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Tire selection should be considered the main factors and TKPH value

Distance,ghd haarglätter, different seasons and other factors, a reasonable allocation of different manufacturers, different types of tires, tire damage and do less work there is a certain claim to help. The calculated value is greater than the field TKPH tire manufacturer provides TKPH value, from the tire management point of view should be taken to reduce the speed required to reduce the loading capacity, reduce the number of cycles to reduce TKPH value, but the mining point of view, will have to pursue the largest output of, in the case of ability, be sure to do shift work may increase the maximum number of cycles, it is impossible to tire heat, deliberate speed limit MINING TECHNOLOGY 3l 3 2002, and the loading and cycle number. So in order to solve the problem of a small number of excessive tire TKPH value should be in the tire on the use and selection of appropriate adjustments, will be part of the far distance a truck loaded with higher tire TKPH, or flexible with cars, the distance taken a class with the way,ugg boots ireland, improved tire model, an increase heat resistance. About the author: Hu Group (1956 a), male, a 1981 graduate of the former Fuxin Mining Institute, senior engineer of mining, the current Party Secretary Pingshuo Coal Industry Corporation Vice President. (Received date: 2002 04 a Ol a) (Continued from page 27) to overcome the film's resistance to shaft rotation,ghd deutschland, so the friction factor is minimal. At this point the pressure of oil film on top of the gap is only part of the ring. Figure 2 , according to bearing theory, the minimum film thickness should be greater than two hndn flatness of the surface and the micro. That hnfin ≥ K (gl +2), where K - the safety factor, generally taken to K ≥ 2; Ding l , 2 - shaft diameter, bearing face flatness of average height. Locomotive, the shaft and the bearing oil film between the dynamic pressure, bearing almost no wear and tear, this time, the internal friction resistance, friction resistance is only oil, that is : D = T, where U - axle oil viscosity, Pa ・ s; - shaft angular velocity, rad / s; b - hold the width of bearing, m; d - axle diameter, m; 19 .. - The relative gap, =; T - friction factor. By the above formula, hold the inner bearing and shaft friction resistance, viscosity of the oil T u, axle speed,ghd styler, bearing width b and the shaft diameter d is proportional to the relative gap with the bearing is inversely proportional. D is the bearing friction resistance within the heat source, therefore, also hold the bearing temperature rise is inversely proportional to the size of the gap. 3 hold the bearing clearance bearing temperature rise is the power to determine the important performance indicator of the locomotive, locomotive operation should not exceed (50 +0.6 t) ℃, where t is the ambient temperature. Under the premise of the film formation, gap, is conducive to maintaining oil viscosity and lower bearing temperature. However, the bigger the better not hold the bearing clearance. Gap, bearing the rock volume, its carrying capacity will be 32 reduced. Therefore, the gap is too small, the film do not form, bearing easy to heat; gap is too large, the loss of carrying capacity, the film will also be destroyed, eventually would lead to temperature gauge. Ultimately, the final performance of the bearing holding trials to see results. Traction in normal tonnage, speed driving, hold the bearing temperature of not more than (50 +0.6 t) ℃ under the premise, select the appropriate bearing clearance. EL tram from the hold of a bush type 2 design perspective, the bore size 210:: mm,GHD glätteisen günstig, shaft diameter of ~ 210 - a Ou .. 43; mm, so the gap e = 0.58 ~ 0.75mm, in the round of the provisions of the motor assembly map \ from this, that the cooperation between the two conditions, the gap size determined by the fit tolerance. But the wheel of the motor assembly, and after turning, lifting, or no-load operation, the gap e value at the gap and because of the asbestos tile back cushion the impact of larger thickness, at this time in the bush of the lower part of the gap value is measured the integrated value of a number of factors, not the value of the original design. At the same time, due to the continuous improvement of technology, hold shaft diameter and tile surface quality improved significantly, the minimum film thickness hnfin smaller hydrodynamic lubricant film formation, the required radial clearance decreases. Practice has proved that deformation due to various factors, the test back to be measured after the gap under the tile has less than 0.5mm, but the temperature of qualified, good performance. It is suggested that: ① modified EL-2 locomotives bearing inner diameter 2lO a 'wmm, so that the gap 8 = 0.38 ~ 0.56mm. ② hekou Department of asbestos pad thickness from 1.5 - 2.0mm to 0.8mm, in order to reduce the gap at the back of tile. Author: Tian Guozhu (1965 a), male, Inner Mongolia Chifeng, engineers, graduated from Shanxi Mining Institute in 1988 mechanization professional. Current Western Open Jixiu Chang Pingmei Group Technical Director. (Received Date: 2002 -01-28)
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