Hydraulic gear wheel shaft fracture after the reset method of rotary kiln

Hydraulic gear wheel shaft fracture after the reset method of rotary kiln is 2019 - 04 - 23 guo-dong hu ( Qingzhou China united cement co. , LTD. ) Due to the weight of rotary kiln and the cause of the tilt Angle, the rotation after rotation, there is a down along the direction of the rotary kiln cylinder channeling move ( Downward) 。 Hydraulic gear wheel is used to control the kiln body of rotary kiln axial channeling in turns, the other parts of the equipment such as belting leather and roller can even wear on the surface of the same, ensure that the level of kiln body has good linearity, the gear mesh size is good, very good to reduce the consumption of power and equipment. With of large-scale rotary kiln equipment, hydraulic gear wheel system has become an increasingly important impact on stable operation of rotary kiln. Problems after catch wheel device, light person to slow down production of rotary kiln, the person that weigh kiln maintenance, and major equipment accident. Here is a hydraulic gear wheel shaft fracture after the rotary kiln is not out of the tug off before, as soon as possible to repair the reset method, rotary kiln structure as shown in figure 1. 1 hydraulic gear wheel shaft fracture cause analysis. One of the main causes of hydraulic gear wheel shaft fracture combined with the on-site inspection and comprehensive analysis of the shaft section, hydraulic gear wheel axle load ability for external load moment damage. During the hydraulic gear wheel as factory installed equipment, replacing the bearings several times, do not rule out out repeatedly disassembling and maintenance in the process of shaft is damaged, the foreign minister time variable load operation cause hydraulic gear wheel axle fatigue. Rotary kiln current uneven skin, high operation and kiln shell deformation, the working pressure of the hydraulic pressure station within the scope of the limit, but more frequent fluctuations, fatigue for the instability of transient breaking zone development. 1. 2 secondary causes of hydraulic gear wheel shaft fracture in hydraulic gear wheel shaft fractures with catch wheel axles axle shoulder, it is processing relief groove position, its position, appearance inspection is not easy to find defects. Hydraulic gear wheel above the actual usage in many cement is also in the process of enterprise production, the inevitable happens hydraulic gear wheel shaft fracture of equipment accident. After field condition 2 hydraulic gear wheel failure, can be found in time, timely stop kiln, rotary kiln belting leather ( Kiln head direction) Has out tug edge, namely, belting leather and tug when the interface is already reach the normal operation of contact area, big ring gear down scratches seal cover, serious even support deformation torn down. Lost hydraulic gear wheel support action, this time by adjusting the tug to rotary kiln up risk, under the thermal state for a long time stop kiln, kiln cylinder deformation is large, is likely to be caused by excessive deformation of cylinder. ( As shown in figure 2, figure 3) 3 reset method ( See figure 4) ( 1) Remove the damaged hydraulic gear wheel do shan, replace the standby hydraulic gear wheel. ( 2) Kiln cylinder when the whole down to remove the u-shaped shim backup with a catch wheel cannot be fixed in the bottom of the platform, the back-end base must be made at the end of the catch wheel support, will be round in order, keep in the same plane with platform, hydraulic gear wheel of the hydraulic cylinder back to the end of the guide bar lifting position. ( 3) Join good hydraulic gear wheel that hydraulic oil pipe, in the block at the bottom of the wheel at the bottom of the platform welding support equipped with hydraulic roof. ( 4) , when confirmed, after the completion of the above work would transmit the rotary kiln with auxiliary motor turns, the open hydraulic gear wheel hydraulic station, the pressure of the hydraulic pressure station with adjust according to the condition of rotary kiln upward initial pressure too high ( Control in 4. Below 0 mpa) , at the same time, hydraulic roof cooperate will push up of rotary kiln, after confirming the file on the tug of the rotary kiln process after no abnormalities, can increase the pressure of the hydraulic pressure station. ( 5) Measure the hydraulic gear wheel at the bottom of the guide bar position distance with hydraulic gear wheel platform anchor bolt fixed position distance comparison, in a timely manner will move up hydraulic gear wheel device, until it was fully hydraulic gear wheel device fixed on the catch wheel platform. ( 6) Catch wheel device completely fixed, continue to push on, until the normal operation of rotary kiln to position, good U mat iron, at the same time to complete the big gear ring seal cover restoration work. 4 conclusions in the hydraulic reset when the wheel shaft fracture after rotary kiln, the method of simple and practical operation process, at the same time can recover as fast as possible under the thermal state of rotary kiln slow turning, ensure the deformation under control of rotary kiln, does not cause other equipment problems and more accidents.