their relative movement between a walking skeleton and slewing platform between, this space is bare, slewing ring gear and rotating pinion by dust pollution, lead to the result. Therefore, take the seal of the movement space countermeasures, specific implementation is as follows: under the slewing platform along the circumferential direction adding dust skirt shade, the ring gear and rotating pinion that dust skirt is about 100 mm, from tip to increase the dustproof effect, add culottes on walking skeleton platform ( As shown in figure 1 b) 。 Skirt flat iron curtain for arc welding in the rotary table below, in dress and skirt blinds on every D12mm 200 mm drill hole, make through bolt skirt shade curtain together, with skirt skirt shade to use old tape, mainly considering the belt has good elasticity, easy to deformation, the advantage good installation technology, and can use local materials, don't need any investment. Divided skirt with skirt flat iron curtain in phase of the arc welding on walking skeleton platform, culottes the outer diameter of the same as the skirt LianNa circle diameter, because dress shade is soft adhesive tape, can compensate for the eccentric error in turning process, in order to ensure to close contact between, improve the effect of dust. Note: when installing a dust components, consider the slewing platform turns not scratches with other objects, so as not to cause unsafe events. Before and after modification contrast is shown in figure 1 and figure 1 ( a) The dust pollution in the final before, in the ring gear and small gear is full of dust. Figure 1 ( b) The dust pollution in the final after the sketch, as a result of adding the dustproof device, dust can not intrusive to the ring gear and small gear. Figure 1 to transform dust pollution situation before and after contrast signal tutu 2 bearing before and after filling diagram 1. 2 improve bearing lubrication bearing lubrication is artificial lubricating oil and gas tools can be shipped to dou turbine slewing platform, refueling by one foot pump, another tubing operation, due to the limitation of refueling site space, staff operating inconvenience, clothes stained with pulverized coal and oil, affect the image of civilization production, caused the worker's psychological damage. Every time come on give stronger not only physically, but single span low pump efficiency and poor quality. In order to solve the above problem, we will dou turbine slewing bearing lubrication oil form instead of centralized lubrication. : where is spacious and convenient for operation staff to install the concentration of gas station, through tubing to various zerk oil supply, convenient and cheer the missing point, ensure the quality of the equipment maintenance, at the same time, the light also reduced the labor intensity of workers, improve the operation of civilization degree. Gas station work system diagram as shown in figure 2. The concentration of gas station, More dry oil pump) Is a new type of lubricating oil pump, has small volume, light weight, simple structure, convenient maintenance, long service life, etc. It is mainly composed of motor, reducer, pressure of oil components and storage cans and so on, its appearance structure and working principle as shown in figure 3. Figure 3 shape structure and working principle of the figure 9, outer ring is equipped with rolling bearings rolling bearing outer ring with a plate of 7, pressure pump plunger spherical end card in plate groove, so when the eccentric wheel rotation, revitalize the set in external rotation, thus will worm wheel rotation movement into the pump plunger in eccentric radial to the complex linear motion, oil pressure and oil absorption. Piston stroke is equal to twice the eccentricity, the quantity of oil is much available adjusted fixed nut on the pump body, main performance parameters are shown in table 1. Shown in the 3 c, when motor starts, 1 drive 2, 3, 4, 5, two levels of worm worm gear retarding mechanism, turns eccentric 8, due to the eccentric considering the piping installation has good manufacturability, lubricating oil pipe using D8mm copper tube, try not to appear on the piping arrangement and towards the 90 & deg; The turning point, lest cause oil poorly. This modification, the lubrication pump installed in the bottom of the reclaimer's walking skeleton, can directly in the ground operation, avoid don't go to the to the ring gear dispose of the trouble and inconvenience. 2 effect after the project implementation, to eliminate the dust pollution of the rotary motion pair parts, after more than two years running, not any abnormal phenomenon, bearing flexible rotation, rotary oil motor pressure by maintenance before 8 ~ 10 mpa down to now: light 3 ~ 4 mpa, overloading 3 ~ 5 mpa, the effect is very good, has solved the problem plaguing reclaimer's rotary for many years, the received praise from leaders and workers. Source: journal of north China electric power technology